Previously seen trips
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Bus | University of Southampton | Cardiff University (o/s Cathays Rail Stn) | No tags | ||||
| Bus | University of Southampton | Cardiff (Gabalfa Interchange, o/s Roberts Optometrists) | No tags | ||||
| Bus | University of Southampton | Cardiff University (o/s Cathays Rail Stn) | No tags | ||||
| Bus | University of Southampton | Cardiff (Gabalfa Interchange, o/s Roberts Optometrists) | No tags | ||||
| Bus | University of Southampton | Cardiff University (o/s Cathays Rail Stn) | No tags |
Compare 2 ways to go from Southampton to Cardiff
Among the sustainable travel choices, the train stands out as the good way to reach Cardiff. The journey takes about 2 hours 39 minutes and with fares starting at just $34, it presents an excellent value for a comfortable ride.
Where are the popular stops in Southampton and Cardiff?
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
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
Compare bus companies
Frequently asked questions about traveling from Southampton to Cardiff 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 Southampton to Cardiff?
The cheapest bus tickets from Southampton to Cardiff start from $18. The average price for this route is around $33. 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 Southampton to Cardiff?
The average bus trip duration from Southampton to Cardiff is 7h 20m, covering a distance of 87 miles (139 km). The quickest bus can get you there in 6h 25m and is operated by National Express.
Which bus companies service the Southampton to Cardiff 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 Southampton to Cardiff?
The earliest bus departs from Southampton to Cardiff at 2:20am. And the latest bus departs at 7:15pm.
What are the CO₂ emissions for the bus trip from Southampton to Cardiff?
A bus trip from Southampton to Cardiff generates an estimated 3 kg of CO₂, making it a highly eco-friendly travel option and recommended mode of travel by Busbud.
What is the best bus company from Southampton to Cardiff?
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 29779 reviews.
Which bus company has the best Wi-Fi from Southampton to Cardiff?
Based on reviews on Busbud, the bus company National Express has the best Wi-Fi rating with a score of 3.4.
Which bus company has the most timely service from Southampton to Cardiff?
According to Busbud traveller reviews, the most timely 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 Southampton to Cardiff?
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 Southampton to Cardiff was searched and found on Dec 20, 2025 with a price of $27To save money and be sure you have the best seat, it's a good idea to buy your bus tickets from Southampton to Cardiff, as early as possible.
You can expect to pay from $27 to $86 for a bus ticket from Southampton to Cardiff based on the last 2 days. You can expect to find the cheapest price for the trip at $28 which is on 2025-12-23.
What's the cheapest way to go from Southampton to Cardiff?
The bus is the cheapest travel choice for this destination
