[] a person who uses a particular airline a lot, especially sb who belongs to a club which allows them to receive free flights or special advantages from the airline 飞行常客（指多次乘坐某航空公司飞机的乘客，尤指这家航空公司的会员，可以获得免费机票或特别优惠）◆A free transfer service is available to our frequent flyers. 我们公司的飞行常客可以获得免费中转服务。◆Earn frequent-flyer miles each time you fly. 每次乘机都能获得飞行常客奖励里程。