Travel Tips

The travel hack giving travellers two holidays in one

When it comes to a long-haul flight, a stopover can be exactly what you need to stretch your legs and recharge before the next leg of your journey. But some eager travellers are getting even more out of their stopovers, by booking a few nights in their stopover destination and effectively getting two holidays in one. The “two-for-one holiday” trend is especially popular for those travelling from Australia and New Zealand, as it takes many, many hours to travel from Oceania to Europe, the US, or basically anywhere else in the world. Rather than looking at layovers as a hassle that just prolongs your journey, data shows that travellers are opting to use them as a way to explore new destinations and extend their holidays. According to data from travel search engine <a href="https://www.skyscanner.com.au/">Skyscanner</a>, there has been a notable uptick in bookings for long-haul flights to destinations such as Istanbul, London, Shanghai, and India. When travelling to Europe or the US, many travellers stopover in Asian cities such as Hong Kong, Bangkok in Thailand, Ho Chi Minh City in Vietnam, or Singapore. Alternatively, many stopovers occur in the UAE and Middle East area, with some flights stopping in Abu Dhabi, Dubai, or even Qatar. It’s easy to book your stopover holiday when booking your flights. Just select your original flight to your final destination, but change your second flight to leave the stopover destination a few days later. Skyscanner's travel expert Cyndi Hui told <a href="https://travel.nine.com.au/latest/holiday-hacks-two-in-one-stopover-destination/9e77c117-3a14-49a0-903f-b9847bc92fe0">9Travel</a> of the travel hack: "With Australia being so far from many global hubs, taking the time to enjoy a stopover instead of rushing through airports allows Australians to truly make the most of their travel experiences". "It's a savvy way to make the most of their travel time, turning what used to be just a stopover into a memorable part of the adventure." Image credits: Shutterstock

Travel Tips

Readers response: What airline will you always prefer to travel with?

When it comes to travelling, many people have their preferences of their favourite airline after past good experiences. Many seasoned travellers always opt to fly with their preferred airline (when it's possible), instead of running the risk of an uncomfortable experience. We asked our readers which airline they will always prefer to travel with, and the response was overwhelming. Here's what they said. Irene Hood - Singapore Airlines. Lovely cabin crew, smooth flights every time. David Slattery - Had quite a few nice flights with Turkish, both short and long haul. Sue Packer - Just came back from Europe with Emirates, great service, great food and the plane left on time! Rick Kehoe - Qantas if available. I have never had a bad flight experience after many flights both domestic and international. Anita Thornton - Finnair is a great airline! Diane Green - For overseas travel, Japan airlines gave the best service. For domestic, Virgin. George Jan Cafcakis - Qatar! It’s definitely the best. Russell Campbell - Singapore, but I just travelled on Vietnam Airlines and they were also good. Goldie Kilford - Air New Zealand for sure. Peter King - Safety: Qantas. Service: Qatar. On time: Lufthansa & Swiss. Friendly Crews: Fiji Air and Air New Zealand. Best Cattle Class Seat Pitches: All Nippon, Korean, Japan. Worst Airline: Jetstar! Image credits: Shutterstock

Travel Tips

Travel experts share their go-to hacks to transform your holiday

A group of travel experts have shared their holy grail hacks to transform your next holiday. From the best days to book your flights, to how to score an upgrade at a hotel, these seasoned travellers told the <a href="https://www.dailymail.co.uk/travel/article-13772593/Twenty-one-travel-hacks-transform-holiday-trick-getting-hotel-upgrade-cheapest-days-book-flights-expert-advice-Mails-experts.html">Mail Online</a> how to get the most out of your next trip. Pay in the local currency When you make a transaction via card in a foreign country, EFTPOS machines will often prompt you if you want to pay in your home currency or the local currency. By opting for the local currency, you can avoid potentially unfavourable currency conversions made by retailers, as the transaction will be made according to the standard daily rates set by Visa or MasterCard. Likewise, if withdrawing currency from a foreign ATM, always select the local currency to avoid paying the Dynamic Currency Conversion (DCC), which is effectively a way to squeeze more cash out of unwitting customers. Book a midweek flight Travellers are usually keen to book flights between Thursday and Monday to line up with the beginning and end of the week. However, flights booked midweek, especially from Monday to Wednesday, are consistently around 20-30 per cent less than at the weekend. Connect with an eSim card To avoid extortionate overseas data roaming charges, those travelling abroad should invest in an eSim card to keep using your phone on holiday. An eSim is cheaper and less hassle than dealing with buying an international physical Sim card, and can be changed for the best fees depending on regions. Book your hotel direct Many travellers opt to book their accommodation through a third-party after being enticed by deals, book now pay later schemes, or the abundance of options. However the Daily Mail’s Inspector hotel reviewer says “it almost always pays” to call and say you have seen a price that is lower than on the hotel’s website elsewhere. “Quite often you will get a lower rate, or an upgrade or a complimentary bottle in your room or a voucher for a drink at the bar,” the reporter says. By calling the hotel and asking them to match a price found on a third party site, you can often score the lower price, and even a better room. Never use airport currency exchange booths Currency exchange booths at airports are notorious for jacking up their conversion fees, meaning unsuspecting travellers can pay more to get their own money. It’s best not to leave cash conversion until the last minute. In the weeks before your trip, shop around at other exchange offices to ensure you’re getting the best rate on your own cash. Image credits: Shutterstock

Travel Tips

New rules for Aussies travelling to Europe in 2025

The European Union has introduced new rules for Aussie travellers planning a trip to Europe in 2025. The European Travel Information and Authorisation System (ETIAS) program, is a new entry requirement for visa-exempt nationals from 60 nations, including Australians, which will be introduced in the first half of 2025. The new travel authorisation requirement will apply to 30 countries within Europe including: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden and Switzerland. With a valid ETIAS travel authorisation, you can enter any of the European countries listed above as often as you want for short-term stays which is usually up to 90 days in any 180-day period. “However, it does not guarantee entry. When you arrive, a border guard will ask to see your passport and other documents and verify that you meet the entry conditions," the EU website states. The ETIAS will cost around seven Euros ($11.50) and is linked to your passport. It is valid for up to three years or until the passport expires, whichever comes first. If you get a new passport, you need to get a new ETIAS. Travellers can apply using an online application form on the ETIAS website, or apply through their app. Most applications are processed within minutes but some applications may take longer to process. “If so, you will receive a decision within four days. “Please note that this period could be extended by up to 14 days if you are requested to provide additional information or documentation, or up to 30 days if you are invited to an interview.” After the application, “you will receive an email confirming the submission of your application which will include your unique ETIAS application number: make sure you keep this number for future reference.” “Once your application has been processed, you will receive another email informing you about its outcome. “When you get your ETIAS travel authorisation please make sure your name, passport number and other information is correct: if there is any mistake, you will not be allowed to cross the border.” Travellers are required to always carry the same travel documents used in their ETIAS application “otherwise, you will not be allowed to board your flight, bus or ship, or to enter any of the European countries requiring ETIAS.” Image: Shutterstock

Travel Tips

Readers response: What’s your favourite travel memory with your children?

