The average train between Sunbury-on-Thames and Cardiff takes 3h 42m and the fastest train takes 3h 13m. There is an hourly train service from Sunbury-on-Thames to Cardiff. 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 Sunbury-on-Thames and Cardiff. The earliest departure is at 6:14 AM in the morning, and the last departure from Sunbury-on-Thames is at 11:14 PM which arrives into Cardiff at 8:40 AM. All services require a transfer at Wimbledon and take an average of 3h 42m. The schedules shown below are for the next available departures.
Arrives next day


3h 53m • 2 changes
Arrives next day


9h 22m • 2 changes
Arrives next day


9h 25m • 2 changes


3h 22m • 2 changes


3h 27m • 2 changes


3h 23m • 2 changes


3h 22m • 2 changes


3h 22m • 2 changes


3h 27m • 2 changes


3h 23m • 2 changes


3h 22m • 2 changes
Want to know about travelling from Sunbury-on-Thames to Cardiff? 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 Sunbury-on-Thames to Cardiff. However, there are services departing from Sunbury-on-Thames station and arriving at Cardiff station via Cardiff Central. The journey, including transfers, takes approximately 3h 42m.
Sunbury-on-Thames to Cardiff train services, operated by South Western Railway, depart from London Paddington station.
Sunbury-on-Thames to Cardiff train services, operated by South Western Railway, arrive at Cardiff Central station.
Book your Sunbury-on-Thames to Cardiff train tickets online with South Western Railway, London Underground (Tube) and Great Western Railway (GWR).
The distance between Sunbury-on-Thames and Cardiff is 191.6 km. The road distance is 264 km.
Great Western Railway (GWR) operates a train from London Paddington to Cardiff Central hourly. Tickets cost £65–130 and the journey takes 1h 58m.