Next train departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Train | Swansea | Carmarthen | Cheapest | ||||
 | Train | Swansea | Carmarthen | Fastest | ||||
| Train | Swansea | Carmarthen | No tags | ||||
| Train | Swansea | Carmarthen | No tags | ||||
| Train | Swansea | Carmarthen | No tags |
Last refresh of the prices: Last Monday at 11:19 GMT.
Compare 2 ways to travel from Swansea to Carmarthen
Among the sustainable travel choices, the bus stands out as a good way to reach Carmarthen. The journey takes about 45 minutes and with fares starting at just £8, it presents an excellent value for a comfortable ride.
Train Companies
Frequently asked questions about travelling from Swansea to Carmarthen by train
Please note that timetables, routes, or operator details shown here may be updated or vary at the time of your journey.
How much does a train ticket cost from Swansea to Carmarthen?
The cheapest train tickets from Swansea to Carmarthen start from £14. The average price for this train route is around £14. Busbud recommends booking your tickets in advance for the best chance of getting the lowest possible price.
How long is the train journey from Swansea to Carmarthen?
The average train journey time from Swansea to Carmarthen is 47m, covering a distance of 23 miles. The fastest train gets you there in 38m and is operated by Transport for Wales.
Which train operators serve the Swansea to Carmarthen route?
Several major train operators run on this route with 10 trains available per day, including services from Transport for Wales, Great Western Railway.
What are the earliest and latest departure times for the train from Swansea to Carmarthen?
The earliest train from Swansea to Carmarthen departs at 07:40. And the latest train departs at 23:50.
Which is the best train operator from Swansea to Carmarthen?
According to Busbud customers, the highest-rated train operator on this route is Great Western Railway, with an average rating of 4.0 out of 5 stars based on 42 reviews.
Which train operator has the best Wi-Fi from Swansea to Carmarthen?
According to reviews on Busbud, the train operator Transport for Wales has the highest Wi-Fi rating with a score of 5.0.
Which train operator has the most punctual service from Swansea to Carmarthen?
According to Busbud traveller reviews, the most punctual train operator on this route is Transport for Wales, with a punctuality rating of 5.0 out of 5 stars.
Which train operator has the cleanest trains from Swansea to Carmarthen?
According to Busbud traveller reviews, the train operator with the cleanest trains on this route is Transport for Wales, with a cleanliness rating of 5.0 out of 5 stars.
Find cheapest prices for trains
Price is for a one-way ticket for one passenger and based on past searches.
The cheapest trip from Swansea to Carmarthen was searched and found on 12 Dec 2025 with a price of £14To save money and be sure you have the best seat, it's a good idea to buy your train tickets from Swansea to Carmarthen as early as possible.
You can expect to pay from £14 to £21 for a train ticket from Swansea to Carmarthen based on the last 2 days. You can expect to find the cheapest price for the trip at £14, which is on 2025-12-12.
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.
