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

The average train ticket price from Carmarthen to Cardiff is $31. The best way to find cheap train tickets from Carmarthen to Cardiff is to book your tickets as early as possible. Prices tend to rise as your travel date approaches, so book in advance to secure the best prices!

How long is the trip from Carmarthen to Cardiff?

A train trip between Carmarthen and Cardiff is around 1h 55m, although the fastest train will take about 1h 30m. This is the time it takes to travel the 89 km that separates the two cities.

How many daily trains are there between Carmarthen and Cardiff?

The number of trains from Carmarthen to Cardiff can differ depending on the day of the week. On average, there are 9. Some trains are direct while others include transferring trains. Simplify your train trip from Carmarthen to Cardiff by comparing and selecting the train that fits your travel style and budget on Busbud.

Which train companies travel from Carmarthen to Cardiff?

When taking the train from Carmarthen to Cardiff, you can travel comfortably and safely with Transport for Wales, Great Western Railway.

Train Carmarthen to Cardiff from $15

Next train departures

Next departures for Carmarthen to Cardiff on November 16
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	4:41pm	Carmarthen	1h 52m	6:33pm	Cardiff Central	Cheapest
Train	1:34pm	Carmarthen	1h 30m	3:04pm	Cardiff Central	Fastest
Train	10:55am	Carmarthen	2h 52m	1:47pm	Cardiff Central	No tags
Train	11:56am	Carmarthen	2h 20m	2:16pm	Cardiff Central	No tags
Train	10:55am	Carmarthen	2h 52m	1:47pm	Cardiff Central	No tags

Next departures for Carmarthen to Cardiff on November 19
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	7:59am	Carmarthen	1h 51m	9:50am	Cardiff Central	Cheapest
Train	4:56pm	Carmarthen	1h 47m	6:43pm	Cardiff Central	Fastest
Train	7:23am	Carmarthen	1h 53m	9:16am	Cardiff Central	No tags
Train	8:31am	Carmarthen	2h 7m	10:38am	Cardiff Central	No tags
Train	7:23am	Carmarthen	1h 53m	9:16am	Cardiff Central	No tags

Last refresh of the prices: Today at 1:39 AM GMT.

Compare 3 ways to go 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 20 minutes, and with fares starting at just $17, it presents an excellent value for a comfortable ride.

1carpool per day

1h 20mAverage Duration

89 kmDistance

4kgCO₂ emissions

	Average Price	Average Duration	CO₂ emissions
Bus	Average Price$17 - $27	Average Duration2h 30m	CO₂ emissions 2kg CO₂e
Train	Average Price$16 - $85	Average Duration1h 55m	CO₂ emissions 2kg CO₂e
Carpool	Average Price$17 - $17	Average Duration1h 20m	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 and bus companies:Amtrak, Trenitalia, Renfe, VIA Rail Canada, RegioJet, FlixTrain, CrossCountry

Frequently asked questions about travelling from Carmarthen to Cardiff by train

How much does a cheap train ticket from Carmarthen to Cardiff cost?
The average train ticket price from Carmarthen to Cardiff is $31. The best way to find cheap train tickets from Carmarthen to Cardiff is to book your tickets as early as possible. Prices tend to rise as your travel date approaches, so book in advance to secure the best prices!
How long is the trip from Carmarthen to Cardiff?
A train trip between Carmarthen and Cardiff is around 1h 55m, although the fastest train will take about 1h 30m. This is the time it takes to travel the 89 km that separates the two cities.
How many daily trains are there between Carmarthen and Cardiff?
The number of trains from Carmarthen to Cardiff can differ depending on the day of the week. On average, there are 9. Some trains are direct while others include transferring trains. Simplify your train trip from Carmarthen to Cardiff by comparing and selecting the train that fits your travel style and budget on Busbud.
Which train companies travel from Carmarthen to Cardiff?
When taking the train from Carmarthen to Cardiff, you can travel comfortably and safely with Transport for Wales, Great Western Railway.

Find cheapest prices for trains

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

Best price found

11-13

$16

11-14

$26

Today

$20

11-16

$16

11-17

$16

11-18

$17

11-19

$16

11-20

$16

The cheapest trip from Carmarthen to Cardiff was searched and found on Nov 16, 2025 with a price of $16

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 $16 to $81 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 $16 which is on 2025-11-16.

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.