Sur le site internet de l'aéroport d'Heathrow, tu trouveras les plans des différents terminaux.Envoyé par Cemicemi
How to Transfer
Terminals 1, 2 & 3 are all located in the centre of the airport and are within walking distance of each other via underground walkways. Terminal 4 is located on the south side of the airport, and can be reached from Terminals 1, 2 & 3 via the free inter-terminal transfer service on the Heathrow Express train, which takes approximately eight minutes.