Terminal 4

Heathrow Terminal 4 is an airport terminal at Heathrow Airport, the main airport serving London, England, situated to the south of the southern runway, next to the cargo terminal. It is connected to Heathrow Terminals 2 and 3 by the vehicular Heathrow Cargo Tunnel, and by rail with the Heathrow Terminal 4 tube and Heathrow Terminal 4 railway stations.

Built at a cost of £200 million, Terminal 4 was opened by the Prince and Princess of Wales on 1 April 1986. Until 2008 it was used mainly by British Airways. It became the Heathrow base for airlines of the SkyTeam airline alliance after British Airways vacated Terminal 4 on 29 October 2009 and moved to Terminal 5.