Next train departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Train | Carmarthen | Swansea | Cheapest | ||||
 | Train | Carmarthen | Swansea | Fastest | ||||
| Train | Carmarthen | Swansea | No tags | ||||
| Train | Carmarthen | Swansea | No tags | ||||
| Train | Carmarthen | Swansea | No tags |
Last refresh of the prices: Today at 1:32 AM GMT.
Compare 2 ways to go from Carmarthen to Swansea
Among the sustainable travel choices, the bus stands out as a good way to reach Swansea. The journey takes about 50 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 Carmarthen to Swansea by train
How much does a cheap train ticket from Carmarthen to Swansea cost?
The average train ticket price from Carmarthen to Swansea is $27. The best way to find cheap train tickets from Carmarthen to Swansea 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 trip from Carmarthen to Swansea?
A train trip between Carmarthen and Swansea is around 49m, although the fastest train will take about 42m. This is the time it takes to travel the 37 km that separates the two cities.
How many daily trains are there between Carmarthen and Swansea?
The number of trains from Carmarthen to Swansea can differ depending on the day of the week. On average, there are 10. Some trains are direct while others include transferring trains. Simplify your train trip from Carmarthen to Swansea by comparing and selecting the train that fits your travel style and budget on Busbud.
Which train companies travel from Carmarthen to Swansea?
When taking the train from Carmarthen to Swansea, 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 Carmarthen to Swansea was searched and found on Nov 21, 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 Carmarthen to Swansea, as early as possible.
You can expect to pay from $25 to $38 for a train ticket from Carmarthen to Swansea based on the last 2 days. You can expect to find the cheapest price for the trip at $25 which is on 2025-11-21.
