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.

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3h 18m • 1 changeWant 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 London Paddington station and arriving at Swansea station via Swansea station. The journey, including transfers, takes approximately 3h 35m.
Harrow to Swansea train services, operated by Great Western Railway (GWR), depart from London Paddington station.
Harrow to Swansea train services, operated by Great Western Railway (GWR), arrive at Swansea station.
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The distance between Harrow and Swansea is 249.1 km. The road distance is 287 km.
Great Western Railway (GWR) operates a train from London Paddington to Swansea hourly. Tickets cost £75–150 and the journey takes 2h 48m.