How much does a train ticket cost from Carmarthen to Cardiff?

The cheapest train tickets from Carmarthen to Cardiff start from £9. The average price for this train route is around £10. Busbud recommends booking your tickets in advance for the best chance of getting the lowest possible price.

How long is the train journey from Carmarthen to Cardiff?

The average train journey time from Carmarthen to Cardiff is 1h 54m, covering a distance of 55 miles. The fastest train gets you there in 1h 30m and is operated by Transport for Wales .

Which train operators serve the Carmarthen to Cardiff route?

Several major train operators run on this route with 9 trains available per day, including services from Transport for Wales , Great Western Railway .

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

The earliest train from Carmarthen to Cardiff departs at 07:18. And the latest train departs at 22:42.

Which is the best train operator from Carmarthen to Cardiff?

According to Busbud customers, the highest-rated train operator on this route is Great Western Railway , with an average rating of 4.0 out of 5 stars based on 42 reviews.

Which train operator has the best Wi-Fi from Carmarthen to Cardiff?

According to reviews on Busbud, the train operator Transport for Wales has the highest Wi-Fi rating with a score of 5.0.

Which train operator has the most punctual service from Carmarthen to Cardiff?

According to Busbud traveller reviews, the most punctual train operator on this route is Transport for Wales , with a punctuality rating of 5.0 out of 5 stars.

Which train operator has the cleanest trains from Carmarthen to Cardiff?

According to Busbud traveller reviews, the train operator with the cleanest trains on this route is Transport for Wales , with a cleanliness rating of 5.0 out of 5 stars.

Train Carmarthen to Cardiff from £9

Next train departures

Next departures from Carmarthen to Cardiff on 12 December
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	15:56	Carmarthen	1h 56m	17:52	Cardiff Central	Cheapest
Train	16:56	Carmarthen	1h 47m	18:43	Cardiff Central	Fastest
Train	16:19	Carmarthen	1h 55m	18:14	Cardiff Central	No tags
Train	16:32	Carmarthen	2h 6m	18:38	Cardiff Central	No tags
Train	16:19	Carmarthen	1h 55m	18:14	Cardiff Central	No tags

Next departures from Carmarthen to Cardiff on 13 December
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	15:58	Carmarthen	1h 45m	17:43	Cardiff Central	CheapestFastest
Train	07:24	Carmarthen	1h 53m	09:17	Cardiff Central	No tags
Train	07:58	Carmarthen	1h 52m	09:50	Cardiff Central	No tags
Train	07:24	Carmarthen	1h 53m	09:17	Cardiff Central	No tags
Train	08:32	Carmarthen	2h 6m	10:38	Cardiff Central	No tags

Last refresh of the prices: Yesterday at 09:50 GMT.

Compare 3 ways to travel from Carmarthen to Cardiff

We recommend carpooling

Among the sustainable travel choices, the carpool stands out as a good way to reach Cardiff. The journey takes about 1 hour 50 minutes and with fares starting at just £12, it presents an excellent value for a comfortable ride.

1carpool per day

1h 50mAverage duration

55 milesDistance

4kgCO₂ emissions

	Average price	Average duration	CO₂ emissions
Bus	Average price£9 - £20	Average duration2h 30m	CO₂ emissions 2kg CO₂e
Train	Average price£9 - £45	Average duration1h 54m	CO₂ emissions 2kg CO₂e
Carpool	Average price£12 - £12	Average duration1h 50m	CO₂ emissions 4kg CO₂e

Train Companies

Transport for Wales

3.5/58 reviews

Staff5

Timeliness5

Cleanliness5

WiFi5

Great Western Railway

4/542 reviews

Staff5

Timeliness4.7

Cleanliness4.7

WiFi4

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

Frequently asked questions about travelling from Carmarthen to Cardiff by train

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

How much does a train ticket cost from Carmarthen to Cardiff?
The cheapest train tickets from Carmarthen to Cardiff start from £9. The average price for this train route is around £10. Busbud recommends booking your tickets in advance for the best chance of getting the lowest possible price.
How long is the train journey from Carmarthen to Cardiff?
The average train journey time from Carmarthen to Cardiff is 1h 54m, covering a distance of 55 miles. The fastest train gets you there in 1h 30m and is operated by Transport for Wales.
Which train operators serve the Carmarthen to Cardiff route?
Several major train operators run on this route with 9 trains available per day, including services from Transport for Wales, Great Western Railway.
What are the earliest and latest departure times for the train from Carmarthen to Cardiff?
The earliest train from Carmarthen to Cardiff departs at 07:18. And the latest train departs at 22:42.
Which is the best train operator from Carmarthen to Cardiff?
According to Busbud customers, the highest-rated train operator on this route is Great Western Railway, with an average rating of 4.0 out of 5 stars based on 42 reviews.
Which train operator has the best Wi-Fi from Carmarthen to Cardiff?
According to reviews on Busbud, the train operator Transport for Wales has the highest Wi-Fi rating with a score of 5.0.
Which train operator has the most punctual service from Carmarthen to Cardiff?
According to Busbud traveller reviews, the most punctual train operator on this route is Transport for Wales, with a punctuality rating of 5.0 out of 5 stars.
Which train operator has the cleanest trains from Carmarthen to Cardiff?
According to Busbud traveller reviews, the train operator with the cleanest trains on this route is Transport for Wales, with a cleanliness rating of 5.0 out of 5 stars.

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

£9

11/12

£9

Today

£9

13/12

£9

14/12

£9

15/12

£9

16/12

No data

17/12

No data

The cheapest trip from Carmarthen to Cardiff was searched and found on 14 Dec 2025 with a price of £9

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

You can expect to pay from £9 to £43 for a train ticket from Carmarthen to Cardiff based on the last 2 days. You can expect to find the cheapest price for the trip at £9, which is on 2025-12-14.

Usually Great Western Railway will charge you higher prices for tickets closer to the departure date. To find the best prices, you should be flexible on your date of travel.

What's the cheapest way to go from Carmarthen to Cardiff?

The train is the cheapest travel choice for this destination

Vehicle type	Travel time	Avg price	Daily departures
Vehicle typeBus	Travel time2h 30m	Avg price£13	Daily departures2
Vehicle typeTrain	Travel time1h 54m	Avg price£10	Daily departures9
Vehicle typeCarpool	Travel time1h 50m	Avg price£12	Daily departures1

The best way to travel between Carmarthen and Cardiff is by train. By choosing the train, you'll get to save some money as you travel to your destination, as ticket prices cost £10 on average. If you're on a budget, you'll find cheap tickets from £9. If you're looking for the fastest way to get to Cardiff, choose the train, as it will take you from Carmarthen to Cardiff in about 1h 50m – that's the fastest way to get there!