The average train between Watford and Heathrow Terminal 5 takes 1h 29m and the fastest train takes 1h 10m. The train runs at least 3 times per hour from Watford to Heathrow Terminal 5. 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 Watford and Heathrow Terminal 5. The earliest departure is at 5:13 AM in the morning, and the last departure from Watford is at 11:42 PM which arrives into Heathrow Terminal 5 at 4:59 AM. All services require a transfer at Harrow & Wealdstone and take an average of 1h 29m. The schedules shown below are for the next available departures.


1h 24m • 2 changes

1h 29m • 2 changes

1h 30m • 2 changes

1h 29m • 2 changesWant to know about travelling from Watford to Heathrow Terminal 5? 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 Watford to Heathrow Terminal 5. However, there are services departing from Watford station and arriving at Heathrow Terminal 5 station via Paddington station station. The journey, including transfers, takes approximately 1h 29m.
Watford to Heathrow Terminal 5 train services, operated by Southern, depart from Harrow & Wealdstone station.
Watford to Heathrow Terminal 5 train services, operated by Southern, arrive at Heathrow Terminal 5 station.
Book your Watford to Heathrow Terminal 5 train tickets online with Southern, London Underground (Tube) and 3 other operators.
The distance between Watford and Heathrow Terminal 5 is 21.6 km. The road distance is 52 km.
There is no direct connection from Watford to Heathrow Terminal 5. However, you can take the train to Harrow & Wealdstone, walk to Harrow & Wealdstone station, take the subway to Paddington station, walk to London Paddington, take the train to Heathrow Terminal 5, then walk to Heathrow Terminal 5.