One of the best parts about travelling is having your kids, or even grandkids, in tow to experience a unique holiday together. We asked our reader what their favourite travel memory they're shared with their children is and the response was overwhelming. Here's what they said. Lynne Fairbrother - All the camping trips we made when they were kids, great family fun. Karen Ambrose - A long boat trip on the canals in England…. fabulous. Christine Whyte - Lovely family holidays where I holidayed with my parents, aunties, uncles, and cousins every year for over 18 years. Great summers of beach and fishing and fun times. Suzie Justinic - Many overseas trips we had as a family to see family in other countries. Cathrine Stanton Hillier - Sleeping in the back window ledge of the car. Mum made a small sleeping bag for me. Margie Buckingham - Every year, one holiday was an ‘away holiday’ while the other 3 were spent at nanny’s beach house, which were just the best! Touring Tassie on the Spirit was a great holiday. So was the Gold Coast doing the Theme Parks. But I think the best was driving to Sydney for the Olympics 2000. Barbara Holmes - The great holidays staying at Cairns Colonial Resort in the 80’s! Jill Harker - Emigrating from the UK to Australia on the ship in 1970 when the boys were about 7 and 8! Image credits: Shutterstock

Travel Tips

Flight attendant shares travel tips for loved-up couples

A flight attendant has shared what loved-up couples should not do when taking a trip together. Seasoned cabin crew member Suzanne Bucknam has warned couples to be wary of appropriate behaviour, and advised against these travel “icks”. Suzie told <a href="https://www.skyparksecure.com/">SkyParkSecure</a>, that one thing couples should be aware of when travelling are public displays of affection (PDA), which could land you in trouble. "A kiss on the lips or handholding doesn't warrant ick status but making out and putting a blanket over each other's laps gets very uncomfortable for everyone in the vicinity," Suzanne explains. "I've seen several couples attempt to join the mile-high club either in the bathroom or, worse, at their seats with said blanket over them. In fact, I've caught a couple with their pants down in the back of our plane once. We did an emergency landing and had them escorted off the plane, then got back in the air without them.” "It should be known that you can be arrested for public indecency, and flight attendants won't be afraid to call the authorities if they see you trying to get too cosy with your partner." Another must do for travelling couples is to book your plane seats together, rather than ask other passengers to change seats. "A simple boarding process can become a nightmare if couples don't book seats together but demand another passenger to move," she says. "Not only does it slow the process down significantly, but it often causes an altercation between passengers when someone won't move. Someone picked and paid for that seat, so they are well within their right to turn down a request to switch." Suzie said that while she understands couples, especially honeymooners, are excited about their travels, that doesn’t give them the right to make demands, and being difficult will get you nowhere. "What I wish all honeymooners knew before travelling somewhere is that, just because they're celebrating, it doesn't mean others have to celebrate or contribute to that celebration. If you do get a free upgrade or a free drink, fantastic! But please don't demand one from an unsuspecting flight attendant," she explains. "And as an employee who has been in that situation, it's just plain awkward if there are no upgrades available, and it's against the airline's policy to give freebies." Image credits: Shutterstock

Travel Tips

Passenger sparks debate over travellers sleeping in aisle seats

A heated debate has erupted online after a passenger suggested those sitting in an aisle seat should remain alert and awake for the entire flight, with the only exception being if it's a long-flight of seven hours or more. “A person sitting in an aisle seat on a plane should not be allowed to sleep," they wrote on Reddit. The reason behind it, according to the passenger, is to ensure that middle and window seat passengers can access the toilet, get served by flight attendants, and evacuate quickly in an emergency. “There are some exceptions and those would probably be on any flight longer than seven hours. “But anything shorter than that, you should not be sleeping. What if the middle or window passenger needs the bathroom, or if the flight attendant needs to hand them something – You’ll be in the way.” They added that a snoozing aisle seat passenger could potentially slow down evacuation during an emergency and put everyone at risk. “Now you would be risking people’s lives because you fell asleep,” they wrote. Social media users flocked to the Reddit thread to share their thoughts. “Nah, just poke me and wake me up if you need me to get up or do something," one wrote. “I’m well aware that I’m in the way, believe me. I’m certainly not there because I wanted to be in the aisle seat.” “If you sleep in an aisle seat, you deal with people getting up. That’s the unwritten rule," another added. A few others supported the idea, but shared their own take on plane etiquette. “My take on this: if you sleep in the aisle seat, you must be okay with being woken up multiple times to let the folks in your row get up. “Other flight rules: middle seat gets the armrest, and window seat must raise the window shade during taxi, takeoff, and landing so the rest of us in the row can watch.” Image: Shutterstock

