The average train between Heathrow Terminal 3 and Watford takes 1h 15m and the fastest train takes 1h 8m. The train runs at least 3 times per hour from Heathrow Terminal 3 to Watford. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run every 20 minutes between Heathrow Terminal 3 and Watford. The earliest departure is at 7:17 AM in the morning, and the last departure from Heathrow Terminal 3 is at 7:47 PM which arrives into Watford at 8:58 PM. All services require a transfer at London Paddington and take an average of 1h 15m. The schedules shown below are for the next available departures.


1h 11m • 2 changes


1h 9m • 2 changes


1h 11m • 2 changes


1h 11m • 2 changes
Want to know about travelling from Heathrow Terminal 3 to Watford? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct train from Heathrow Terminal 3 to Watford. However, there are services departing from Heathrow Terminal 3 station and arriving at Watford station via London Paddington. The journey, including transfers, takes approximately 1h 15m.
Heathrow Terminal 3 to Watford train services, operated by Heathrow Express, depart from Heathrow Terminals 2 & 3 station.
Heathrow Terminal 3 to Watford train services, operated by Heathrow Express, arrive at Watford High Street station.
Book your Heathrow Terminal 3 to Watford train tickets online with Heathrow Express, London Underground (Tube) and London Overground.
The distance between Heathrow Terminal 3 and Watford is 20.7 km. The road distance is 48 km.
You can take a train from Heathrow Terminals 2 & 3 to Watford High Street via London Paddington, Paddington station, Queen's Park station, and Queens Park (London) in around 1h 9m.