The average bus between Grays and Swansea takes 9h 52m and the fastest bus takes 6h 42m. The bus service runs several times per day from Grays 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 3 times a day between Grays and Swansea. The earliest departure is at 7:50 AM in the morning, and the last departure from Grays is at 5:35 PM which arrives into Swansea at 1:05 PM. All services require a transfer at West Ham and take an average of 9h 52m. The schedules shown below are for the next available departures.


8h 25m • 2 changes


8h 8m • 2 changes
Arrives next day


19h 30m • 2 changes


7h 30m • 2 changes


7h 18m • 2 changes
Arrives next day


7h 6m • 2 changes


7h • 2 changes


6h 42m • 2 changes
Arrives next day


6h 57m • 2 changes


7h • 2 changes


6h 55m • 2 changes
Arrives next day


7h 2m • 2 changes
Want to know about travelling from Grays 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 Grays to Swansea. However, there are services departing from Grays station and arriving at Swansea station via Swansea City Bus Station station. The journey, including transfers, takes approximately 9h 52m.
Grays to Swansea bus services, operated by Kent Fastrack, depart from London Heathrow Airport station.
Grays to Swansea bus services, operated by Kent Fastrack, arrive at Swansea City Bus Station.
Book your Grays to Swansea bus tickets online with Kent Fastrack, National Express and 2 other operators.
The distance between Grays and Swansea is 295.5 km. The road distance is 370 km.
FlixBus operates a bus from London Heathrow Airport to Swansea City Bus Station every 4 hours. Tickets cost £19–35 and the journey takes 4h 50m.