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 AM GMT.
Compare 2 ways to go 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 $14, 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 schedules, routes, or operator details shown here may be updated or vary at the time of your trip.
How much is the train ticket from Swansea to Carmarthen?
The cheapest train tickets from Swansea to Carmarthen start at $26. The average price for this train route is around $26. Busbud recommends booking your tickets in advance to increase your chances of getting the lowest possible price.
How long is the train ride from Swansea to Carmarthen?
The average train trip from Swansea to Carmarthen takes 47m and covers 36 km. The quickest 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 serve 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 7:40am. The latest train departs at 11:50pm.
What 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?
Based on reviews on Busbud, the train operator Transport for Wales has the best Wi-Fi rating with a score of 5.0.
Which train operator has the best on-time performance 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 Dec 12, 2025 with a price of $25To 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 $25 to $37 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 $25 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.
