Trains tickets from Cardiff to Carmarthen

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Today1 May
Tomorrow2 May
Sat3 May
from US$11
Sun4 May
Mon5 May
Tue6 May
Wed7 May
Thu8 May

Trains leaving Saturday

One passenger / one way

  • This trip is recommended because it is the: Cheapest
    Departure time: 3 May at
    Departure city: Cardiff
    Departure location: Cardiff Central
    Arrival time: 3 May at
    Destination city: Carmarthen
    Destination location: Carmarthen
    Operated by: Great Western RailwayGreat Western Railway
    Vehicle: TrainDuration:
  • This trip is recommended because it is the: Fastest
    Departure time: 3 May at
    Departure city: Cardiff
    Departure location: Cardiff Central
    Arrival time: 3 May at
    Destination city: Carmarthen
    Destination location: Carmarthen
    Operated by: Transport for WalesTransport for Wales
    Vehicle: TrainDuration:
  • Departure time: 3 May at
    Departure city: Cardiff
    Departure location: Cardiff Central
    Arrival time: 3 May at
    Destination city: Carmarthen
    Destination location: Carmarthen
    Operated by: Transport for WalesTransport for Wales
    Vehicle: TrainDuration:
  • Departure time: 3 May at
    Departure city: Cardiff
    Departure location: Cardiff Central
    Arrival time: 3 May at
    Destination city: Carmarthen
    Destination location: Carmarthen
    Operated by: Great Western RailwayGreat Western Railway
    Vehicle: TrainDuration:
  • Departure time: 3 May at
    Departure city: Cardiff
    Departure location: Cardiff Central
    Arrival time: 3 May at
    Destination city: Carmarthen
    Destination location: Carmarthen
    Operated by: Transport for WalesTransport for Wales
    Vehicle: TrainDuration:

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Compare 3 ways to travel from Cardiff to Carmarthen

Bus
Average priceUS$12 - US$18Average duration2h 10m
2kg CO₂e5 out of 5 stars
Most eco-friendly
Train
Average priceUS$11 - US$61Average duration1h 49m
2kg CO₂e5 out of 5 stars
Cheapest
Carpool
Average priceUS$17 - US$17Average duration1h 20m
4kg CO₂e4 out of 5 stars
Fastest
busbud logoBusbud recommends taking the bus from Cardiff to Carmarthen

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

1bus per day
2h 10mAverage duration
US$12Cheapest ticket
2kgCO₂ emissions

Train Cardiff to Carmarthen: Trip Overview

Please note, this information is subject to change.

Average ticket priceUS$20
Average train trip duration1h 49m
Number of daily trains9
Earliest train departure07:40
Distance55 miles
Latest train departure23:18

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 services 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 on the trip Cardiff - Carmarthen

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

    The average train ticket price from Cardiff to Carmarthen is US$20. The best way to find cheap 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!

  2. 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.

  3. How many daily train 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 include transferring trains. Simplify your train trip from Cardiff to Carmarthen by comparing and selecting the train that fits your travel style and budget on Busbud.

Find cheapest prices for trains

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

Best price found
29/04
US$11
30/04
US$19
Today
US$11
02/05
US$11
03/05
US$11
04/05
US$11
05/05
No data
06/05
No data
busbud logoThe cheapest trip from Cardiff to Carmarthen was searched and found on 3 May 2025 with a price of US$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 US$11 to US$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 US$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

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