Travel Tips

Supermoons are boring – here are 5 things in the sky worth your time

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/michael-j-i-brown-113">Michael J. I. Brown</a>, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a> A <a href="https://science.nasa.gov/solar-system/moon/what-is-a-supermoon/">supermoon</a> may sound exciting, but it’s a modest coincidence. As the Moon orbits Earth, its distance from us varies from 357,000 to 407,000 kilometres. When the Moon and the Sun are in almost opposite directions from Earth, we get a full moon. A “supermoon” is a full moon where its position along its orbit is within 10% of its closest approach to Earth. That’s it. This means a supermoon has an apparent diameter that’s 14% larger than the smallest possible full moon. That’s not a lot. You can’t really notice the difference by eye. As an astronomer, I have a problem with supermoons. There are genuine wonders to see in the night sky, so don’t be disappointed by a dull, overhyped supermoon. <h2>When is the best time to view the Moon?</h2> Articles hyping supermoons are easy. ChatGPT can do it. Say it’s the first supermoon since whenever, add some superlatives, and throw in a telephoto lens photo of a full moon with a landmark. Perhaps the supermoon coincides with another otherwise normal full moon, so it can be a “<a href="https://moon.nasa.gov/news/197/super-blue-moons-your-questions-answered/">blue supermoon</a>” or a “<a href="https://www.accuweather.com/en/space-news/super-worm-moon-how-to-see-the-final-full-moon-of-winter/695656">worm supermoon</a>” or whatever. It’s still just a full moon. If you do want to look at the Moon and it happens to be a supermoon, go for it. But there are better times to admire our only natural satellite, particularly with binoculars or a telescope. The best time to look at the Moon is when its shadows, as seen from Earth, are longest. These long shadows help the craters and mountains stand out from the surrounding plains, so you can appreciate the dramatic landscape of our neighbouring world. The shadows are longest when the Moon appears as a half moon in the night sky. During a full moon or a supermoon the shadows are at their shortest – not nearly as impressive. <h2>Supermoons are a distraction</h2> Have you seen the craters of the Moon, <a href="https://skyandtelescope.org/observing/viewing-saturn-the-planet-rings-and-moons/#:%7E:text=Viewing%20Saturn's%20Rings,the%20ball%20of%20the%20planet.">the rings of Saturn</a>, the clouds of Jupiter or <a href="https://skyandtelescope.org/observing/celestial-objects-to-watch/observing-the-great-orion-nebula/#:%7E:text=First%20locate%20Orion's%20Belt%2C%20which,ll%20find%20the%20Orion%20Nebula.">the Orion nebula</a> with a telescope? They truly are awe-inspiring. Even the most dedicated astronomers return to view them time and time again. <figure class="align-right zoomable"></figure> In fact, astronomers prefer to avoid nights with supermoons and catch up on lost sleep. Full moons flood the night sky with light and make it harder to view more subtle and interesting sights. Want to look at the grand expanse of the Milky Way with the unaided eye? Want to see a meteor shower, comet or aurora? Best done without a damn supermoon. It can be fun to see something truly rare or unusual in the sky. But supermoons don’t qualify for that either. Using the definition I mentioned earlier, there are typically three or four supermoons each year. More restrictive definitions give us one or two supermoons per year. Not only is that not rare, it still just looks like a full moon. There are rarer celestial events that really can inspire. Millions of people across the globe saw <a href="https://science.nasa.gov/science-research/heliophysics/how-nasa-tracked-the-most-intense-solar-storm-in-decades/">bright auroras in May 2024</a>, including places where truly spectacular auroras are few and far between. Comets can also be wonderful. Every decade or so, a comet swings into the inner Solar System and produces a bright tail, millions of kilometres long and visible from Earth. Back when I was a student, I saw <a href="https://en.wikipedia.org/wiki/Comet_Hyakutake">Comet Hyakutake’s bright blue tail</a> stretch across a huge expanse of sky. Sometimes comets fizzle, but when they’re great they are amazing. <h2>Want something impressive? Try an eclipse</h2> Auroras and comets can be fickle, but eclipses are predictable and put on a reliable show. Take total solar eclipses, when the Moon covers the Sun and day turns briefly into night. Thousands travel across the globe to see them. I will be travelling to New South Wales for the <a href="https://eclipse.asa.astronomy.org.au/eclipse-australia-2028/">2028 eclipse</a>. <figure class="align-left zoomable"><a href="https://images.theconversation.com/files/613126/original/file-20240813-17-ewfavl.jpeg?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"> </a></figure> <a href="https://www.space.com/15689-lunar-eclipses.html">Lunar eclipses</a>, when the Moon falls within Earth’s shadow, can be a more accessible eclipse experience, which is visible from your own home <a href="https://en.wikipedia.org/wiki/List_of_lunar_eclipses_in_the_21st_century">every few years</a>. During the best lunar eclipses, the Moon turns a dark red as the only light that reaches it comes through Earth’s atmosphere. As an astronomer, I encourage people to look at celestial sights. Go out and see the Moon when it can really impress – during an eclipse or viewed through a telescope. Or enjoy the planets, auroras, comets and meteor showers when there is no Moon at all. But please don’t waste time on supermoons.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/236416/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/michael-j-i-brown-113">Michael J. I. Brown</a>, Associate Professor in Astronomy, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/supermoons-are-boring-here-are-5-things-in-the-sky-worth-your-time-236416">original article</a>. </div>

Travel Tips

Catriona Rowntree shares tips for picking the perfect souvenir

After travelling the world as the host of Getaway for almost 30 years, Catriona Rowntree has collected a stash of souvenirs to remind her of her travels. Like many travellers and tourists, Catriona has spent much time in a souvenir shop trying to decide on the best trinket to remind her of unique corners of the world. According to the well-travelled TV host, there is one go-to souvenir that is far superior to others: magnets. Catriona has a dedicated wall in her kitchen for the magnets that she's collected from all over the world, each of which she associates with a special memory. She told <a href="https://travel.nine.com.au/latest/scenic-catriona-tip-for-finding-the-right-travel-souvenirs/8b9874ed-41b3-4c09-b92a-86e34be0c100">9Travel</a> that they are the ideal souvenir for anyone to pick up on their travels. "If you're going to collect something, stick to something that's easy to just grab and go." "You can get one at any airport, just before you leave to come home," she says. For her, the tradition started when a visitor in her home remarked that for a travel reporter, Catriona didn't have many trinkets around the house which showed off all the places she'd visited. And so she started her collection, even buying a magnetic sheet to affix inside her pantry, where she keeps her souvenirs for all to see. "I, of course, could stand here and tell you a story for every single magnet there," she remarks, looking at the wall with fondness. "I absolutely adore taking a look at this wall and seeing all the crazy places I've gone to. Of course, the crazier the magnet the better," she laughs, pointing out a magnet of a sailor's head which doubles as a bottle opener. Catriona added that some travellers similarly love to collect snow globes or postcards from every destination they visit around the world, but for her, you can't get better than a fridge magnet that can be displayed proudly. Image credits: Shutterstock

Travel Tips

Qantas slashes cost of more than 450,000 airfares

Qantas has slashed the price of more than 450,000 airfares as part of its latest sale. The airline announced the week-long sale on Tuesday, with more than 120 routes abroad included, and almost 30 overseas destinations. Return economy flights from Sydney to New York is being offered for $1,699 and Sydney to London for $1,799. Flights from Melbourne to Los Angeles are also part of the offer, going for $1,099, while Brisbane to Seoul return economy fares are available for $949. Sydney to Port Vila is $699 and Brisbane to Queenstown is $619. Premium economy return sale fares include Sydney to Los Angeles for $3,199, Melbourne to London for $3,899 and Brisbane to New York for $4,199. For those wanting to travel in business there also return sale fares for Melbourne to Auckland for $1,199, Brisbane to Tokyo for $4,999 and Sydney to London for $8,999. Return Classic Plus fares include Melbourne to Los Angeles in economy from 73,900 points plus $360, Brisbane to New York in premium economy from 236,300 points plus $684, and Brisbane to Tokyo in business from 303,900 points plus $470. The sales will run until 11.59pm AEST on Monday, August 5, unless sold out prior, for travel dates between August and June 2025. Image: Shutterstock

