How much is the train ticket from Carmarthen to London?

The cheapest train tickets from Carmarthen to London start from R 910. The average price for this train route is around R 1 614. Busbud recommends booking your tickets in advance for a better chance to secure the lowest possible price.

How long is the train journey from Carmarthen to London?

The average train journey time from Carmarthen to London is 3h 50m, covering a distance of 288 km. The quickest train can get you there in 3h 39m and is operated by Great Western Railway .

Which train operators serve the Carmarthen to London route?

Several major train operators run on this route, with 4 trains available per day.

What are the earliest and latest departure times for the train from Carmarthen to London?

The earliest train from Carmarthen to London departs at 07:18. And the latest train departs at 19:20.

Train Carmarthen to London from R 865

Next train departures

Next departures from Carmarthen to London on 12 December
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	18:18	Carmarthen	3h 51m	22:09	London Paddington	Cheapest
Train	11:27	Carmarthen	3h 45m	15:12	London Paddington	Fastest
Train	07:23	Carmarthen	3h 57m	11:20	London Paddington	No tags
Train	07:23	Carmarthen	3h 57m	11:20	London Paddington	No tags
Train	09:21	Carmarthen	3h 49m	13:10	London Paddington	No tags

Last refresh of the prices: Yesterday at 1:49 AM GMT.

Compare 3 ways to travel from Carmarthen to London

We recommend taking the train

Among the sustainable travel choices, the train stands out as a good way to reach London. The journey takes about 3 hours 50 minutes and with fares starting at just R 910, it presents an excellent value for a comfortable ride.

4train per day

3h 50mAverage duration

288 kmDistance

7kgCO₂ emissions

	Average price	Average duration	CO₂ emissions
Bus	Average priceR 349 - R 1 117	Average duration6h 10m	CO₂ emissions 7kg CO₂e
Train	Average priceR 910 - R 2 822	Average duration3h 50m	CO₂ emissions 7kg CO₂e
Carpool	Average priceR 343 - R 343	Average duration4h 10m	CO₂ emissions 12kg CO₂e

Train Companies

Great Western Railway

4/542 reviews

Staff5

Timeliness4.7

Cleanliness4.7

WiFi4

Based on 42 reviews, the company was rated 4 stars on Busbud. Travellers were especially satisfied with the staff and the seats but often complained with the Wi-Fi. Great Western Railway ticket prices on this trip start at R 910

GB train companies: Amtrak, Trenitalia, Renfe, VIA Rail Canada, RegioJet, FlixTrain, Amtrak Acela

Frequently asked questions about travelling from Carmarthen to London by train

Please note that timetables, routes, or operator details shown here may be updated or differ at the time of your trip.

How much is the train ticket from Carmarthen to London?
The cheapest train tickets from Carmarthen to London start from R 910. The average price for this train route is around R 1 614. Busbud recommends booking your tickets in advance for a better chance to secure the lowest possible price.
How long is the train journey from Carmarthen to London?
The average train journey time from Carmarthen to London is 3h 50m, covering a distance of 288 km. The quickest train can get you there in 3h 39m and is operated by Great Western Railway.
Which train operators serve the Carmarthen to London route?
Several major train operators run on this route, with 4 trains available per day.
What are the earliest and latest departure times for the train from Carmarthen to London?
The earliest train from Carmarthen to London departs at 07:18. And the latest train departs at 19:20.

Find cheapest prices for trains

Price is for a one-way ticket for one passenger and based on past searches.

Best price found

10/12

R 1 460

11/12

R 1 478

Today

R 1 472

13/12

R 1 552

14/12

R 1 551

15/12

R 1 456

16/12

R 865

17/12

R 870

The cheapest trip from Carmarthen to London was searched and found on 16 Dec 2025 with a price of R 865

To 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 R 865 to R 2 711 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 R 865, which is on 2025-12-16.