Next bus departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Bus | Sophia Gardens | Lammas Street, outside the Boar’s Head | CheapestFastest | ||||
| Bus | Sophia Gardens | Lammas Street, outside the Boar’s Head | No tags |
Last refresh of the prices: Yesterday at 8:35 AM GMT.
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 R 198, it presents an excellent value for a comfortable ride.
Where are the popular stops in Cardiff and Carmarthen?
Stops in Cardiff
- A2 Sophia Cl, Cardiff CF11, UK
- B
Cardiff University (o/s Cathays Rail Stn)
50 Park Place (Bus Stop, o/s Cathays Rail Stn), Cardiff CF10 - C
Cardiff Coach Station - Sophia Gardens
22 Cathedral Rd, Cardiff CF11 9LJ, UK - D
Cardiff - Castle Street Bus Stop
21A Castle St, Cardiff CF10 1BT, UK - E
National Museum
Gorsedd Gardens Rd, Cardiff CF10 3NP, UK - F
Cardiff Bus Stop - Westgate
206 Westgate St, Cardiff CF10, UK
Stops in Carmarthen
- A
Carmarthen Bus Stop (o/s Bus Stn)
27 Blue Street, Stand 2, Carmarthen SA31 3LE
Compare bus companies
Based on 29763 reviews, the company was rated 4.2 stars on Busbud. Travellers were especially satisfied with the ticket access and the staff but often complained with the Wi-Fi. National Express ticket prices on this trip start at R 198
National Express Cardiff Carmarthen recent customer reviews
The service was great better on the way back had more i information. Where chargers were situated etc. The waiting times are long and after an hour and a half wait then the connection being delayed a further 45 mins it was rather annoying.
Julia J.
excellent service
Mark C.
Frequently asked questions about travelling from Cardiff to Carmarthen by bus
Please note that timetables, routes, or operator details shown here may be updated or differ at the time of your trip.
How much is the bus ticket from Cardiff to Carmarthen?
The cheapest bus tickets from Cardiff to Carmarthen start at R 198. The average price for this route is around R 229. Busbud recommends booking your tickets in advance for the best chance of getting the lowest possible price.
How long is the bus journey from Cardiff to Carmarthen?
The average bus journey time from Cardiff to Carmarthen is 2h 10m, covering a distance of 88 km. The fastest bus gets you there in 2h 5m and is operated by National Express.
Which bus companies service the Cardiff to Carmarthen route?
Several major bus companies operate on this route with 1 buses available per day.
What is the earliest and latest departure time for the bus from Cardiff to Carmarthen?
The earliest bus departs from Cardiff to Carmarthen at 14:35. And the latest bus departs at 16:50.
What are the CO₂ emissions for the bus trip from Cardiff to Carmarthen?
A bus trip from Cardiff to Carmarthen produces an estimated 2 kg of CO₂, making it a highly eco-friendly travel option and Busbud’s recommended way to travel.
Find cheapest prices for buses
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 11 Dec 2025 with a price of R 166To save money and be sure you have the best seat, it's a good idea to buy your bus tickets from Cardiff to Carmarthen as early as possible.
You can expect to pay from R 166 to R 420 for a bus ticket from Cardiff to Carmarthen based on the last 2 days. You can expect to find the cheapest price for the trip at R 183, which is on 2025-12-16.
