The average bus between Southwark and Swansea takes 5h 47m and the fastest bus takes 5h 3m. The bus service runs several times per day from Southwark 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 4 hours between Southwark and Swansea. The earliest departure is at 7:53 AM in the morning, and the last departure from Southwark is at 6:57 PM which arrives into Swansea at 12:15 AM. All services require a transfer at Green Park station and take an average of 5h 47m. The schedules shown below are for the next available departures.

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6h 9m • 1 changeWant to know about travelling from Southwark 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 Southwark to Swansea. However, there are services departing from Heathrow Central Bus Station and arriving at Swansea Bus Station Stand B via Swansea Bus Station Stand B. The journey, including transfers, takes approximately 5h 47m.
Southwark to Swansea bus services, operated by National Express, depart from Heathrow Central Bus Station.
Southwark to Swansea bus services, operated by National Express, arrive at Swansea Bus Station Stand B.
The distance between Southwark and Swansea is 265.7 km. The road distance is 300 km.
National Express operates a bus from Heathrow Central Bus Station to Swansea Bus Station Stand B hourly. Tickets cost £29–50 and the journey takes 4h 25m.