Next departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Cardiff Central | Carmarthen | Cheapest | |||||
| Cardiff Central | Carmarthen | Fastest | |||||
 | Cardiff Central | Carmarthen | No tags | |||||
| Cardiff Central | Carmarthen | No tags | |||||
| Cardiff Central | Carmarthen | No tags |
Last refresh of the prices: Yesterday at 12:34 PM GMT.
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Compare 2 ways to travel 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.
Train Cardiff to Carmarthen: Trip Overview
Please note, this information is subject to change.
Train Companies
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
How much does a cheap train ticket from Cardiff to Carmarthen cost?
The average train ticket price from Cardiff to Carmarthen is US$13. 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!
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 37m. This is the time it takes to travel the 89 km that separates the two cities.
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.
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.
Find cheapest prices for trains
Price is for a one-way ticket for one passenger and based on past searches.
The cheapest trip from Cardiff to Carmarthen was searched and found on 02 Nov 2025 with a price of US$10To 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$10 to US$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 US$11, which is on 2025-11-07.
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.
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
Top Travelled Train Routes
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