The average train between Swansea and Radlett takes 3h 50m and the fastest train takes 3h 36m. There is a train service every few hours from Swansea to Radlett. 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 Swansea and Radlett. The earliest departure is at 3:46 AM at night, and the last departure from Swansea is at 8:23 PM which arrives into Radlett at 12:26 AM. All services require a transfer at London Paddington and take an average of 3h 50m. The schedules shown below are for the next available departures.


4h 24m • 2 changes


3h 41m • 2 changes


3h 47m • 2 changes


3h 49m • 2 changes


4h 24m • 2 changes


3h 41m • 2 changes


3h 47m • 2 changes


3h 49m • 2 changes


4h 24m • 2 changes


3h 41m • 2 changes


3h 47m • 2 changes


3h 49m • 2 changes
Want to know about travelling from Swansea to Radlett? 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 Swansea to Radlett. However, there are services departing from Swansea station and arriving at Radlett station via London Paddington. The journey, including transfers, takes approximately 3h 50m.
Swansea to Radlett train services, operated by Great Western Railway (GWR), depart from Swansea station.
Swansea to Radlett train services, operated by Great Western Railway (GWR), arrive at London Paddington station.
Book your Swansea to Radlett train tickets online with Great Western Railway (GWR), Elizabeth Line (TfL) and Thameslink.
The distance between Swansea and Radlett is 250.2 km. The road distance is 340 km.
Great Western Railway (GWR) operates a train from Swansea to London Paddington hourly. Tickets cost £85–170 and the journey takes 2h 52m.