Travel Tips

6 extra items to pack when travelling by yourself

Travelling alone can be a life changing experience, but it also requires a few extra precautions. Pack these six things to keep yourself safe. 1. Doorstop A simple wedge of wood or plastic can give you priceless peace of mind in a hotel room. Even if you lock the door, people might be able to break the lock or use a cloned key. A doorstop quickly and easily wedges it shut so you can sleep easy. If you want to go one step further, you can get special doorstop alarms that will emit a loud siren if anyone tries to force the door. 2. Extra lock There are endless uses for an extra padlock or bike lock-style cable. You can double up on your hotel door, secure your train carriage or ship cabin, double lock your suitcase or chain it to something sturdy. Compact, sturdy locks are relatively cheap and easy to carry with you, and will deter most thieves or intruders looking for an easy mark. 3. First aid kit If you don’t have a travel buddy to send down to the chemist, a simple first aid kit can be a lifesaver. Keep it stocked with band aids, basic bandages, pain killers, antibiotics, antihistamines and gastro meds, along with anything else you think will be useful. If you are really unwell, you’ll obviously need to see a doctor, but having the first line of defence within easy reach is always smart. 4. Whistle or personal alarm If you will be walking through unfamiliar cities at night (or even in the day), a whistle or personal alarm can give you a feeling of security. If anyone unsavoury approaches you, a loud noise will startle them and generally scare them off. It also draws the attention of other people and makes them aware of your predicament. 5. Small torch Never underestimate the power of a little light to make you feel safe. It’s great for finding your way through dark streets, looking for your keys in your bag or seeing the lock on your hotel door. You can get small lights that attach to a keychain or wallet and give out a surprisingly bright light. People are less likely to approach you if they feel they will be seen. 6. Fake wedding ring This one is for the ladies – in some countries an unmarried woman is seen as an easy target. Buying a cheap, fake wedding ring can give you a simple cover. Men may be less likely to approach you and, if they do, you can simply say your husband is in the next shop or waiting for you back at the hotel. Image credits: Shutterstock

Travel Tips

So when should you book that flight? The truth on airline prices

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/yuriy-gorodnichenko-144556">Yuriy Gorodnichenko</a>, <a href="https://theconversation.com/institutions/university-of-california-berkeley-754">University of California, Berkeley</a> and <a href="https://theconversation.com/profiles/volodymyr-bilotkach-145437">Volodymyr Bilotkach</a>, <a href="https://theconversation.com/institutions/newcastle-university-906">Newcastle University</a> How airlines price tickets is a source of many <a href="http://airtravel.about.com/od/travelindustrynews/a/mythticket.htm">myths</a> and urban legends. These include tips about the best day of the week to buy a ticket, last-minute discounts offered by the airlines, and the conspiracy theories suggesting that the carriers use cookies to increase prices for their passengers. None of these three statements is entirely true. Studies have suggested that prices can be higher or lower on a given day of the week – yet, there is no clear consensus on which day that is. Offered prices can in fact drop at any time before the flight, yet they are much more likely to increase than decrease over the last several weeks before the flight’s departure. Further, the airlines prefer to wait for the last-minute business traveler who’s likely to pay full fare rather than sell the seat prematurely to a price conscious traveler. And no, the airlines do not use cookies to manipulate fare quotes – adjusting their inventory for specific customers appears to be beyond their technical capabilities. What is true about pricing in the airline industry is that carriers use complex and sophisticated pricing systems. The airline’s per passenger cost is the lowest when the flight is full, so carriers have incentive to sell as many seats as possible. This is a race against time for an airline and, of course, no company wants to discount its product more than it has to. Hence, the airlines face two somewhat contradictory goals: to maximize revenue by flying full planes and to sell as many full-fare seats as possible. This a process known in the industry as yield or revenue management. <h2>Airlines and their bucket lists</h2> Here is how <a href="http://commons.erau.edu/cgi/viewcontent.cgi?article=1522&context=jaaer">yield management</a> works. For each flight or route (if we are talking about multi-segment itineraries), the airline has a set of available price levels – from the most expensive fully refundable fare to the cheapest deeply discounted non-refundable price. The industry jargon for these prices is “buckets.” Then, seats can be interpreted as balls that are allocated among these buckets. Initial allocation of seats between the price buckets is determined by historical data indicating how well a certain flight sells. For example, fewer deeply discounted seats will be offered on a flight on Thanksgiving week than on the same flight during the third week of February. As the seats on a flight sell, yield managers monitor and adjust the seat allocation. If, for instance, the sales are slower than expected, some of the seats might be moved to lower-priced buckets – this shows up as a price drop. As noted above, such price drops can occur at any time before the flight. However, the general trend of price quotes is upward starting from about two to three weeks before the flight departure date. Of course, an average traveler wants to know when he or she should buy the tickets for the next trip. Another important question is where to buy this ticket. Airlines distribute their inventory on their own websites and on several computer distribution systems, meaning that prices can sometimes differ depending on where one looks. We are not entirely sure what precipitates this phenomenon – likely explanations include differences in contracts between the airlines and the distribution systems/travel agents, implying that different travel agents may not have access to the airline’s entire inventory of available prices. <h2>When to book</h2> The airlines’ yield managers start looking at flight bookings about two months before the departure date. This implies that it generally does not pay to book more than two months in advance: studies show that initially the airlines leave the cheapest price buckets empty, and yield managers may move some seats into those buckets if a couple of months before the departure date the flight is emptier than expected. Between two months and about two to three weeks before the flight date, the fare quotes remain mostly flat, with a slight upward trend. However, and perhaps paradoxically, there is a good chance of a price drop during this period. We tend to monitor prices for several days – sometimes up to a week – hoping for a potentially lower quote. It does not always pay off, but sometimes we do manage to save a considerable amount of money. Two to three weeks before the flight date, the price quotes start increasing. This is the time when business travelers start booking. While price drops are still possible, a chance of a price increase is much higher if you wait to book within this time period. This is also the time when one can find significant differences between price quotes, depending on where one looks and what contract they have with the airlines. Thus, if we book a trip earlier than three weeks before the flight date, we tend not to delay the purchase. At the same time, we check quotes from multiple travel agents, or go directly to a site that allows for a quick comparison of prices (such as <a href="https://www.kayak.com">kayak.com</a> or <a href="http://www.skyscanner.net">skyscanner.net</a>). Or check the airline itself. As for answering the original question we posed, here are some simple tips. First, if you have to travel during a peak period, such as Thanksgiving week, it is generally best not to delay buying that ticket. Otherwise, it might pay to monitor the offered prices for some time before committing. The best strategy for booking within the last couple of weeks before the flight, however, is not to delay the purchase, but to try getting quotes from several agents, which is easy to do in the internet age.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/34033/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/yuriy-gorodnichenko-144556">Yuriy Gorodnichenko</a>, Associate Professor of Economics, <a href="https://theconversation.com/institutions/university-of-california-berkeley-754">University of California, Berkeley</a> and <a href="https://theconversation.com/profiles/volodymyr-bilotkach-145437">Volodymyr Bilotkach</a>, Senior Lecturer in Economics, <a href="https://theconversation.com/institutions/newcastle-university-906">Newcastle University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/so-when-should-you-book-that-flight-the-truth-on-airline-prices-34033">original article</a>. </div>

