What do you call people who travel in a plane?
I know "passenger" is appropriate but that is also true for travelling in taxis, trains, ships, and buses. Also, a passenger suggests someone who has paid for their ticket and is already seated.
Is there an expression, phrase or single-word that describes people who frequently travel by plane, be it for business or pleasure? Would flight traveller or plane traveller be easily understood?
Sample sentence:
Sixty years ago, no _________ would have believed a flight to a European city could cost less than a return trip by train.
P.S I found the answer (it was among my suggestions) but I liked the question too much to delete it.