noun
multi-city flight; open-jaw itinerary
Travel industry term for a flight itinerary that includes multiple destinations, not a simple round trip. Often used when booking flights that arrive in one city and depart from another, or that include several stops.
自由旅程で東京、大阪、福岡を回る航空券を予約した。
I booked a multi-city flight ticket visiting Tokyo, Osaka, and Fukuoka.
この旅行代理店では自由旅程のプランも扱っています。
This travel agency also handles open-jaw itinerary plans.
Compound of 自由 (free, unrestricted) and 旅程 (itinerary, journey). The term appears to be a modern coinage used in the travel industry to describe flexible, multi-stop flight bookings.