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

The average train ticket price from Cardiff to Carmarthen is $12. The best way to find train tickets from Cardiff to Carmarthen 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 train trip from Cardiff to Carmarthen?

A train trip between Cardiff and Carmarthen is around 1h 51m, although the fastest train will take about 1h 36m. This is the time it takes to travel the 55 miles that separates the two cities.

How many daily trains are there between Cardiff and Carmarthen?

The number of trains from Cardiff to Carmarthen can differ depending on the day of the week. On average, there are 10. Some trains are direct while others have layovers. Simplify your train trip from Cardiff to Carmarthen by comparing and selecting the train that fits your travel style and budget on Busbud.

Which train companies travel from Cardiff to Carmarthen?

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

Train Cardiff to Carmarthen from $10

Next train departures

Next departures for Cardiff to Carmarthen on November 18
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	4:47pm	Cardiff Central	2h 2m	6:49pm	Carmarthen	Cheapest
Train	3:37pm	Cardiff Central	1h 44m	5:21pm	Carmarthen	Fastest
Train	3:37pm	Cardiff Central	1h 44m	5:21pm	Carmarthen	No tags
Train	4:06pm	Cardiff Central	1h 51m	5:57pm	Carmarthen	No tags
Train	5:45pm	Cardiff Central	1h 49m	7:34pm	Carmarthen	No tags

Next departures for Cardiff to Carmarthen on November 20
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	7:40am	Cardiff Central	1h 56m	9:36am	Carmarthen	Cheapest
Train	10:06am	Cardiff Central	1h 43m	11:49am	Carmarthen	Fastest
Train	8:42am	Cardiff Central	1h 58m	10:40am	Carmarthen	No tags
Train	8:47am	Cardiff Central	1h 45m	10:32am	Carmarthen	No tags
Train	8:42am	Cardiff Central	1h 58m	10:40am	Carmarthen	No tags

Next departures for Cardiff to Carmarthen on November 21
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	7:40am	Cardiff Central	1h 56m	9:36am	Carmarthen	Cheapest
Train	10:06am	Cardiff Central	1h 43m	11:49am	Carmarthen	Fastest
Train	8:42am	Cardiff Central	1h 58m	10:40am	Carmarthen	No tags
Train	8:47am	Cardiff Central	1h 45m	10:32am	Carmarthen	No tags
Train	8:42am	Cardiff Central	1h 58m	10:40am	Carmarthen	No tags

Last refresh of the prices: Last Saturday at 7:15 PM GMT.

Compare 2 ways to go from Cardiff to Carmarthen

We recommend taking the bus

Among the sustainable travel choices, the bus stands out as the good way to reach Carmarthen. The journey takes about 2 hours 10 minutes and with fares starting at just $12, it presents an excellent value for a comfortable ride.

1bus per day

2h 10mAverage Duration

55 milesDistance

2kgCO₂ emissions

	Average Price	Average Duration	CO₂ emissions	Actions
Bus	Average Price$12 - $18	Average Duration2h 10m	CO₂ emissions 2kg CO₂e
Train	Average Price$11 - $59	Average Duration1h 51m	CO₂ emissions 2kg 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

Train and bus companies in GB:Amtrak, Trenitalia, Renfe, VIA Rail Canada, RegioJet, FlixTrain, CrossCountry

Frequently asked questions about traveling from Cardiff to Carmarthen by train

How much does a train ticket from Cardiff to Carmarthen cost?
How long is the train trip from Cardiff to Carmarthen?
How many daily trains are there between Cardiff and Carmarthen?
Which train companies travel from Cardiff to Carmarthen?

Find cheapest prices for trains

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

Best price found

11/16

$11

11/17

$11

Today

$11

11/19

$11

11/20

$11

11/21

$11

11/22

$12

11/23

$18

The cheapest trip from Cardiff to Carmarthen was searched and found on Nov 16, 2025 with a price of $11

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

You can expect to pay from $11 to $56 for a train ticket from Cardiff to Carmarthen based on the last 2 days. You can expect to find the cheapest price for the trip at $11 which is on 2025-11-19.

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 Cardiff to Carmarthen?

The train is the cheapest travel choice for this destination

Vehicle Type	Travel Time	Avg Price	Daily Departures
Vehicle TypeBus	Travel Time2h 10m	Avg Price$14	Daily Departures1
Vehicle TypeTrain	Travel Time1h 51m	Avg Price$12	Daily Departures10

The best way to travel between Cardiff and Carmarthen is by train. By choosing the train, you'll get to save some money as you travel to your destination, as ticket prices cost $12 on average. If you're on a budget, you'll find cheap tickets from $11. If you're looking for the fastest way to get to Carmarthen, choose the train, as it will take you from Cardiff to Carmarthen in about 1h 51m - that's the fastest way to get there!