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 | ||||
| Bus | Sophia Gardens | Lammas Street, outside the Boar’s Head | No tags | ||||
| Bus | Sophia Gardens | Lammas Street, outside the Boar’s Head | No tags |
Last refresh of the prices: Today at 11:56 AM GMT.
Compare 2 ways to go 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 $17, 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 29834 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 WiFi. National Express ticket prices on this trip start at $17
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 schedules, routes, or operator details shown here may be updated or vary 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 from $17. The average price for this route is around $22. Busbud recommends that you book your tickets in advance for a better chance to get the lowest possible price.
How long is the bus ride from Cardiff to Carmarthen?
The average bus travel time from Cardiff to Carmarthen is 2h 10m, covering a distance of 88 km. The quickest bus can get 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 are the earliest and latest departure times for the bus from Cardiff to Carmarthen?
The earliest bus departs from Cardiff to Carmarthen at 2:35pm. And the latest bus departs at 4:50pm.
What are the CO₂ emissions for the bus trip from Cardiff to Carmarthen?
A bus trip from Cardiff to Carmarthen generates an estimated 2 kg of CO₂, making it a highly eco-friendly travel option and a mode of travel recommended by Busbud.
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 Jan 12, 2026 with a price of $16To 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 $16 to $32 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 $16 which is on 2026-01-12.
What's the cheapest way to go from Cardiff to Carmarthen?
The Bus is the cheapest travel choice for this destination
