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 (Gabalfa Interchange, o/s Clinic) | University of Southampton | Fastest | ||||
| Bus | Cardiff (Gabalfa Interchange, o/s Clinic) | University of Southampton | No tags | ||||
| Bus | Cardiff (Gabalfa Interchange, o/s Clinic) | University of Southampton | No tags | ||||
| Bus | Cardiff (Gabalfa Interchange, o/s Clinic) | University of Southampton | No tags |
Last refresh of the prices: Today at 20:57 GMT.
Compare 2 ways to travel 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 £13, it presents an excellent value for a comfortable ride.
Where are the popular stops in Cardiff and Southampton?
Stops in Cardiff
- A
Cardiff University (o/s Cathays Rail Stn)
50 Park Place (Bus Stop, o/s Cathays Rail Stn), Cardiff CF10 - B2 Sophia Cl, Cardiff CF11, UK
- C
Cardiff Coach Station - Sophia Gardens
22 Cathedral Rd, Cardiff CF11 9LJ, UK - D
Cardiff - Castle Street Bus Stop
21A Castle St, Cardiff CF10 1BT, UK - E
National Museum
Gorsedd Gardens Rd, Cardiff CF10 3NP, UK - F
Cardiff Bus Stop - Westgate
206 Westgate St, Cardiff CF10, UK
Stops in Southampton
- A20 Harbour Parade, Southampton SO15 1BA, UK
- B
Southampton Bus Stop
563 Vincents Walk, Southampton SO14, UK - C
W. Esplanade Bus Station - Southampton
Wyndham Pl, Southampton SO15, UK - D
Bus Stop Queensway
51-55 Above Bar St, Southampton, Southampton SO14 7DZ, UK - E
Southampton Central
Western Esplanade, Southampton SO15 1QJ, UK - F
Ferry Terminal
7 Town Quay, Southampton SO14 2ET, UK
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Frequently asked questions about travelling by bus from Cardiff to Southampton
Please note that timetables, routes, or operator details shown here may be updated or vary at the time of your journey.
How much is the bus ticket from Cardiff to Southampton?
The cheapest coach tickets from Cardiff to Southampton start from £14. The average price for this route is around £17. Busbud recommends that you book your tickets in advance for a better chance to get the lowest possible price.
How long is the bus journey from Cardiff to Southampton?
The average bus journey time from Cardiff to Southampton is 7h 12m, covering a distance of 87 miles. The fastest bus can take you there in 6h 20m and is operated by FlixBus.
Which bus companies service the Cardiff to Southampton route?
Several major bus companies operate on this route with 19 buses available per day, including services from National Express, FlixBus.
What is the earliest and latest departure time for the bus from Cardiff to Southampton?
The earliest bus departs from Cardiff to Southampton at 03:10. And the latest bus departs at 19:58.
What are the CO₂ emissions for the bus trip from Cardiff to Southampton?
A bus journey from Cardiff to Southampton produces an estimated 4 kg of CO₂, making it a highly eco-friendly choice and a mode of travel recommended by Busbud.
Which is the best bus company from Cardiff to Southampton?
According to Busbud customers, the highest-rated bus company on this route is National Express, with an average rating of 4.2 out of 5 stars based on 29871 reviews.
Which company has the best Wi-Fi from Cardiff to Southampton?
Based on Busbud reviews, the bus company National Express has the best Wi-Fi rating with a score of 3.4.
Which bus company offers the most punctual service from Cardiff to Southampton?
According to Busbud traveller reviews, the most punctual bus company on this route is National Express, with a punctuality rating of 4.1 out of 5 stars.
Which bus company has the cleanest buses from Cardiff to Southampton?
According to Busbud traveller reviews, the bus company with the cleanest buses on this route is National Express, with a cleanliness rating of 4.7 out of 5 stars.
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 30 Jan 2026 with a price of £13To 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 £13 to £52 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 £13, which is on 2026-02-05.
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.
What's the cheapest way to go from Cardiff to Southampton?
The Bus is the cheapest travel choice for this destination
