The average bus between Heathrow and Castle Cary takes 6h 54m and the fastest bus takes 4h 53m. The bus service runs several times per day from Heathrow to Castle Cary. 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 Castle Cary. The earliest departure is at 3:10 AM at night, and the last departure from Heathrow is at 9:20 PM which arrives into Castle Cary at 8:35 AM. All services require a transfer at Bus Station and take an average of 6h 54m. The schedules shown below are for the next available departures.



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6h 53m • 3 changes


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5h 40m • 3 changesWant to know about travelling from Heathrow to Castle Cary? 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 Castle Cary. However, there are services departing from Heathrow Central Bus Station and arriving at Bus Station via Bus Station. The journey, including transfers, takes approximately 6h 54m.
Heathrow to Castle Cary bus services, operated by National Express, depart from Heathrow Central Bus Station.
Heathrow to Castle Cary bus services, operated by First Bristol, Bath & the West, arrive at Bus Station.
The distance between Heathrow and Castle Cary is 149.5 km. The road distance is 171 km.
You can take a bus from Heathrow Central Bus Station to The Horsepond via Bus Station, Bus Station, and Crispin Hall in around 5h 23m.