How much is the train ticket from London to Carmarthen?

The cheapest train tickets from London to Carmarthen start from R 906. The average price for this train route is around R 2 178. Busbud recommends booking your tickets in advance for a better chance to secure the lowest possible price.

How long is the train journey from London to Carmarthen?

The average train journey time from London to Carmarthen is 3h 41m, covering a distance of 288 km. The quickest train can get you there in 3h 33m and is operated by Great Western Railway .

Which train operators serve the London to Carmarthen route?

Several major train operators run on this route, with 3 trains available per day.

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

The earliest train from London to Carmarthen departs at 08:46. And the latest train departs at 17:48.

Train London to Carmarthen from R 987

Next train departures

Next departures from London to Carmarthen on 12 December
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	11:48	London Paddington	3h 40m	15:28	Carmarthen	Cheapest
Train	09:48	London Paddington	3h 40m	13:28	Carmarthen	Fastest
Train	09:48	London Paddington	3h 40m	13:28	Carmarthen	No tags
Train	11:48	London Paddington	3h 40m	15:28	Carmarthen	No tags
Train	16:18	London Paddington	3h 42m	20:00	Carmarthen	No tags

Last refresh of the prices: Today at 12:06 AM GMT.

Compare 3 ways to travel from London to Carmarthen

We recommend carpooling

Among the sustainable travel choices, the carpool stands out as a good way to reach Carmarthen. The journey takes about 4 hours 10 minutes and with fares starting at just R 769, it presents an excellent value for a comfortable ride.

1carpool per day

4h 10mAverage duration

292 kmDistance

12kgCO₂ emissions

	Average price	Average duration	CO₂ emissions
Bus	Average priceR 348 - R 809	Average duration5h 45m	CO₂ emissions 7kg CO₂e
Train	Average priceR 906 - R 4 419	Average duration3h 41m	CO₂ emissions 7kg CO₂e
Carpool	Average priceR 769 - R 769	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 906

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

Frequently asked questions about travelling from London to Carmarthen 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 London to Carmarthen?
The cheapest train tickets from London to Carmarthen start from R 906. The average price for this train route is around R 2 178. Busbud recommends booking your tickets in advance for a better chance to secure the lowest possible price.
How long is the train journey from London to Carmarthen?
The average train journey time from London to Carmarthen is 3h 41m, covering a distance of 288 km. The quickest train can get you there in 3h 33m and is operated by Great Western Railway.
Which train operators serve the London to Carmarthen route?
Several major train operators run on this route, with 3 trains available per day.
What are the earliest and latest departure times for the train from London to Carmarthen?
The earliest train from London to Carmarthen departs at 08:46. And the latest train departs at 17:48.

Find cheapest prices for trains

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

Best price found

09/12

R 1 062

10/12

R 979

Today

R 1 566

12/12

R 1 579

13/12

No data

14/12

R 1 549

15/12

No data

16/12

No data

The cheapest trip from London to Carmarthen was searched and found on 10 Dec 2025 with a price of R 979

To save money and be sure you have the best seat, it's a good idea to buy your train tickets from London to Carmarthen as early as possible.

You can expect to pay from R 979 to R 5 821 for a train ticket from London to Carmarthen based on the last 2 days. You can expect to find the cheapest price for the trip at R 1 549, which is on 2025-12-14.