The average train between Cardiff and Isleworth takes 2h 40m and the fastest train takes 2h 25m. There is an hourly train service from Cardiff to Isleworth. 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 Isleworth. 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 Isleworth at 5:22 AM. All services require a transfer at London Paddington and take an average of 2h 40m. The schedules shown below are for the next available departures.


2h 36m • 2 changes


2h 38m • 2 changes


2h 36m • 2 changes


2h 38m • 2 changes


2h 40m • 2 changes


2h 34m • 2 changes


2h 36m • 2 changes


2h 36m • 2 changes


2h 25m • 2 changes


2h 37m • 2 changes


2h 37m • 2 changes


2h 37m • 2 changes
Want to know about travelling from Cardiff to Isleworth? 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 Isleworth. However, there are services departing from Cardiff station and arriving at Isleworth station via London Paddington. The journey, including transfers, takes approximately 2h 40m.
Cardiff to Isleworth train services, operated by Great Western Railway (GWR), depart from Cardiff Central station.
Cardiff to Isleworth train services, operated by Great Western Railway (GWR), arrive at London Paddington station.
The distance between Cardiff and Isleworth is 196.5 km. The road distance is 263 km.
Great Western Railway (GWR) operates a train from Cardiff Central to London Paddington hourly. Tickets cost £60–130 and the journey takes 2h 19m.