Heathrow has three basic ground transportation options to London. Heathrow Express offers fast, non-stop trains every 15 minutes between 5:03 am and 11:58 pm from Heathrow Central (Terminals 1 and 3) and Heathrow Terminal 5 to Central London for £20, with a standard return for an additional £4. London Underground is the cheapest option to Central London with standard fares costing only £5. You can catch the Underground in stations at Terminals 1, 2, 3, 4, and 5. GreenTomatoCars offer direct door-to-door service from London Heathrow, with a fixed price of about £100 for the 60 minute ride.