The term "Partner Flight" refers to a flight that is operated by two or more airlines, in partnership with each other. This means that multiple carriers come together and offer their services under one ticket for passengers traveling between different cities. The partner airlines share the routes, aircrafts, and resources to provide seamless connectivity and convenience to customers. Passengers can enjoy benefits such as joint frequent flyer programs, shared lounges, and coordinated schedules when they book a "Partner Flight."