Joint Helicopter Command Flying Station Aldergrove or more simply JHC FS Aldergrove is located 4.4 miles (7.1 km) south of Antrim, Northern Ireland and 18 miles (29 km) northwest of Belfast and adjoins Belfast International Airport. It is sometimes referred to simply as Aldergrove which is the name of a nearby hamlet. The military flying units share the Aldergrove runways but have their own separate facilities and helipad. The site was formerly RAF Aldergrove, a Royal Air Force station which was in operation between 1918 and 2009.