The average train between Cardiff and Hounslow takes 2h 17m and the fastest train takes 2h 5m. There is an hourly train service from Cardiff to Hounslow. 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 Cardiff and Hounslow. The earliest departure is at 5:07 AM in the morning, and the last departure from Cardiff is at 9:20 PM which arrives into Hounslow at 11:30 PM. All services require a transfer, and take on average 2h 17m. The schedules shown below are for the next available departures.

2h 12m • 1 change

2h 21m • 1 change

2h 12m • 1 change

2h 12m • 1 change

2h 34m • 1 change

2h 7m • 1 change

2h 17m • 1 change

2h 19m • 1 change

2h 34m • 1 change

2h 7m • 1 change

2h 17m • 1 change

2h 19m • 1 change
Want to know about travelling from Cardiff to Hounslow? 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 Cardiff to Hounslow. However, there are services departing from Cardiff station and arriving at Hounslow station via London Paddington. The journey, including transfers, takes approximately 2h 17m.
Cardiff to Hounslow train services, operated by Great Western Railway (GWR), depart from Cardiff Central station.
Cardiff to Hounslow train services, operated by Great Western Railway (GWR), arrive at London Paddington station.
Book your Cardiff to Hounslow train tickets online with Great Western Railway (GWR) and Elizabeth Line (TfL).
The distance between Cardiff and Hounslow is 195.2 km. The road distance is 247 km.
Great Western Railway (GWR) operates a train from Cardiff Central to London Paddington hourly. Tickets cost £60–120 and the journey takes 2h 19m.