ADVICEAir-travel tips for plus-sized people: 9 ways to make your flight more pleasantUSA TODAYFlying is a pain for almost everyone but it can be even more of a drag for plus-sized passengers. Over the years, SmarterTravel.com has collected a list of air-travel hacks for heavier travelers, ranging from seat selection to packing tips. Click forward to read their suggestions.Lacheev, Getty Images/iStockphotoPut a change of clothes in your carry-on. If you check luggage and it doesn’t show up at your destination, airlines may give you funds to buy replacement items, or reimburse you later. That’s great, except when you’re somewhere where plus-sized clothing isn’t readily available. If you do need to check a bag, be sure to tuck some essentials in your carry-on bag, key items like a pair of underwear and a change of clothes. You’ll be ready to go explore upon arrival, despite an AWOL bag.Bymuratdeniz, Getty Images/iStockphotoConsider taking advantage of pre-boarding – especially if your seat is in the back of the plane and you anticipate needing extra time to get settled.Izusek/Getty ImagesArrive at the airport early. I have no interest in trying to sprint through an airport like a gazelle to catch my flight. Plan your arrival time well, so that you have at least an hour of chill time before you have to board your flight. You can move at your own speed – whatever that is – through security and on to your gate.Stock_colors, Getty Images/iStockphotoHit the airport restroom right before boarding your flight. It will save you from having to visit those coffin-sized airplane bathrooms.SkyNext, Getty Images/iStockphotoBefore booking, check with your airline about 'comfort seat' rules. In the U.S., most airlines require that you be able to lower both armrests and buckle up your seatbelt (using one extender) or else you'll be required to buy a second seat. But if you have any doubts or concerns, talk to a customer service agent.Bring your own seatbelt extender: Sometimes standard seatbelts aren’t long enough to be secured safely and comfortably. Airlines always have a few seatbelt extenders available for the asking; however, not all flight attendants are sensitive in their delivery. Save the hassle and bring your own. (You can buy one on Amazon.)MediaProduction, Getty Images/iStockphotoChoose the airlines and aircraft with the widest standard economy seats. Fewer and fewer airlines seem to subscribe to the standard width of 18 inches, JetBlue and Frontier flights that use Airbus planes do, according to AirFareWatchdog.com.Pidjoe/Getty ImagesResearch premium economy seats.You might want to get extra legroom by booking the emergency row, but be aware that armrests in these rows cannot be raised. Purchasing a premium economy seat might do the trick.Asiandelight/Getty Images/iStockphotoConsider splurging on first-class or business seats. In most cases, the armrests on these seats can't be lifted either but the roomier seat means you may not need them to.Aureliy, Getty Images/iStockphotoBe extra kind to your seatmates.Your row might be a bit snugger than some others on your flight. And it’s hard to endure a huffy seatmate who resents your very existence. Smile, say hello and introduce yourself to your fellow passengers. It’s tougher to be nasty to you if you’re sweet as pie.Image Source/Getty ImagesKeep cooling items in your carry on. Plus-sized folks tend to run a bit hotter. Keep your cool by packing a facial mist, pre-moistened towelettes, or a fan. Or try a neck wrap like Kafka’s Cool Tie. Filled with polymer crystals that activate when wet, it keeps you comfy via cooling evaporative action.Catalin205, Getty Images/iStockphotoGet up and stretch – it could save your life. Obese people are six times more likely to develop deep vein thrombosis (DVT), a potentially deadly condition caused by sitting for extended periods of time, especially on long-haul flights. Ask your doctor about the risk before flying. Once onboard, head DVT off at the pass by getting up every two to three hours to stretch, plus flexing toes, rotating ankles, and doing calf stretches while seated.Hailshadow/Getty Images/iStockphoto