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From Cardiff to London, take the fastest train in 1 hour 49 minutes, typically 1 hour 55 minutes. Daily, 36 trains depart from Cardiff, with the first at 05:07 and the last at 23:30. 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 | ||
|---|---|---|---|---|
17:20 Cardiff Central | 1 hour 50 minutes, Direct | 19:10 London Paddington | Great Western Railway | Find tickets |
18:20 Cardiff Central | 1 hour 49 minutes, Direct | 20:09 London Paddington | Great Western Railway | Find tickets |
18:25 Cardiff Central | 2 hours 44 minutes, 1 change | 21:09 London Paddington | Great Western Railway | Find tickets |
19:20 Cardiff Central | 1 hour 54 minutes, Direct | 21:14 London Paddington | Great Western Railway | Find tickets |
20:20 Cardiff Central | 1 hour 54 minutes, Direct | 22:14 London Paddington | Great Western Railway | Find tickets |
Plan your journey from Cardiff to London with ease. Explore the first and last train times, departure and arrival stations, distance, journey time, and price options to make the most of your trip.
When travelling from Cardiff to London, check the TrainPal Train Journey Planner. The average journey time is 1 hour 49 minutes, covering 131 miles (210km). There are 36 trains available each day, from the first departure at 05:07 to the last at 23:30.
The quickest train from Cardiff to London departs from Cardiff Central, located in the city centre. Cardiff Central is a major rail hub, connecting destinations across Wales and the UK. It serves as a key interchange for the Valleys & Cardiff Local Routes and is accessible by bus, taxi, or car.
Primary operators at Cardiff Central include Transport for Wales, Great Western Railway, and CrossCountry, linking cities such as Swansea, Newport, Bangor, Manchester, Birmingham, Nottingham, and Newcastle.
Stops on this route typically include Newport(South Wales), Bristol Parkway, Swindon(Wilts), and Reading, but may vary by time and operator.
The fastest train from Cardiff to London arrives at London Paddington, a major railway and Underground station at Praed Street, Paddington, London W2 1HQ. Key operators include Great Western Railway, Elizabeth Line, and Heathrow Express.
This station is a crucial transport hub, offering services to Heathrow Airport and destinations in the west of England and Wales, such as Bristol Temple Meads, Exeter St Davids, and Oxford.
London Paddington connects directly to the Bakerloo, Circle, District, and Hammersmith & City lines. Nearby attractions include The Savoy, the London Eye, The Regent’s Park, and the Royal Albert Hall.
Great Western Railway trains from Cardiff Central to London Paddington take around 1 hour and 49 minutes. The journey offers breathtaking views of South Wales' rolling hills, the scenic Cotswolds countryside, and the delightful outskirts of London.
Great Western Railway, an iconic British railway, connects London to cities like Bristol, Cardiff, and Exeter. For over 180 years, GWR has been celebrated for its exceptional service, reliability, and passenger comfort. Experience seamless travel across South West England and Wales with GWR.
In Standard Class on the GWR, passengers benefit from family-sized tables, power sockets, and plenty of space for luggage.
GWR offers free refreshments, improved Wi-Fi, and power socket-equipped tables at your spacious seat.
We deliver essential travel info, such as baggage limits, bike policies, travelling with children and pets, and assistance services.
Travelling by train from Cardiff to London is efficient and offers a scenic and comfortable experience. With frequent departures from Cardiff, you can reach London in just 1 hour 49 minutes, making it one of the fastest and most convenient ways to travel between these two places.

The quickest train journey from Cardiff to London takes 1 hour 49 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 Cardiff to London. 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.

Cardiff to London trains are generally punctual, but delays or cancellations can occur due to weather, strikes, and other factors. After purchasing a ticket, use TrainPal to track live train updates. Before buying a ticket, our Train Journey Planner provides all necessary booking information. Simply enter your departure and arrival stations, click 'Search,' and view routes labelled 'Cheapest' or 'Fastest,' with all details displayed.
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.
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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.

Get easy and quick access to live updates and notifications via the TrainPal app. If your phone is enabled to receive messages from us, you'll receive notifications about train cancellations on your screen as soon as you pick up your phone
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Starting a smooth journey can sometimes be challenging, but Trainpal is here to help!


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