The average bus between Heathrow and Carmarthen takes 6h 4m and the fastest bus takes 5h 30m. The bus service runs several times per day from Heathrow to Carmarthen. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run twice daily between Heathrow and Carmarthen. The earliest departure is at 11:30 AM in the morning, and the last departure from Heathrow is at 1:30 PM which arrives into Carmarthen at 7:00 PM. All services require a transfer, and take on average 6h 4m. The schedules shown below are for the next available departures.
Want to know about travelling from Heathrow to Carmarthen? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Heathrow to Carmarthen. However, there are services departing from Heathrow station and arriving at Carmarthen station via Swansea Bus Station Stand B station. The journey, including transfers, takes approximately 6h 4m.
Heathrow to Carmarthen bus services, operated by National Express, depart from Heathrow Central Bus Station.
Heathrow to Carmarthen bus services, operated by National Express, arrive at Rose and Crown station.
Book your Heathrow to Carmarthen bus tickets online with National Express.
The distance between Heathrow and Carmarthen is 269.2 km. The road distance is 336 km.
You can take a bus from Heathrow Central Bus Station to Rose and Crown via Swansea Bus Station Stand B in around 6h 5m.
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