The average bus between Cardiff and Dunstable takes 5h 35m and the fastest bus takes 4h 22m. The bus service runs several times per day from Cardiff to Dunstable. 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 3 hours between Cardiff and Dunstable. The earliest departure is at 2:45 AM at night, and the last departure from Cardiff is at 4:40 PM which arrives into Dunstable at 5:32 AM. All services require a transfer at Heathrow Central Bus Station and take an average of 5h 35m. The schedules shown below are for the next available departures.


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4h 37m • 2 changesWant to know about travelling from Cardiff to Dunstable? 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 Dunstable. However, there are services departing from Cardiff station and arriving at Dunstable station via Heathrow Central Bus Station station. The journey, including transfers, takes approximately 5h 35m.
Cardiff to Dunstable bus services, operated by National Express, depart from Sophia Gardens station.
Cardiff to Dunstable bus services, operated by National Express, arrive at Airport Bus Station.
The distance between Cardiff and Dunstable is 188.6 km. The road distance is 292 km.
You can take a bus from Sophia Gardens to The Quadrant via Heathrow Central Bus Station and Airport Bus Station in around 4h 52m.