The average train between Cardiff and Radlett takes 2h 51m and the fastest train takes 2h 37m. There is an hourly train service from Cardiff to Radlett. 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 Radlett. 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 Radlett at 12:26 AM. All services require a transfer at London Paddington and take an average of 2h 51m. The schedules shown below are for the next available departures.


2h 47m • 2 changes


2h 43m • 2 changes


2h 37m • 2 changes


2h 49m • 2 changes


3h 3m • 2 changes


2h 47m • 2 changes


2h 52m • 2 changes


2h 54m • 2 changes


3h 3m • 2 changes


2h 47m • 2 changes


2h 52m • 2 changes


2h 54m • 2 changes
Want to know about travelling from Cardiff to Radlett? 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 Radlett. However, there are services departing from Cardiff station and arriving at Radlett station via London Paddington. The journey, including transfers, takes approximately 2h 51m.
Cardiff to Radlett train services, operated by Great Western Railway (GWR), depart from Cardiff Central station.
Cardiff to Radlett train services, operated by Great Western Railway (GWR), arrive at London Paddington station.
Book your Cardiff to Radlett train tickets online with Great Western Railway (GWR), Elizabeth Line (TfL) and Thameslink.
The distance between Cardiff and Radlett is 199.1 km. The road distance is 264 km.
Great Western Railway (GWR) operates a train from Cardiff Central to London Paddington hourly. Tickets cost £60–130 and the journey takes 2h 21m.