The average bus between Cardiff and Mildenhall takes 7h 28m and the fastest bus takes 6h 55m. The bus service runs several times per day from Cardiff to Mildenhall. 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 Mildenhall. The earliest departure is at 3:25 AM at night, and the last departure from Cardiff is at 4:40 PM which arrives into Mildenhall at 12:25 AM. All services require a transfer, and take on average 7h 28m. The schedules shown below are for the next available departures.

7h 30m • 1 change

7h 10m • 1 change

7h 5m • 1 change

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7h 30m • 1 change

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7h 10m • 1 change

7h 15m • 1 change

6h 55m • 1 change

6h 55m • 1 change

7h • 1 change

7h 15m • 1 change

6h 55m • 1 change

6h 55m • 1 change

7h • 1 change

7h 15m • 1 change

6h 55m • 1 change

6h 55m • 1 change

7h • 1 change
Want to know about travelling from Cardiff to Mildenhall? 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 Mildenhall. However, there are services departing from Cardiff station and arriving at Mildenhall station via Heathrow Central Bus Station station. The journey, including transfers, takes approximately 7h 28m.
Cardiff to Mildenhall bus services, operated by National Express, depart from Sophia Gardens station.
Cardiff to Mildenhall bus services, operated by National Express, arrive at Bus Station.
Book your Cardiff to Mildenhall bus tickets online with National Express.
The distance between Cardiff and Mildenhall is 270.9 km. The road distance is 391 km.
You can take a bus from Sophia Gardens to Bus Station via Heathrow Central Bus Station in around 6h 50m.