For many years, going to the airport in the United States has meant trudging through dark and low-ceilinged terminals, crowding in dreary security checkpoints and throwing elbows to secure one of the few power outlets at the gate.

“A bus depot is not a great way to describe it, but that’s kind of the methodology that a lot of American passengers saw,” said Ty Osbaugh, an architect who helps lead the aviation practice at the architecture firm Gensler.