The average bus between Cardiff and Harefield takes 4h 28m and the fastest bus takes 3h 46m. There is a bus service every few hours from Cardiff to Harefield. 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 hourly between Cardiff and Harefield. The earliest departure is at 1:40 AM at night, and the last departure from Cardiff is at 4:40 PM which arrives into Harefield at 9:21 PM. All services require a transfer at Heathrow Central Bus Station and take an average of 4h 28m. The schedules shown below are for the next available departures.


4h 13m • 2 changes


4h 40m • 2 changes


4h 4m • 2 changes


4h 45m • 2 changes


4h 36m • 2 changes


3h 57m • 2 changes


4h 44m • 2 changes


4h 28m • 2 changes


4h 36m • 2 changes


3h 57m • 2 changes


4h 44m • 2 changes


4h 28m • 2 changes


4h 26m • 2 changes


4h 5m • 2 changes


4h 21m • 2 changes


3h 46m • 2 changes
Want to know about travelling from Cardiff to Harefield? 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 Cardiff to Harefield. However, there are services departing from Cardiff station and arriving at Harefield station via Heathrow Central Bus Station station. The journey, including transfers, takes approximately 4h 28m.
Cardiff to Harefield bus services, operated by National Express, depart from Sophia Gardens station.
Cardiff to Harefield bus services, operated by National Express, arrive at Heathrow Central Bus Station.
The distance between Cardiff and Harefield is 187 km. The road distance is 239 km.
National Express operates a bus from Sophia Gardens to Heathrow Central Bus Station hourly. Tickets cost £26–65 and the journey takes 2h 50m.