In recent years, airlines have been cramming more seats onto planes and squishing passengers ever closer to one another. The entire airport experience isn't much better, with overcrowded eateries and bookshops, as well as tightly packed lines of people queuing up at check-in counters, at security checkpoints and on the jet bridge for boarding.
But that's not the case anymore.
"Airports are empty. The flights are empty," said physician Frank Garcini after stepping off a recent flight from Phoenix at Chicago's O'Hare International Airport.