The average bus between Heathrow and Merthyr Tydfil takes 6h 52m and the fastest bus takes 4h 42m. The bus service runs several times per day from Heathrow to Merthyr Tydfil. 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 every 4 hours between Heathrow and Merthyr Tydfil. The earliest departure is at 12:30 AM at night, and the last departure from Heathrow is at 6:30 PM which arrives into Merthyr Tydfil at 6:04 AM. All services require a transfer at Kingsway K14 and take an average of 6h 52m. The schedules shown below are for the next available departures.


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5h 16m • 2 changesWant to know about travelling from Heathrow to Merthyr Tydfil? 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 Merthyr Tydfil. However, there are services departing from Heathrow station and arriving at Merthyr Tydfil station via Kingsway K14. The journey, including transfers, takes approximately 6h 52m.
Heathrow to Merthyr Tydfil bus services, operated by National Express, depart from Heathrow Central Bus Station.
Heathrow to Merthyr Tydfil bus services, operated by National Express, arrive at Tredegar Lidl Stand 1 station.
The distance between Heathrow and Merthyr Tydfil is 204.4 km. The road distance is 247 km.
You can take a bus from Heathrow Central Bus Station to Trevithick Memorial via Kingsway K14, Market Square 20, and Tredegar Lidl Stand 1 in around 4h 52m.