The average bus between St Margarets and Cardiff takes 4h 30m and the fastest bus takes 3h 48m. There is a bus service every few hours from St Margarets to Cardiff. 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 St Margarets and Cardiff. The earliest departure is at 6:04 AM in the morning, and the last departure from St Margarets is at 11:44 PM which arrives into Cardiff at 4:00 AM. All services require a transfer at Hounslow Bus Station and take an average of 4h 30m. The schedules shown below are for the next available departures.


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Want to know about travelling from St Margarets to Cardiff? 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 St Margarets to Cardiff. However, there are services departing from St Margarets station and arriving at Cardiff station via Sophia Gardens. The journey, including transfers, takes approximately 4h 30m.
St Margarets to Cardiff bus services, operated by First Bus London, depart from Heathrow Central Bus Station.
St Margarets to Cardiff bus services, operated by First Bus London, arrive at Sophia Gardens station.
The distance between St Margarets and Cardiff is 197.9 km. The road distance is 236 km.
National Express operates a bus from Heathrow Central Bus Station to Sophia Gardens hourly. Tickets cost £25–65 and the journey takes 2h 55m.