Short-haul Long-haul fligh

Short-haul flights
A short-haul flight is defined by Thomas Cook Airlines as a flight under 3 hours in length.

Long-haul flights
Long-haul flights are journeys typically made by wide-body aircraft that involve long distances, typically beyond six and a half hours in length, and often are non-stop flights. On some long-haul flights, jet airliners refuel in order to reach the destination

http://en.wikipedia.org/wiki/Flight_length