The average train between Harrow and Swansea takes 3h 35m and the fastest train takes 3h 16m. There is a train service every few hours from Harrow 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 Harrow and Swansea. The earliest departure is at 6:11 AM in the morning, and the last departure from Harrow is at 11:56 PM which arrives into Swansea at 9:02 AM. All services require a transfer at Paddington station and take an average of 3h 35m. The schedules shown below are for the next available departures.

3h 22m • 1 change

3h 18m • 1 change

3h 16m • 1 change

3h 22m • 1 change

3h 22m • 1 change

3h 18m • 1 change

3h 16m • 1 change

3h 22m • 1 change

3h 22m • 1 change

3h 18m • 1 change

3h 16m • 1 change

3h 22m • 1 change
Want to know about travelling from Harrow 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 Harrow to Swansea. However, there are services departing from Harrow station and arriving at Swansea station via Swansea. The journey, including transfers, takes approximately 3h 35m.
Harrow to Swansea train services, operated by London Underground (Tube), depart from London Paddington station.
Harrow to Swansea train services, operated by London Underground (Tube), arrive at Swansea station.
Book your Harrow to Swansea train tickets online with London Underground (Tube) and Great Western Railway (GWR).
The distance between Harrow and Swansea is 249.1 km. The road distance is 319 km.
Great Western Railway (GWR) operates a train from London Paddington to Swansea hourly. Tickets cost £85–160 and the journey takes 3h.