Previously seen trips
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Carmarthen | London Paddington | No tags | |||||
| Carmarthen | London Paddington | No tags | |||||
| Carmarthen | London Paddington | No tags | |||||
| Carmarthen | London Paddington | No tags | |||||
| Carmarthen | London Paddington | No tags |
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Compare 3 ways to go from Carmarthen to London.
Busbud recommends carpooling from Carmarthen to LondonAmong the sustainable travel choices, the carpool stands out as the good way to reach London. The journey takes about 3 hours 50 minutes and with fares starting at just $30, it presents an excellent value for a comfortable ride.
Train Carmarthen to London: Trip Overview
Please note, this information is subject to change.
Train Companies
Based on 41 reviews, the company was rated 3.9 stars on Busbud. Travelers were especially satisfied with the staff and the seats but often complained with the value for money. Great Western Railway ticket prices on this trip start at $53
Carmarthen to London Train
With Busbud, comparing and booking tickets for a train from Carmarthen to London is a breeze. Browse through an extensive selection of train fares and train schedules to find the best deals.
We make it our job to connect you with the most dependable companies that offer train service from Carmarthen to London.
From train tickets to high-end trains trip from Carmarthen to London, we offer a wide range of train services to best suit your needs depending on how much your budget is.
Frequently asked questions for your trip Carmarthen - London
Find cheapest prices for trains
Price is for a one-way ticket for one passenger and based on past searches.
The cheapest trip from Carmarthen to London was searched and found on Sep 24, 2025 with a price of $50To save money and be sure you have the best seat, it's a good idea to buy your train tickets from Carmarthen to London, as early as possible.
You can expect to pay from $50 to $197 for a train ticket from Carmarthen to London based on the last 2 days. You can expect to find the cheapest price for the trip at $50 which is on 2025-09-24.
About Train Travel
Train Travel Tips
Taking the fastest trains allows you to travel at speeds greater than 300 km/h. Taking a trip from Carmarthen to London is not only much quicker but more comfortable too! You can usually travel directly to the city centre and save time while you're at it.
Whether you take a regional or high-speed train to London, you’ll help reduce the environmental impact and carbon footprint of your trip. As you watch the landscapes unfold before your eyes, you can tell yourself that with this choice, you are making sure they remain protected.
The train emits up to 30x less CO2 for a trip between Carmarthen and London compared to the same trip made by plane or car. A truly ecological mode of transport that will allow you to easily reduce your carbon footprint.
Tune out to the fine sounds of your best music playlist on your train trip from Carmarthen to London while indulging in miles on end of beautiful scenic views.
Did you know?
You can find the straightest railway in the world in Australia. This railway line is 478 kilometres long and is also considered the longest and straightest railway line in the world.
One of the deepest train stations in the world is in Kiev. Located at a depth of 105 m, it was designed in this way to serve as a shelter in the event of an attack. The second deepest station is in China. Badaling station is located 60 m under the Great Wall of China!
Railway companies played a major role as early as 1883 in the use of time zones as we know them today.
Top Traveled Train Routes
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