Next bus departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Bus | Cardiff (Gabalfa Interchange, o/s Clinic) | University of Southampton | Cheapest | ||||
 | Bus | Cardiff North Road (Friary Gardens) | Southampton University | Fastest | ||||
| Bus | Cardiff (Gabalfa Interchange, o/s Clinic) | University of Southampton | No tags | ||||
| Bus | Cardiff North Road (Friary Gardens) | Southampton | No tags | ||||
| Bus | Cardiff (Gabalfa Interchange, o/s Clinic) | University of Southampton | No tags |
Last refresh of the prices: Yesterday at 11:38 PM GMT.
Compare 3 ways to go from Cardiff to Southampton
Among the sustainable travel choices, the train stands out as a good way to reach Southampton. The journey takes about 2 hours 36 minutes, and with fares starting at just $48, it presents an excellent value for a comfortable ride.
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Where are the popular stops in Cardiff and Southampton?
Frequently asked questions about travelling from Cardiff to Southampton by bus
How far is Cardiff from Southampton?
The distance between Cardiff and Southampton is around 140 km (87 miles).
What are the departure and arrival locations for buses traveling from Cardiff to Southampton?
Buses traveling this route start their trip at Cardiff University (o/s Cathays Rail Stn), in Cardiff, and end it at Southampton Coach Station, in Southampton.
Find cheapest prices for buses
Price is for a one-way ticket for one passenger and based on past searches.
The cheapest trip from Cardiff to Southampton was searched and found on Nov 21, 2025 with a price of $24To save money and be sure you have the best seat, it's a good idea to buy your bus tickets from Cardiff to Southampton, as early as possible.
You can expect to pay from $24 to $92 for a bus ticket from Cardiff to Southampton based on the last 2 days. You can expect to find the cheapest price for the trip at $24 which is on 2025-11-21.
Usually National Express will charge you higher prices for tickets closer to the departure date. To find the best prices, you should be flexible on your date of travel.
