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From Merthyr Tydfil to London, take the fastest train in 3 hours 11 minutes, typically 3 hours 30 minutes. Daily, 13 trains depart from Merthyr Tydfil, with the first at 09:39 and the last at 21:39. During Off-Peak times starting at 09:30 on weekdays, enjoy a quieter space with fewer people. Check real-time updates for train times, delays, and cancellations. We save you time, effort, and money.
| Departs | Arrives | Operator | ||
|---|---|---|---|---|
10:39 | 3 hours 30 minutes, 1 change | 14:09 | Transport for Wales | Find tickets |
11:39 | 3 hours 30 minutes, 1 change | 15:09 | Transport for Wales | Find tickets |
12:39 | 3 hours 30 minutes, 1 change | 16:09 | Transport for Wales | Find tickets |
13:39 | 3 hours 30 minutes, 1 change | 17:09 | Transport for Wales | Find tickets |
14:39 | 3 hours 30 minutes, 1 change | 18:09 | Transport for Wales | Find tickets |
Travelling by train from Merthyr Tydfil to London is efficient and offers a scenic and comfortable experience. With frequent departures from Merthyr Tydfil, you can reach London in just 3 hours 11 minutes, making it one of the fastest and most convenient ways to travel between these two places.

The fastest train journey time from Merthyr Tydfil to London is 3 hours 11 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 Merthyr Tydfil to London. 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 Merthyr Tydfil to London 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 Merthyr Tydfil to London 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.
Usually, you need to arrive at a station at least 15-20 minutes ahead of time. However, consider the station's size and your familiarity with it. If the station is large and you are not familiar with it, leaving home as early as possible is the best choice. This can reduce your stress and ensure a relaxing journey.
Yes, most trains on the Merthyr Tydfil to London route offer amenities like Wi-Fi, food services, and various seating options. Additional facilities may include power sockets, accessibility features, and luggage storage. Check the specific amenities offered by the train operator when booking, as these can vary.
Make use of our Train Journey Planner for detailed transfer information, ensuring your journey is smooth and efficient, saving you valuable time and effort, and allowing you to rest completely for your travels.

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€25.93
€38.90
Trainpal makes it easy to handle travel changes, ticket refunds, and Delay Repay requests.


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.