London Heathrow Airport
One of the most popular airports in the world, you can get to London Heathrow Airport easily from Watford Junction station.
From Watford Junction, just jump on the coach link outside. The 724 Green Line service takes just 45 minutes and runs every hour. Get bus timetable information. Alternatively, you can go to London Euston station and take the tube (Victoria and the Piccadilly line) directly into terminals 2,3 & 4.
Check flight arrivals and departures at www.heathrow.com