Travel Tips

Doctor shares his top tips for tackling jet lag

Dr Nick Coatsworth has shared his fool-proof hacks to tackle jet lag on your next international flight. The TV host and doctor often travels around the world for work, and as a result, knows a thing or two about feeling jet lagged. "I hate jet lag. I suffer from it a lot," he told <a href="https://travel.nine.com.au/latest/flight-tips-how-to-avoid-jet-lag-dr-nick-coatsworth/37872af3-ff61-48c1-810d-4b20f4d2bde2">9Travel</a>. Despite being prone to jet lag, Coatsworth has honed his own tips for tackling the dreaded side effect of travelling across time zones. "Stay awake for as long as you possibly can to try and reset your body clock," he advises. Another go-to hack to overcome jet lag is a simple change you can make as soon as you board the plane. "As soon as I get on the plane I change my watch to the destination time," he said. While there are many tips and tricks floating around that people use to beat the dreaded jet lag, Dr Nick said all you can do is try to adjust to a new time zone as soon as possible. "Ultimately you've just got to push through the fatigue and try and resync yourself as quickly as possible," he says. Image credits: Nine / Shutterstock

Travel Tips

Savvy mum shares her unique packing hacks

A savvy mother and experienced traveller has shared her ultimate hacks for packing your suitcase when heading on your next holiday. Melbourne mum Chantel Ibbotson, who goes by the name Mama Mila online, shared the helpful hacks with her 2.8 million followers, with many people praising her ingenuity. Her go-to tips ranged from keeping your luggage smelling fresh, utilising your space, and how to prevent breakages. One tip Chantel shared, that has been labelled a “game changer”, involves placing necklaces through a straw to prevent them from tangling. One follower commented on the video saying, “I used your straw tip for necklaces last time I travelled and it was awesome.” <blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 540px; min-width: 326px; padding: 0; width: calc(100% - 2px);" data-instgrm-permalink="https://www.instagram.com/reel/C81L4KYSeAA/?utm_source=ig_embed&utm_campaign=loading" data-instgrm-version="14"> <div style="padding: 16px;"> <div style="display: flex; flex-direction: row; align-items: center;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;"> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;"> </div> </div> </div> <div style="padding: 19% 0;"> </div> <div style="display: block; height: 50px; margin: 0 auto 12px; width: 50px;"> </div> <div style="padding-top: 8px;"> <div style="color: #3897f0; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: 550; line-height: 18px;">View this post on Instagram</div> </div> <div style="padding: 12.5% 0;"> </div> <div style="display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;"> <div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);"> </div> <div style="background-color: #f4f4f4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;"> </div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);"> </div> </div> <div style="margin-left: 8px;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;"> </div> <div style="width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg);"> </div> </div> <div style="margin-left: auto;"> <div style="width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);"> </div> <div style="background-color: #f4f4f4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);"> </div> <div style="width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);"> </div> </div> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;"> </div> </div> <p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;"><a style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;" href="https://www.instagram.com/reel/C81L4KYSeAA/?utm_source=ig_embed&utm_campaign=loading" target="_blank" rel="noopener">A post shared by Chantel Mila Ibbotson (@mama_mila_au)</a> </div> </blockquote> The mum-of-two also showed her followers how a simple button can be used to keep pairs of earrings together by fastening each earring through one hole in the button. Chantel also recommended hanging packing cubes that can be purchased online as a great solution for “making packing and unpacking so quick and easy”. The influencer also suggested spraying perfume on cotton pads to keep your suitcase smelling fresh, as well as placing cotton pads in makeup compacts to prevent breakage. Another tip was to pack a separate bag, whether it's a plastic bag or a dust bag, to hold your dirty laundry. This tip allows travellers to easily find clean clothes while also keeping dirty, smellier clothes separate in their own bag. The video racked up thousands of views, with many saying they will try out the unique tips next time they travel. Image credits: Shutterstock

Travel Tips

Heading to Bali or somewhere tropical these holidays? Here’s what you need to know about dengue fever

