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Travelling from Heathrow Terminal 5 to Cardiff, the fastest train takes 2 hours 20 minutes with an average travel time of 2 hours 40 minutes. 99 trains are running daily, with the first departing at 00:07 and the last at 23:57. Stay updated with live train status, times, delays, and cancellations on TrainPal.
| Departs | Arrives | Operator | ||
|---|---|---|---|---|
09:12 Heathrow Terminal 5 | 2 hours 28 minutes, 1 change | 11:40 Cardiff Central | Heathrow Express | Find tickets |
09:20 Heathrow Terminal 5 | 2 hours 50 minutes, 2 change | 12:10 Cardiff Central | Elizabeth line | Find tickets |
09:27 Heathrow Terminal 5 | 2 hours 43 minutes, 1 change | 12:10 Cardiff Central | Heathrow Express | Find tickets |
09:40 Heathrow T5 Bus | 2 hours 30 minutes, 1 change | 12:10 Cardiff Central | Great Western Railway | Find tickets |
09:50 Heathrow Terminal 5 | 2 hours 47 minutes, 2 change | 12:37 Cardiff Central | Elizabeth line | Find tickets |
The train journey from Heathrow Terminal 5 to Cardiff combines efficiency with pleasure, featuring beautiful scenery and comfort. With frequent departures from Heathrow Terminal 5, you can get to Cardiff in just 2 hours 20 minutes, making it an ideal and convenient choice for travelling between them.

The quickest train journey from Heathrow Terminal 5 to Cardiff takes 2 hours 20 minutes . Utilise our Train Journey Planner to locate direct trains, minimise transfers, and compare travel times across various routes. Discover the most efficient way to travel with fewer stops for a smooth and seamless journey.
No, you will need to transfer when travelling from Heathrow Terminal 5 to Cardiff. TrainPal Train Journey Planner will assist you in finding the best train route. Enter the origin or destination places and other relevant details, then click "Search" to find the most suitable route.

While Heathrow Terminal 5 to Cardiff 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 Heathrow Terminal 5 to Cardiff 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 Heathrow Terminal 5 to Cardiff 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.
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.

Checking train delays and cancellations in the UK is simple. Utilise the TrainPal mobile app for real-time information. We offer live updates, including live train status and notifications of any train strikes.
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Trainpal helps you handle travel changes, refunds, and Delay Repay requests effortlessly.


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.