The average bus between Datchet and Cardiff takes 4h 38m and the fastest bus takes 4h 1m. There is a bus service every few hours from Datchet 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.
Buses run hourly between Datchet and Cardiff. The earliest departure is at 6:08 AM in the morning, and the last departure from Datchet is at 10:38 PM which arrives into Cardiff at 4:00 AM. All services require a transfer, and take on average 4h 38m. The schedules shown below are for the next available departures.

4h 23m • 1 change
Arrives next day

4h 57m • 1 change
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5h 22m • 1 change

4h 52m • 1 change

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4h 7m • 1 change

4h 41m • 1 change

4h 52m • 1 change

4h 52m • 1 change

4h 7m • 1 change

4h 41m • 1 change

4h 52m • 1 change

5h 5m • 1 change

4h 15m • 1 change

4h 46m • 1 change

4h 52m • 1 change

5h 5m • 1 change

4h 15m • 1 change

4h 46m • 1 change
Want to know about travelling from Datchet 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 bus from Datchet to Cardiff. However, there are services departing from Datchet station and arriving at Cardiff station via Sophia Gardens. The journey, including transfers, takes approximately 4h 38m.
Datchet to Cardiff bus services, operated by Thames Valley Buses, depart from Heathrow Terminal 5 station.
Datchet to Cardiff bus services, operated by Thames Valley Buses, arrive at Sophia Gardens station.
The distance between Datchet and Cardiff is 180.1 km. The road distance is 237 km.
National Express operates a bus from Heathrow Terminal 5 to Sophia Gardens hourly. Tickets cost £26–65 and the journey takes 3h 20m.