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/cameron-webb-6736">Cameron Webb</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> If you’re looking to escape the Australian winter for your next holiday, don’t forget where there’s warmth, there will also be mosquitoes. In turn, tropical destinations can be hot spots of mosquito-borne diseases such as dengue. In fact, Australian health authorities have warned travellers to Bali <a href="https://www.health.wa.gov.au/Media-releases/2024/May/Dengue-fever-warning-for-Western-Australian-travellers">to be aware</a> of the risk of dengue, with cases surging in the region. So here’s how to protect yourself and your family on holidays. <h2>What is dengue?</h2> <a href="https://www.who.int/news-room/fact-sheets/detail/dengue-and-severe-dengue">Dengue virus infection</a> (commonly known as dengue fever, or just dengue) is caused by viruses spread by the bite of a mosquito. The mosquito species that typically transmit dengue are Aedes aegypti and Aedes albopictus. There are four strains of dengue virus. Each has the potential to cause illness that can range from <a href="https://www.cdc.gov/dengue/signs-symptoms/index.html">mild to severe and potentially life threatening</a>. Symptoms <a href="https://www.health.nsw.gov.au/Infectious/factsheets/Pages/dengue.aspx">typically include</a> rash, fever, chills, headache, muscle and joint pain, and fatigue. People also often report abdominal pain, nausea and vomiting. While infection with just one of these viruses can make you sick, subsequent exposure to other strains can have more <a href="https://theconversation.com/explainer-what-are-antibodies-and-why-are-viruses-like-dengue-worse-the-second-time-68227">serious health implications</a>. In these cases, symptoms can also include the presence of blood in vomit, bleeding gums and breathing difficulties. Dengue infection must be confirmed via a blood test, but there are <a href="https://www.healthdirect.gov.au/dengue-fever">no specific treatments</a>. Most people will recover on their own however <a href="https://www.cdc.gov/dengue/treatment/index.html">staying hydrated is crucial</a> and pain relief can help with symptoms. If more severe illness occurs, seek urgent medical care. <h2>Are travellers at risk?</h2> The disease is now endemic in around 100 countries and <a href="https://www.cdc.gov/dengue/areas-with-risk/index.html">an estimated 4 billion people</a> are considered at risk. Asian countries represent <a href="https://www.who.int/news-room/fact-sheets/detail/dengue-and-severe-dengue">around 70%</a> of the global disease burden. Even <a href="https://theconversation.com/how-the-paris-olympics-could-become-a-super-spreader-event-for-dengue-231853">Europe is at risk</a>. <a href="https://www.who.int/emergencies/disease-outbreak-news/item/2023-DON498">One of the worst years</a> on record was 2023, but the burden of dengue continues to grow. In the first four months of 2024, Indonesia reported <a href="https://www.who.int/emergencies/disease-outbreak-news/item/2024-DON518">three times as many cases</a> of dengue compared to the same period in 2023. Dengue is not a new risk to Australian travellers. Before COVID disrupted international travel, the number of Australians returning from tropical destinations with dengue <a href="https://europepmc.org/article/med/23692160">was steadily increasing</a>. For example, between 2010 and 2016, there was an average <a href="https://www.mdpi.com/2414-6366/3/1/9">annual increase of 22%</a> of travellers returning to Victoria with dengue. Almost half of these people contracted the illness in Indonesia. Bali is well documented as posing <a href="https://academic.oup.com/jtm/article/25/1/tay061/5065180?login=false">a risk of dengue</a> to travellers. International travel restrictions due to COVID <a href="https://academic.oup.com/jtm/article/31/2/taae014/7577676">abruptly stopped this trend</a>. But now Australians are again embracing international travel, <a href="https://www.dailymail.co.uk/news/article-13303747/Worrying-reason-Aussie-travellers-Bali-coming-sick.html">cases are rising once more</a>. Bali isn’t the only destination with <a href="https://www.washingtonpost.com/health/2024/06/30/dengue-puerto-rico-mosquito-climate-change/">a surge in dengue</a>, but we know it’s a popular holiday destination for Australian travellers. There’s little doubt plenty of families will be heading to Bali these school holidays. <h2>How about the risk in Australia?</h2> Not all mosquitoes can spread dengue viruses. This is why the risk is different in Bali and other tropical regions compared to Australia. Although there are more than 40 Australian mosquito species known or suspected to be transmitting local pathogens, such as <a href="https://journals.plos.org/plospathogens/article?id=10.1371/journal.ppat.1005070">Ross River virus</a>, Australia is generally free of local dengue risk due to the limited spread of Aedes aegypti and Aedes albopictus. While Aedes aegypti is found in <a href="https://www.health.qld.gov.au/clinical-practice/guidelines-procedures/diseases-infection/diseases/mosquito-borne/dengue/virus-fever">parts of Queensland</a>, thanks to interventions by the <a href="https://www.worldmosquitoprogram.org/en/global-progress/australia/cairns-and-surrounds">World Mosquito Program</a> and local authorities dengue risk is low. These interventions include the release of laboratory-bred mosquitoes that prevent mosquitoes in the environment <a href="https://www.worldmosquitoprogram.org/en/work/wolbachia-method">spreading viruses</a>, as well as <a href="https://www.sciencedirect.com/science/article/pii/S2221169115309096">community education</a>. But <a href="https://theconversation.com/after-decades-away-dengue-returns-to-central-queensland-117821">local cases</a> occasionally occur. Aedes albopictus is not currently found <a href="https://theconversation.com/how-we-kept-disease-spreading-asian-tiger-mozzies-away-from-the-australian-mainland-72873">on the Australian mainland</a> but is present in the islands of the Torres Strait. A dengue outbreak <a href="https://www.torres-cape.health.qld.gov.au/about-us/news/further-cases-of-dengue-fever-on-mer">has occurred</a> there this year. <h2>Keep mozzies away during the day, not just at night</h2> While there is a vaccine available, it’s not recommended for <a href="https://onlinelibrary.wiley.com/doi/full/10.5694/mja2.50471">short-term travellers</a>. There are <a href="https://www.health.gov.au/resources/publications/atagi-advice-on-the-use-of-dengvaxiar-for-australians">strict eligibility criteria</a> for its use, so speak to a health professional for advice. For the majority of travellers, preventing mosquito bites is the only way to prevent disease. But there are differences in the behaviour of dengue mosquitoes that mean the normal measures to avoid mosquito bites may not be as effective. During the Australian summer, mosquitoes found in local wetlands can be <a href="https://theconversation.com/the-worst-year-for-mosquitoes-ever-heres-how-we-find-out-68433">incredibly abundant</a>. We tend to need to reach for the repellent and cover up to stop bites as soon as the sun starts going down. Aedes aegypti and Aedes albopictus <a href="https://journals.plos.org/plosntds/article?id=10.1371/journal.pntd.0010818">can aggressively bite people</a> but they’re not as abundant as the swarms of summer mosquitoes back home. They also bite during the day, not just at night. So for those travelling to Bali or other areas at risk of dengue, putting insect repellent on <a href="https://www.smartraveller.gov.au/news-and-updates/global-dengue-fever-outbreaks">throughout the day</a> is recommended. <h2>What to pack for protection</h2> If you’re staying in a major resort, there’s likely to be a mosquito control program in place. This may include minimising available water for mosquito breeding in combination with insecticide use. Mosquitoes are also less likely to be an issue in air-conditioned accommodation. But if you’re planning to spend time out and about visiting local villages, markets, or in nature, it’s best to protect against bites. Light coloured and <a href="https://www.health.wa.gov.au/Media-releases/2024/May/Dengue-fever-warning-for-Western-Australian-travellers">loose fitting clothing</a> will help stop mosquito bites (and help keep you cool). Covered shoes can help too – dengue mosquitoes <a href="https://www.npr.org/sections/goatsandsoda/2016/02/22/465594861/why-zika-spreading-mosquitoes-love-ankles">love smelly feet</a>. Finally, it’s best to take some insect repellent with you. There may not be any available at your destination, and formulations on sale might not have been through the same thorough testing as products <a href="https://www.apvma.gov.au/">approved in Australia</a>.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/233670/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/cameron-webb-6736">Cameron Webb</a>, Clinical Associate Professor and Principal Hospital Scientist, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/heading-to-bali-or-somewhere-tropical-these-holidays-heres-what-you-need-to-know-about-dengue-fever-233670">original article</a>. </div>

Travel Tips

The surprising reason commercial planes are painted white

Up until the middle of the last century, airplanes would fly through the sky unpainted as shiny silver tubes. But now, we are so used to seeing plane bodies being painted white, with the exception of the airline’s logo and a splash of colour on the plane’s tail. But this drastic look isn’t just about style and uniformity, as there is a simple reason why plane bodies are left plain. First of all, white paint jobs will show wear and tear a lot quicker on huge commercial planes and while this might not be ideal for a car or house, it's perfect for planes. From takeoff to landing, a plane goes through a lot. While the aircrafts are always deemed safe for flying, it'll likely suffer minor cosmetic damages as it hurtles through the sky at 900 kilometres per hour. Due to the frequent minor chips and scratches a plane has inflicted, using the white paint helps engineers and maintenance teams to spot any of these issues with ease. Another reason that white is uniform in the skies is because white paint is going to fade at a much slower rate than a darker shade. As planes fly above the clouds, they're exposed to a lot of UV rays which speeds up the process of the paint fading. Lastly, it's been found that birds can spot planes against the sky easier when they're painted all-white, as sometimes in rare occasions, birds can pose a safety risk. It wasn’t until 50 years ago that airlines started painting their planes, with Air France being credited for starting the movement in the 1970s. "Since Air France introduced the first 'Euro-white' livery in 1976, the all-white fuselage look has become increasingly standard for the world's airlines," aviation historian Shea Oakley told Travel + Leisure. Image credits: Shutterstock

