In aviation, the flight length or flight distance refers to the distance of a flight. Aircraft do not necessarily follow the great-circle distance, but may opt for a longer route due to weather, traffic, to utilise a jet stream, or to refuel.

The Loganair Westray to Papa Westray route is the shortest scheduled passenger flight in the world. Flights on the route are scheduled for one and a half minutes, and actual flying time is closer to one minute. The record for the fastest flight is 53 seconds. The route is flown by Loganair, a Scottish regional airline that serves Scotland's Highlands and islands. It is also part of a connector flight that links the island of Westray and the town of Kirkwall, the central and most populous town of the Orkney Islands.