Fergus Falls Municipal Airport (IATA: FFM, ICAO: KFFM, FAA LID: FFM), also known as Einar Mickelson Field, is a public airport located three miles (5 km) west of the central business district (CBD) of Fergus Falls, a city in Otter Tail County, Minnesota, USA. The airport covers 731 acres (296 ha) and has two runways. It is primarily used for general aviation.