Heathrow Terminals 1, 2, 3 can refer to the following: Terminals at London Heathrow Airport Terminal 1 Terminal 2 Terminal 3 Transit stations Heathrow Terminals 1, 2, 3 tube station, serving the Piccadilly line of the London Underground Heathrow Terminals 1, 2 and 3 railway station, serving Heathrow Express and Heathrow Connect