Next bus departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Bus | Lammas Street, outside the Boar’s Head | Sophia Gardens | CheapestFastest | ||||
| Bus | Lammas Street, outside the Boar’s Head | Sophia Gardens | No tags | ||||
| Bus | Lammas Street, outside the Boar’s Head | Sophia Gardens | No tags | ||||
| Bus | Lammas Street, outside the Boar’s Head | Sophia Gardens | No tags |
Last refresh of the prices: Yesterday at 2:36 PM GMT.
Compare 3 ways to go from Carmarthen to Cardiff
Among the sustainable travel choices, the carpool stands out as the good way to reach Cardiff. The journey takes about 1 hour 50 minutes and with fares starting at just $16, it presents an excellent value for a comfortable ride.
Where are the popular stops in Carmarthen and Cardiff?
Stops in Carmarthen
- A
Carmarthen Bus Stop (o/s Bus Stn)
27 Blue Street, Stand 2, Carmarthen SA31 3LE
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
Compare bus companies
Based on 29741 reviews, the company was rated 4.2 stars on Busbud. Travelers 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 $12
National Express Carmarthen Cardiff recent customer reviews
nd friendly driver
Anne M.
Excellent our driver was very informative and sociable
Janet J.
Brilliant service
Ann W.
Frequently asked questions about traveling from Carmarthen to Cardiff 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 Carmarthen to Cardiff?
The cheapest bus tickets from Carmarthen to Cardiff start from $12. The average price for this route is around $16. 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 Carmarthen to Cardiff?
The average bus trip duration from Carmarthen to Cardiff is 2h 30m, covering a distance of 55 miles (88 km). The quickest bus can get you there in 2h 30m and is operated by National Express.
Which bus companies service the Carmarthen to Cardiff route?
Several major train operators operate on this route with 2 trains available per day.
What is the earliest and latest departure time for the bus from Carmarthen to Cardiff?
The earliest bus departs from Carmarthen to Cardiff at 8:25am. And the latest bus departs at 10:55am.
What are the CO₂ emissions for the bus trip from Carmarthen to Cardiff?
A bus trip from Carmarthen to Cardiff generates an estimated 2 kg of CO₂, making it a highly eco-friendly travel option and recommended mode of travel 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 Carmarthen to Cardiff was searched and found on Dec 4, 2025 with a price of $10To save money and be sure you have the best seat, it's a good idea to buy your bus tickets from Carmarthen to Cardiff, as early as possible.
You can expect to pay from $10 to $23 for a bus ticket from Carmarthen to Cardiff based on the last 2 days. You can expect to find the cheapest price for the trip at $10 which is on 2025-12-04.
