The average train between Watford Junction and Swansea takes 4h and the fastest train takes 3h 42m. There is a train service every few hours from Watford Junction to Swansea. 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 hourly between Watford Junction and Swansea. The earliest departure is at 5:45 AM in the morning, and the last departure from Watford Junction is at 11:30 PM which arrives into Swansea at 9:02 AM. All services require a transfer at Queens Park (London) and take an average of 4h. The schedules shown below are for the next available departures.


3h 48m • 2 changes


3h 44m • 2 changes


3h 45m • 2 changes


3h 48m • 2 changes


3h 48m • 2 changes


3h 44m • 2 changes


3h 45m • 2 changes


3h 48m • 2 changes


3h 48m • 2 changes


3h 44m • 2 changes


3h 45m • 2 changes


3h 48m • 2 changes
Want to know about travelling from Watford Junction to Swansea? 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 Junction to Swansea. However, there are services departing from Watford Junction station and arriving at Swansea station via Swansea. The journey, including transfers, takes approximately 4h.
Watford Junction to Swansea train services, operated by London Overground, depart from London Paddington station.
Watford Junction to Swansea train services, operated by London Overground, arrive at Swansea station.
Book your Watford Junction to Swansea train tickets online with London Overground, London Underground (Tube) and Great Western Railway (GWR).
The distance between Watford Junction and Swansea is 244.8 km. The road distance is 331 km.
Great Western Railway (GWR) operates a train from London Paddington to Swansea hourly. Tickets cost £85–170 and the journey takes 2h 53m.