Travel Tips

Why you should be wary of charging your phone in an airport

While charging stations at airports can often be life-savings before boarding a flight, it turns out these handy outlets can be leaving you vulnerable. Many people have fought over a spot to charge up your devices at the last minute before embarking on a holiday, but next time you leave home with your phone or laptop needing some more juice, think again. Emily Stallings, co-founder of tech retailer <a href="https://www.getcasely.com/">Casely</a>, says that by plugging your phone into a power outlet at a public USB charging station, you're at risk of data breaches and malware infection. "If a device gets infected, it could end up leaking sensitive information or even stop working properly," she told <a href="https://travel.nine.com.au/latest/charging-phone-at-the-airport-danger-expert/57d141df-33ba-4a50-89e5-26f6f2a0c18d">9Travel</a>. These public USB ports have often been compromised by cybercriminals, who then use these unsecured ports to steal sensitive information transmitted between devices. "From personal emails to financial data, the information intercepted through these compromised ports could lead to identity theft, financial loss, and other serious consequences," explains Stallings. The best way to get around this threat, without letting your phone run out of battery, is to pack a portable charging device in your carry-on bag every time you travel. With your own cord and power bank, it's far less likely that any sneaky hackers will be able to access your device's data. Stallings says you can also enable security features such as USB Restricted Mode on your device, for those moments when you're desperate for a charger and have to rely on public ports. "This adds an extra layer of protection against potential data breaches and malware infections when charging from public USB ports." "By activating USB Restricted Mode or similar security features, you restrict data transfer over USB connections, effectively preventing unauthorised access to your device's data while charging in public spaces." Image credits: Shutterstock

Travel Tips

Costly mistakes to avoid when travelling

While travelling the world is an exciting and joyous way to spend your time, getting caught up in devious scams can sour even the best holiday. Whenever you hit the road, there are a few measures you can take to avoid being hit by hackers and sneaky scammers, and enjoy your holiday to the fullest. When it comes to online scams, some countries are more vulnerable than others, as NAB Executive, Group Investigations Chris Sheehan says. "Just like you'd plan visas and check the weather at your destination, it's also vital to be aware of common scams in the countries you're visiting so you can recognise the red flags and protect yourself," he said. When travelling in a new country, it’s important to be wary of accommodation or booking website impersonation scams, ticket scams for major events, as well as overcharging or wrong charge scams. "The pressure to act now is a red flag in ticket and accommodation scams, while overcharging or wrong charging scams play on distraction and a lack of detail," Chris says. "Letting your bank know where and when you're travelling can help with more accurately monitoring your transactions for suspicious activity while you're away." Another thing to be wary of when on holiday is to avoid posting your real-time location on social media, or inadvertently sharing sensitive travel documents can expose you to serious risks. Broadcasting your whereabouts can make you vulnerable to various risks, including burglary, stalking, and other personal safety threats, while criminals can take advantage of the information you share to target you or your unoccupied home. Travel expert Trevor Cooke from <a href="https://earthweb.com/">EarthWeb</a> says its best to wait until you’ve moved on until you share your location online. "If you really want to share the location of where you travelled to, wait until you're already at the next location or back home," he says. "By delaying your posts, you can still share your experiences without compromising your safety." Another thing to keep in mind when you’re next hitting the road is to be wary about unknowingly posting personal information online, such as your boarding pass. "Many people don't realise how much personal information is on your boarding pass and other temporary travel documents," says security expert Trevor. "Boarding passes, for instance, contain sensitive data such as your full name, frequent flyer number, and a barcode that can be scanned to reveal even more information. This data can be used by criminals for identity theft, unauthorised access to your accounts, and other malicious activities." "To protect yourself, always double-check that any picture you upload does not include your boarding pass, travel itinerary, hotel receipts, or any other sensitive information," Trevor adds. Image credits: Shutterstock

