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

The average train ticket price from Cardiff to Carmarthen is $20. 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 49m, although the fastest train will take about 1h 40m. 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 9. 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.

Trains from Cardiff to Carmarthen | Transport for Wales, Great Western Railway

TomorrowMay 2

SatMay 3

from $11

SunMay 4

MonMay 5

TueMay 6

WedMay 7

ThuMay 8

FriMay 9

Trains leaving Saturday

One passenger / one way

This trip is recommended because it is: Cheapest
Departure time: May 3 at 8:40am
Departure city: Cardiff
Departure location: Cardiff Central
Arrival time: May 3 at 10:24am
Destination city: Carmarthen
Destination location: Carmarthen
Operated by: Great Western Railway
Vehicle: TrainDuration: 1h 44m
This trip is recommended because it is: Fastest
Departure time: May 3 at 6:47pm
Departure city: Cardiff
Departure location: Cardiff Central
Arrival time: May 3 at 8:28pm
Destination city: Carmarthen
Destination location: Carmarthen
Operated by: Transport for Wales
Vehicle: TrainDuration: 1h 41m
Departure time: May 3 at 7:41am
Departure city: Cardiff
Departure location: Cardiff Central
Arrival time: May 3 at 9:31am
Destination city: Carmarthen
Destination location: Carmarthen
Operated by: Transport for Wales
Vehicle: TrainDuration: 1h 50m
Departure time: May 3 at 8:40am
Departure city: Cardiff
Departure location: Cardiff Central
Arrival time: May 3 at 10:24am
Destination city: Carmarthen
Destination location: Carmarthen
Operated by: Great Western Railway
Vehicle: TrainDuration: 1h 44m
Departure time: May 3 at 8:47am
Departure city: Cardiff
Departure location: Cardiff Central
Arrival time: May 3 at 10:40am
Destination city: Carmarthen
Destination location: Carmarthen
Operated by: Transport for Wales
Vehicle: TrainDuration: 1h 53m

Accepted payments

Compare 3 ways to go from Cardiff to Carmarthen.

	Average Price	Average Duration	CO₂ emissions
Bus	Average Price$12 - $18	Average Duration2h 10m	CO₂ emissions 2kg CO₂e5 out of 5 stars	Most eco-friendly
Train	Average Price$11 - $61	Average Duration1h 49m	CO₂ emissions 2kg CO₂e5 out of 5 stars	Cheapest
Carpool	Average Price$17 - $17	Average Duration1h 20m	CO₂ emissions 4kg CO₂e4 out of 5 stars	Fastest

Busbud recommends taking the bus from Cardiff to Carmarthen

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

$12Cheapest ticket

2kgCO₂ emissions

Train Cardiff to Carmarthen: Trip Overview

Please note, this information is subject to change.

Average ticket price$20

Average train trip duration1h 49m

Number of daily trains9

Earliest train departure7:40am

Distance55 miles (88 km)

Latest train departure11:18pm

Train Companies

Transport for Wales

3/57 reviews

Staff5

Timeliness5

Cleanliness5

Wifi5

Great Western Railway

4/541 reviews

Staff5

Timeliness4.7

Cleanliness4.7

Wifi4.5

Train and bus companies in GB:RegioJet, FlixTrain, CrossCountry, Great Western Railway, Northern, Transpennine Express, WESTbahn

Cardiff to Carmarthen Train

With Busbud, comparing and booking tickets for a train from Cardiff to Carmarthen is a breeze. Browse through an extensive selection of train fares and train schedules to find the best deals.

We make it our job to connect you with the most dependable companies that offer train service from Cardiff to Carmarthen.

Discover how much the train trip from Cardiff to Carmarthen will cost you. Use our filters and sorting features to find the cheapest train tickets or high-end trains.

Frequently asked questions for your trip Cardiff - Carmarthen

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?

Find cheapest prices for trains

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

Best price found

04/29

$11

04/30

$19

Today

$11

05/02

$11

05/03

$11

05/04

$11

05/05

No data

05/06

No data

The cheapest trip from Cardiff to Carmarthen was searched and found on May 3, 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 $58 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 2025-05-03.

About Train Travel

Train Travel Tips

Taking the fastest trains allows you to travel at speeds greater than 300 km/h. Taking a trip from Cardiff to Carmarthen is not only much quicker but more comfortable too! You can usually travel directly to the city centre and save time while you're at it.

Whether you take a regional or high-speed train to Carmarthen, you’ll help reduce the environmental impact and carbon footprint of your trip. As you watch the landscapes unfold before your eyes, you can tell yourself that with this choice, you are making sure they remain protected.

With up to 30x less CO2 emissions for your train journey between Cardiff and Carmarthen, the train is an ecological alternative to flights or personal cars.

Make a music playlist for your train ride from Cardiff to Carmarthen, and enjoy the scenery to tunes from your own personal soundtrack.

Did you know?

You can find the straightest railway in the world in Australia. This railway line is 478 kilometres long and is also considered the longest and straightest railway line in the world.

Railway companies played a major role as early as 1883 in the use of time zones as we know them today.

The magnetic levitation train (Maglev for short) is currently the fastest train in the world. With a speed of 603 km/ h, it is closely followed by the French high-speed train (574.8 km / h) which remains in 2020, the fastest train to date

Will you be returning to Cardiff by train?

Train from Carmarthen to Cardiff

Top Traveled Train Routes

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Trains tickets from Cardiff to Carmarthen