The average bus between Cardiff and Portishead takes 2h 24m and the fastest bus takes 2h 6m. The bus service runs several times per day from Cardiff to Portishead. 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 2 hours between Cardiff and Portishead. The earliest departure is at 4:30 AM at night, and the last departure from Cardiff is at 11:40 PM which arrives into Portishead at 1:51 AM. All services require a transfer, and take on average 2h 24m. The schedules shown below are for the next available departures.

2h 30m • 1 change

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2h 24m • 1 change

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2h 24m • 1 change

2h 12m • 1 change

2h 30m • 1 change

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2h 24m • 1 change

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3h 13m • 1 change

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2h 50m • 1 change

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2h 22m • 1 change

2h 27m • 1 change
Want to know about travelling from Cardiff to Portishead? 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 Portishead. However, there are services departing from Cardiff station and arriving at Portishead station via Bus Station station. The journey, including transfers, takes approximately 2h 24m.
Cardiff to Portishead bus services, operated by National Express, depart from Sophia Gardens station.
Cardiff to Portishead bus services, operated by National Express, arrive at Combe Road station.
The distance between Cardiff and Portishead is 28.4 km. The road distance is 88 km.
You can take a bus from Sophia Gardens to Combe Road via Bus Station in around 2h 8m.