Use the Heathrow Connect rail shuttle for a convenient transfer between terminals. Trains run approximately every 30 minutes and the journey takes about six minutes. Please ensure you board the correct train, as Heathrow Express services also serve Terminal 5 and London Paddington.
Heathrow Central is between Terminals 1 and 3, which are a few minutes' walk away via underground walkways and signposted from the platforms. The Terminal 4 rail station is in the basement of the terminal and linked to check-in and arrivals by lifts and escalators.
Alternatively, the 555 bus runs every 19 minutes between the terminals. The transfer is free and buses stop close to the terminals.
Use the Heathrow Connect rail shuttle for a convenient transfer between terminals. Trains run approximately every 30 minutes and the journey takes about six minutes. Please ensure you board the correct train, as Heathrow Express services also serve Terminal 5 and London Paddington.
Heathrow Central is between Terminals 1 and 3, which are a few minutes' walk away via underground walkways and signposted from the platforms. The Terminal 4 rail station is in the basement of the terminal and linked to check-in and arrivals by lifts and escalators.
Alternatively, the 555 bus runs every 19 minutes between the terminals. The transfer is free and buses stop close to the terminals.
http://www.heathrowairport.com/static/Heathrow/Downloads/PDF/Heathrow_T4_Map.pdf