RAF Alconbury is an active Royal Air Force station in Cambridgeshire

Cambridgeshire

Cambridgeshire is a county in England, bordering Lincolnshire to the north, Norfolk to the northeast, Suffolk to the east, Essex and Hertfordshire to the south, and Bedfordshire and Northamptonshire to the west...

, England. The airfield is adjacent to the Stukeleys [Great and Little] and located about 5 miles (8 km) northwest of Huntingdon

Huntingdon

Huntingdon is a market town in Cambridgeshire, England. The town was chartered by King John in 1205. It is the traditional county town of Huntingdonshire, and is currently the seat of the Huntingdonshire district council. It is known as the birthplace in 1599 of Oliver Cromwell.-History:Huntingdon...

; about 60 miles (96.6 km) north of London.

Opened in 1938, it is currently a non-flying facility under the control of the United States Air Force

United States Air Force

The United States Air Force is the aerial warfare service branch of the United States Armed Forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on September 18, 1947 under the National Security Act of...

. It is one of three RAF stations in Cambridgeshire

Cambridgeshire

Cambridgeshire is a county in England, bordering Lincolnshire to the north, Norfolk to the northeast, Suffolk to the east, Essex and Hertfordshire to the south, and Bedfordshire and Northamptonshire to the west...

 currently used by the United States Air Forces in Europe

United States Air Forces in Europe

The United States Air Forces in Europe is the United States Air Force component of U.S. European Command, a Department of Defense unified command, and is one of two Air Force Major Commands outside of the continental United States, the other being the Pacific Air Forces...

 (USAFE). Alconbury, along with RAF Molesworth

RAF Molesworth

RAF Molesworth is a Royal Air Force station located near Molesworth, Cambridgeshire, United Kingdom with a history dating back to 1917.Its runway and flight line facilities were closed in 1973 and demolished to support ground-launched cruise missile operations in the early 1980s...

 and RAF Upwood

RAF Upwood

RAF Upwood was a United States Air Force installation adjacent to the village of Upwood, Cambridgeshire in the United Kingdom.It is a non-flying station which was under the control of the United States Air Force, and one of three RAF stations in Cambridgeshire currently used by the United States...

 are considered the "Tri-Base Area" due to their close geographic proximity, and interdependency.