The average train between Grays and Swansea takes 4h 25m and the fastest train takes 4h 5m. There is a train service every few hours from Grays 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 Grays and Swansea. The earliest departure is at 5:24 AM in the morning, and the last departure from Grays is at 11:47 PM which arrives into Swansea at 9:02 AM. All services require a transfer at West Ham and take an average of 4h 25m. The schedules shown below are for the next available departures.


4h 22m • 2 changes
Arrives next day


4h 26m • 2 changes
Arrives next day


4h 53m • 2 changes
Arrives next day


9h 14m • 2 changes


4h 9m • 2 changes


4h 7m • 2 changes


4h 5m • 2 changes


4h 15m • 2 changes


4h 9m • 2 changes


4h 7m • 2 changes


4h 5m • 2 changes


4h 15m • 2 changes
Want to know about travelling from Grays 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 Grays to Swansea. However, there are services departing from Grays station and arriving at Swansea station via Swansea. The journey, including transfers, takes approximately 4h 25m.
Grays to Swansea train services, operated by c2c, depart from London Paddington station.
Grays to Swansea train services, operated by c2c, arrive at Swansea station.
Book your Grays to Swansea train tickets online with c2c, London Underground (Tube) and Great Western Railway (GWR).
The distance between Grays and Swansea is 295.5 km. The road distance is 345 km.
Great Western Railway (GWR) operates a train from London Paddington to Swansea hourly. Tickets cost £85–170 and the journey takes 2h 53m.