Next bus departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Bus | Cardiff North Road (Friary Gardens) | Southampton University | 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: Last Friday at 5:24 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 $25, 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 from Cardiff to Southampton by bus
Please note that schedules, routes, or operator details shown here may be updated or vary at the time of your trip.
How much is the bus ticket from Cardiff to Southampton?
The cheapest bus tickets from Cardiff to Southampton start from $27. The average price for this route is around $35. Busbud recommends that you book your tickets in advance for a better chance to get the lowest possible price.
How long is the bus ride from Cardiff to Southampton?
The average bus travel time from Cardiff to Southampton is 7h 10m, covering a distance of 139 km. The quickest bus can get 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 are the earliest and latest departure times for the bus from Cardiff to Southampton?
The earliest bus departs from Cardiff to Southampton at 3:20am. And the latest bus departs at 7:58pm.
What are the CO₂ emissions for the bus trip from Cardiff to Southampton?
A bus trip from Cardiff to Southampton generates an estimated 3 kg of CO₂, making it a highly eco-friendly travel option and a mode of travel recommended by Busbud.
What 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 29818 reviews.
Which bus company has the best Wi-Fi from Cardiff to Southampton?
Based on Busbud reviews, the bus company National Express has the highest Wi-Fi rating with a score of 3.4.
Which bus company has the best on-time performance 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 Jan 10, 2026 with a price of $23To 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 $23 to $95 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 2026-01-13.
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.
