Fairfax Municipal Airport (known as Fairfax Field during World War II) was a Kansas City, Kansas airfield from 1921 that was used during 1935–1949 by the military. Federal land adjacent to the airfield included a WWII B-25 Mitchell plant and modification center and a Military Air Transport terminal. After being used as a Cold War-era Air Force Base, it was used for airliner servicing by TWA and for automobile and jet fighter aircraft production by General Motors, which built a 1985 Fairfax Plant over runways when the municipal airport closed.