The average bus between Cardiff Bay and Swansea takes 2h 15m and the fastest bus takes 1h 33m. The bus service runs several times per day from Cardiff Bay to Swansea. 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 Bay and Swansea. The earliest departure is at 8:36 AM in the morning, and the last departure from Cardiff Bay is at 9:51 PM which arrives into Swansea at 11:50 PM. All services require a transfer at Cardiff Bus Interchange Bay 2 and take an average of 2h 15m. The schedules shown below are for the next available departures.


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2h 6m • 2 changesWant to know about travelling from Cardiff Bay to Swansea? 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 Bay to Swansea. However, there are services departing from Cardiff Bay station and arriving at Swansea station via Swansea Bus Station Stand B station. The journey, including transfers, takes approximately 2h 15m.
Cardiff Bay to Swansea bus services, operated by First South & West Wales, depart from Sophia Gardens station.
Cardiff Bay to Swansea bus services, operated by First South & West Wales, arrive at Swansea Bus Station Stand B.
The distance between Cardiff Bay and Swansea is 56.6 km. The road distance is 72 km.
National Express operates a bus from Sophia Gardens to Swansea Bus Station Stand B every 30 minutes. Tickets cost £8–20 and the journey takes 1h 15m.