Airplane Ticket
Plane Ticket
noun
An aviation (航空) ticket is the kind of ticket you need to fly on an airplane. That's an airplane ticket.
こうくうけん
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
博多までの航空券を手配してもらえますか。
Could you arrange a flight for me to Hakata?