HEATHROW AIRPORT LOCATION:Make sure you know which terminal to go to before setting out. Terminals 1, 2 and 3 are quite close together in the centre of Heathrow and are reached via the following motorways: M4 Junction 4 M25 Junction 15 A4 (local road) Terminal 4 is on the south side of Heathrow and is reached via the following motorways: M4 Junction 3 M25 Junction 14 A30 (local road) The Department of Transport has an information hotline number to help you plan your journey and to arrive at the airport in plenty of time. Call +44 (0)1234 276376. CAR PARKING Airport Parking UK Secure Park and Fly || Other Airports ||