Travel Tips

How do airplanes fly? An aerospace engineer explains the physics of flight

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/craig-merrett-1509278">Craig Merrett</a>, <a href="https://theconversation.com/institutions/clarkson-university-4276">Clarkson University</a> Airplane flight is one of the most significant technological achievements of the 20th century. The <a href="https://airandspace.si.edu/explore/stories/wright-brothers">invention of the airplane</a> allows people to travel from one side of the planet to the other in less than a day, compared with weeks of travel by boat and train. Understanding precisely why airplanes fly is an ongoing challenge for <a href="https://www.clarkson.edu/people/craig-merrett">aerospace engineers, like me</a>, who study and design airplanes, rockets, satellites, helicopters and space capsules. Our job is to make sure that flying through the air or in space is safe and reliable, by using tools and ideas from science and mathematics, like computer simulations and experiments. Because of that work, flying in an airplane is <a href="https://usafacts.org/articles/is-flying-safer-than-driving/">the safest way to travel</a> – safer than cars, buses, trains or boats. But although aerospace engineers design aircraft that are stunningly sophisticated, you might be surprised to learn there are still some details about the physics of flight that we don’t fully understand. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/577439/original/file-20240222-28-v3tjb4.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/577439/original/file-20240222-28-v3tjb4.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/577439/original/file-20240222-28-v3tjb4.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=381&fit=crop&dpr=1 600w, https://images.theconversation.com/files/577439/original/file-20240222-28-v3tjb4.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=381&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/577439/original/file-20240222-28-v3tjb4.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=381&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/577439/original/file-20240222-28-v3tjb4.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=479&fit=crop&dpr=1 754w, https://images.theconversation.com/files/577439/original/file-20240222-28-v3tjb4.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=479&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/577439/original/file-20240222-28-v3tjb4.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=479&fit=crop&dpr=3 2262w" alt="A diagram of an airplane that shows the four forces of flight." /></a><figcaption>The forces of weight, thrust, drag and lift act on a plane to keep it aloft and moving. <a class="source" href="https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/airplane-cruise-balanced-forces/">NASA</a></figcaption></figure> <h2>May the force(s) be with you</h2> There are <a href="https://www.nasa.gov/stem-content/four-forces-of-flight/#:%7E">four forces</a> that aerospace engineers consider when designing an airplane: weight, thrust, drag and lift. Engineers use these forces to help design the shape of the airplane, the size of the wings, and figure out how many passengers the airplane can carry. For example, when an airplane takes off, the thrust must be greater than the drag, and the lift must be greater than the weight. If you watch an airplane take off, you’ll see the wings change shape using flaps from the back of the wings. The flaps help make more lift, but they also make more drag, so a powerful engine is necessary to create more thrust. When the airplane is high enough and is cruising to your destination, lift needs to balance the weight, and the thrust needs to balance the drag. So the pilot pulls the flaps in and can set the engine to produce less power. That said, let’s define what force means. According to <a href="https://ca.pbslearningmedia.org/resource/4079abf0-7a4b-4f49-80ad-c69cd06a80f9/newtons-second-law-of-motion/">Newton’s Second Law</a>, a force is a mass multiplied by an acceleration, or F = ma. A force that everyone encounters every day is <a href="https://spaceplace.nasa.gov/what-is-gravity/en/#:%7E">the force of gravity</a>, which keeps us on the ground. When you get weighed at the doctor’s office, they’re actually measuring the amount of force that your body applies to the scale. When your weight is given in pounds, that is a measure of force. While an airplane is flying, gravity is pulling the airplane down. That force is the weight of the airplane. But its engines push the airplane forward because they create <a href="https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/what-is-thrust/">a force called thrust</a>. The engines pull in air, which has mass, and quickly push that air out of the back of the engine – so there’s a mass multiplied by an acceleration. According to <a href="https://www.youtube.com/watch?v=a-wh3fJRdjo">Newton’s Third Law</a>, for every action there’s an equal and opposite reaction. When the air rushes out the back of the engines, there is a reaction force that pushes the airplane forward – that’s called thrust. As the airplane flies through the air, the shape of the airplane pushes air out of the way. Again, by Newton’s Third Law, this air pushes back, <a href="https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/what-is-drag/#:%7E">which leads to drag</a>. You can experience something similar to drag when swimming. Paddle through a pool, and your arms and feet provide thrust. Stop paddling, and you will keep moving forward because you have mass, but you will slow down. The reason that you slow down is that the water is pushing back on you – that’s drag. <h2>Understanding lift</h2> <a href="https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/what-is-lift/">Lift</a> is more complicated than the other forces of weight, thrust and drag. It’s created by the wings of an airplane, and the shape of the wing is critical; that shape is <a href="https://howthingsfly.si.edu/media/airfoil#:%7E">known as an airfoil</a>. Basically it means the top and bottom of the wing are curved, although the shapes of the curves can be different from each other. As air flows around the airfoil, <a href="https://www.youtube.com/watch?v=UO75jDwGCdQ">it creates pressure</a> – a force spread out over a large area. Lower pressure is created on the top of the airfoil compared to the pressure on the bottom. Or to look at it another way, air travels faster over the top of the airfoil than beneath. Understanding why the pressure and speeds are different on the top and the bottom is <a href="https://airandspace.si.edu/multimedia-gallery/lift-and-copjpg">critical to understand lift</a>. By improving our understanding of lift, engineers can design more fuel-efficient airplanes and give passengers more comfortable flights. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/579698/original/file-20240304-24-6df49v.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/579698/original/file-20240304-24-6df49v.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/579698/original/file-20240304-24-6df49v.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=385&fit=crop&dpr=1 600w, https://images.theconversation.com/files/579698/original/file-20240304-24-6df49v.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=385&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/579698/original/file-20240304-24-6df49v.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=385&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/579698/original/file-20240304-24-6df49v.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=484&fit=crop&dpr=1 754w, https://images.theconversation.com/files/579698/original/file-20240304-24-6df49v.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=484&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/579698/original/file-20240304-24-6df49v.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=484&fit=crop&dpr=3 2262w" alt="A diagram that shows how the airfoil of a plane works." /></a><figcaption>Note the airfoil, which is a specific wing shape that helps keep a plane in the air. <a class="source" href="https://www.gettyimages.com/detail/illustration/how-airplanes-fly-royalty-free-illustration/1401215523?phrase=airfoil+diagram&adppopup=true">Dimitrios Karamitros/iStock via Getty Images Plus</a></figcaption></figure> <h2>The conundrum</h2> The reason why air moves at different speeds around an airfoil remains mysterious, and <a href="https://www.scientificamerican.com/video/no-one-can-explain-why-planes-stay-in-the-air/">scientists are still investigating</a> this question. Aerospace engineers have measured these pressures on a wing in both wind tunnel experiments and during flight. We can create models of different wings to predict if they will fly well. We can also change lift by changing a wing’s shape to create airplanes that fly for long distances or fly very fast. Even though we still don’t fully know why lift happens, aerospace engineers work with mathematical equations that recreate the different speeds on the top and bottom of the airfoil. Those equations describe a process <a href="https://howthingsfly.si.edu/media/circulation-theory-lift">known as circulation</a>. Circulation provides aerospace engineers with a way to model what happens around a wing even if we do not completely understand why it happens. In other words, through the use of math and science, we are able to build airplanes that are safe and efficient, even if we don’t completely understand the process behind why it works. Ultimately, if aerospace engineers can figure out why the air flows at different speeds depending on which side of the wing it’s on, we can design airplanes that use less fuel and pollute less.  <a href="https://theconversation.com/profiles/craig-merrett-1509278">Craig Merrett</a>, Professor of Mechanical and Aerospace Engineering, <a href="https://theconversation.com/institutions/clarkson-university-4276">Clarkson University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/how-do-airplanes-fly-an-aerospace-engineer-explains-the-physics-of-flight-222847">original article</a>. </div>

Travel Tips

The one in-flight activity to avoid to conquer jet lag

While many people love to travel and explore new destinations, there’s no doubt that the worst part of a holiday is often the long-haul flight. With many holidays, especially ones overseas, a drastic change of timezones can mean jet lag is unavoidable, but there are a few things you can do to make life easy when you land. According to one travel expert, how you feel when you disembark often boils down to your in-flight activities. Sarah Built, who has worked up a lifetime of long-haul travel as the Etihad Airways Vice President of Sales for Australasia, told <a href="https://travel.nine.com.au/latest/flight-tips-how-to-avoid-jet-lag/db8fbda1-2318-44c0-b9fe-e14d11dec70c">9Travel</a> that there is one thing she always avoids onboard in order to land at her destination feeling fresh: alcohol. "Whilst the allure of coffee, cocktails and snacks is real (particularly if you're travelling with kids), they can actually contribute to dehydration and worsen jet lag," she says. Instead of that in-flight beer glass of wine, Sarah says to drink water (with lime added for a twist) or herbal tea to boost your hydration and lessen that groggy mid-flight feeling. Drinking water is obviously also the key to staying hydrated, as Sarah says it's important to start drinking extra water the day before your flight, so you're going in prepared. "I carry a reusable water bottle to keep fluids up during the journey (most airports will have water stations for you to refill easily)," she says, which means you won't need to pay for an overpriced bottle at the airport. "Dehydration can cause headaches and fatigue, and you want to be able to hit the ground running on arrival, so always remember to drink plenty of water," she advises. Image credits: Shutterstock

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The travel hack giving travellers two holidays in one

Readers response: What airline will you always prefer to travel with?

Travel experts share their go-to hacks to transform your holiday

New rules for Aussies travelling to Europe in 2025

Readers response: What’s your favourite travel memory with your children?

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