And here's what to do if you find yourself at one of them.
VisaGuide.World - an online information guide to worldwide visas - recently released a list of the world's most stressful airports. And guess who's at the top? London's Gatwick.
In fact, half the entries on the 10-strong list are European, with Turkey's Istanbul Airport at number 2; Germany's Munich Airport at number 3; another London haunt, Heathrow, at number 5; and Rome-Fiumicino International Airport at number 7. But Explore is here to help if you're heading to any of these airports this year.
Here are the two most common things that can go wrong and what you can do to alleviate the stress.
1. Missed flights: "Always leave enough time to go through security, or make your connection if there's a layover," says Compare the Market's head of travel insurance, Warren Duke.
2. Lost luggage: "Flag it with the airline before you leave the airport and see if there's any compensation they could provide, and contact your insurance provider ASAP," says Duke.
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