Next bus departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Bus | Victoria Coach Station | Lammas Street, outside the Boar’s Head | CheapestFastest | ||||
| Bus | Victoria Coach Station | Lammas Street, outside the Boar’s Head | No tags | ||||
| Bus | Victoria Coach Station | Lammas Street, outside the Boar’s Head | No tags |
Last refresh of the prices: Yesterday at 13:08 GMT.
Compare 3 ways to travel from London to Carmarthen
Among the sustainable travel choices, the carpool stands out as a good way to reach Carmarthen. The journey takes about 4 hours 10 minutes and with fares starting at just £35, it presents an excellent value for a comfortable ride.
Where are the popular stops in London and Carmarthen?
Stops in London
- A164 Buckingham Palace Rd, Belgravia, London SW1W 9TP, UK
- B235 Finchley Rd, London NW3, UK
- C
Stop SC - Hammersmith Bridge Rd.
Hammersmith, Stop SC, London W6 9PJ, UK - D
Earl's Court
76-77 A4, Kensington, London SW5, UK - E26 New Kent Rd, London SE1 6TJ, UK
- FThe Old Fire Station, Old Kent Rd, London SE1 5UE, UK
Stops in Carmarthen
- A
Carmarthen Bus Stop (o/s Bus Stn)
27 Blue Street, Stand 2, Carmarthen SA31 3LE
Compare bus companies
Customers consistently praise the comfortable coaches and friendly, professional staff. Many highlight the punctuality of departures and arrivals, contributing to a relaxing travel experience. Passengers appreciate the clean environment on board and express willingness to use this service again due to their positive experiences.
National Express London Carmarthen recent customer reviews
Super. The coach departed on time and arrived on time. Comfortable journey (5¾ hours). Great driver. Communicative/informative & friendly.
Paul Andrew H.
My first coach trip ever, I worried for nothing it was great from start to finish, drivers friendly passengers friendly made friends nice relaxing journey. I loved every second
Vivienne B.
Good seats, the coach was a comfortable temperature all the time but best of all were the very friendly and professional staff
Rosalind M.
Frequently asked questions about travelling by bus from London to Carmarthen
Please note that timetables, routes, or operator details shown here may be updated or vary at the time of your journey.
How much is the bus ticket from London to Carmarthen?
The cheapest coach tickets from London to Carmarthen start from £16. The average price for this route is around £21. Busbud recommends that you book your tickets in advance for a better chance to get the lowest possible price.
How long is the bus journey from London to Carmarthen?
The average bus journey time from London to Carmarthen is 5h 45m, covering a distance of 180 miles. The fastest bus can take you there in 5h 45m and is operated by National Express.
Which bus companies service the London 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 London to Carmarthen?
The earliest bus departs from London to Carmarthen at 10:30. And the latest bus departs at 12:00.
What are the CO₂ emissions for the bus trip from London to Carmarthen?
A bus journey from London to Carmarthen produces an estimated 7 kg of CO₂, making it a highly eco-friendly choice 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 London to Carmarthen was searched and found on 2 Dec 2025 with a price of £17To save money and be sure you have the best seat, it's a good idea to buy your bus tickets from London to Carmarthen as early as possible.
You can expect to pay from £17 to £42 for a bus ticket from London to Carmarthen based on the last 2 days. You can expect to find the cheapest price for the trip at £17, which is on 2025-12-02.
What's the cheapest way to go from London to Carmarthen?
The bus is the cheapest travel choice for this destination
