Train tickets from Carmarthen to Cardiff

Next train departures

Next departures for Carmarthen to Cardiff on November 16
Operated byVehicle typeDeparture timeDeparture locationTrip durationArrival timeArrival locationRecommendedPrice and booking link
Transport for WalesTrain
Carmarthen
Cardiff CentralCheapest
Transport for WalesTrain
Carmarthen
Cardiff CentralFastest
Transport for WalesTrain
Carmarthen
Cardiff CentralNo tags
Great Western RailwayTrain
Carmarthen
Cardiff CentralNo tags
Transport for WalesTrain
Carmarthen
Cardiff CentralNo 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$17 - $27Average Duration2h 30m
2kg CO₂e
Average Price$16 - $85Average Duration1h 55m
2kg CO₂e
Carpool
Average Price$17 - $17Average Duration1h 20m
4kg CO₂e

Frequently asked questions about travelling from Carmarthen to Cardiff by train

  1. 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!

  2. 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.

  3. 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.

  4. 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
busbud logoThe 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.

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