Fort Smith Regional Airport is a public use airport located near the Interstate 540 freeway three nautical miles (6 km) southeast of the central business district of Fort Smith, in Sebastian County, Arkansas, United States. FSM is governed by the Fort Smith Airport Commission as established by the City of Fort Smith, Arkansas. It serves the transportation needs of residents and businesses of western Arkansas and eastern Oklahoma. FSM is currently served by American Eagle, the regional airline affiliate of American Airlines. It has a large population of corporate and general aviation aircraft. A full-service fixed-base operator (FBO), Signature Flight Support, provides service to general aviation, airline, and military operators.