Compensation and refunds
With Trainpal, managing your travel is simple. We assist with itinerary changes, ticket refunds, and Delay Repay.


If you find trains for a cheaper price elsewhere, let us know and we'll refund the difference*

Save more with a variety of promo codes. Book on the TrainPal app with no booking fees.

24/7 fast customer service with prompt responses to your queries

Seamless rail travel with easy changes and refunds for peace of mind.
Journey from Cardiff to London Waterloo on the fastest train in 2 hours 25 minutes, usually 2 hours 34 minutes. Every day, 47 trains leave from Cardiff, starting at 05:07 and ending at 23:30. During Off-Peak Times from 09:30 on weekdays, enjoy a quieter and less crowded journey. Get real-time updates on train schedules, delays, and cancellations. Save time, effort, and money with us.
| Departs | Arrives | Operator | ||
|---|---|---|---|---|
05:07 | 2 hours 45 minutes, Direct | 07:52 | Great Western Railway | Find tickets |
05:54 | 2 hours 26 minutes, Direct | 08:20 | Great Western Railway | Find tickets |
06:24 | 2 hours 28 minutes, Direct | 08:52 | Great Western Railway | Find tickets |
06:28 | 3 hours 52 minutes, 1 change | 10:20 | Great Western Railway | Find tickets |
06:51 | 2 hours 36 minutes, Direct | 09:27 | Great Western Railway | Find tickets |
Taking the train from Cardiff to London Waterloo is both efficient and enjoyable, offering scenic views and comfort. With frequent departures from Cardiff, you can arrive at London Waterloo in just 2 hours 25 minutes, making it a quick and convenient option for travelling between these two places.

The fastest train journey time from Cardiff to London Waterloo is 2 hours 25 minutes . Use our Train Journey Planner to find direct trains, avoid transfers, and compare travel times for each route to see if there are fewer stops to make your journey seamless.
No, unfortunately, you need to transfer from Cardiff to London Waterloo. Still, the TrainPal Train Journey Planner helps you find the best train. Just input your origin or destination places, then click "Search" to see the suitable route.

While Cardiff to London Waterloo trains are usually on time, delays or disruptions may occur due to weather, strikes, and other factors. Finding a train timetable for your trip from Cardiff to London Waterloo is easy with Train Journey Planner. Simply enter your departure and arrival stations to get a detailed schedule of available trains. Input your travel details to discover the best routes, connections, and train times.
It’s recommended to reach the train station 15-20 minutes before your train is set to leave. This gives you sufficient time to locate your platform, particularly in larger stations. Arriving early is also beneficial if you need to collect tickets or find your way around an unfamiliar station, helping to minimise any potential stress.
k.train.uk.a2b.check.desc6
Check our Train Journey Planner, which provides detailed information about transfers to ensure your journey is uninterrupted, saving you time and effort, and allowing you to get a full rest for travelling.

Use TrainPal for quick access to live updates and notifications. If your phone allows messages from us, you'll receive instant notifications about train cancellations directly on your screen.
Family & Friends Railcard£23.67
£35.50
With Trainpal, managing your travel is simple. We assist with itinerary changes, ticket refunds, and Delay Repay.


Cheaper train tickets for less busy times. Combine with Advance fares for the best deals.
* Prices are dynamic and subject to change. Ticket prices vary based on time of day, route, and class. This pricing does not apply to discounted Split tickets and Railcards.
* By combining Advance Ticket offers with split tickets, you’ll get lower fares when you book at least one week before travel (excluding Anytime fares bought on the day of travel). Availability depends on the specific route and cannot be combined with other promotions.