Some do so of their own accord, using airport amenities to meet their basic needs. Others, however, would rather be anywhere else – and find themselves at the mercy of bureaucratic wrangling.
A vaccine may be the magic bullet, but getting travellers back in the skies will require much more — including convincing people that travel is safe again.
Over the approaching holidays, people around the world will want to travel to see friends and family. Getting tested for the coronavirus can make this safer, but testing alone is not a perfect answer.
Airlines and airports reacted quickly after 9/11 to put new procedures in place that overcame passengers' newfound fears of flying. An aviation historian explains why it may be harder to so today.
Canada's ban on foreign travellers is not consistent with the science of the pandemic or Canada's own values of inclusion and openness to outsiders.
Persistence pays off – but unless campaigners put forward an alternative, the airports will always be able to fight back.
Weaker winds and higher temperatures are making airlines less efficient.
Suspending flights and screening passengers is mainly about reassuring us, not keeping us healthy.
The aviation ambitions of several African countries are linked to Chinese investment.
The day and a half it takes to get from New York to Singapore and back offers plenty of time to ponder the economics of ultra-long-haul flights – and wonder why we'd want to make it any longer.
Turning from the conflict of airport expansions to a vision of a low-carbon transport system.
Recent advances in technology and new trends in commercial air travel could make supersonic flight economically viable. But regulations will have to change first.
Antarctica studies show sea level rise may be happening faster than we're planning for, and airports will be hit hard.
Big lines and long distances to walk have plagued airports since the dawn of the jet age. New designs and technologies haven't helped much, even if they're visually impressive.
Cheap, powerful, and more widely used by greater numbers of people, drones are causing a headache at supposedly secure locations worldwide.
If you're flying during the holidays, you may encounter some emotional support animals. The practice has ticked off many people, especially the airlines. A veterinarian looks at the issues.
If you disagree with the political slant of the network, it might color your views of others in the room – and change your behavior.
It's not as simple as just hiring more immigration officers.
The UK's alcohol problems aren't limited to high streets – so why are airports allowed to flout the rules?
Mexico City desperately needs a new airport. It also needs more green space. One landscape architect thinks the Mexican capital's new Norman Foster-designed international airport can be both.