The average bus between Swansea and Southampton takes 6h 53m and the fastest bus takes 6h 10m. The bus service runs several times per day from Swansea to Southampton. 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 Swansea and Southampton. The earliest departure is at 2:10 AM at night, and the last departure from Swansea is at 3:20 PM which arrives into Southampton at 10:20 PM. All services require a transfer, and take on average 6h 53m. The schedules shown below are for the next available departures.

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6h 15m • 1 changeWant to know about travelling from Swansea to Southampton? 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 Swansea to Southampton. However, there are services departing from Swansea station and arriving at Southampton station via Heathrow Central Bus Station station. The journey, including transfers, takes approximately 6h 53m.
Swansea to Southampton bus services, operated by National Express, depart from Swansea Bus Station Stand B.
Swansea to Southampton bus services, operated by National Express, arrive at Coach Station.
Book your Swansea to Southampton bus tickets online with National Express.
The distance between Swansea and Southampton is 193.8 km. The road distance is 396 km.
You can take a bus from Swansea Bus Station Stand B to Coach Station via Heathrow Central Bus Station in around 6h 28m.