Previously seen trips
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Train | Cardiff Central | Southampton Central | No tags | ||||
| Train | Cardiff Central | Southampton Central | No tags | ||||
| Train | Cardiff Central | Southampton Central | No tags | ||||
| Train | Cardiff Central | Southampton Central | No tags | ||||
| Train | Cardiff Central | Southampton Central | No tags |
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 $88, it presents an excellent value for a comfortable ride.
Where are the popular train stations and stops in Cardiff and Southampton?
Train companies
Based on 42 reviews, the company was rated 4 stars on Busbud. Travellers were especially satisfied with the staff and the seats but often complained with the WiFi. Great Western Railway ticket prices on this trip start at $88
Frequently asked questions about travelling from Cardiff to Southampton by train
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 train ticket from Cardiff to Southampton?
The cheapest train tickets from Cardiff to Southampton start at $88. The average price for this train route is around $119. Busbud recommends booking your tickets in advance to increase your chances of getting the lowest possible price.
How long is the train ride from Cardiff to Southampton?
The average train trip from Cardiff to Southampton takes 2h 36m and covers 139 km. The quickest train gets you there in 2h 32m and is operated by Great Western Railway.
Which train operators serve the Cardiff to Southampton route?
Several major train operators serve this route, with 6 trains available per day.
What are the earliest and latest departure times for the train from Cardiff to Southampton?
The earliest train from Cardiff to Southampton departs at 7:27am. The latest train departs at 11:30pm.
Find cheapest prices for trains
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 Dec 11, 2025 with a price of $93To save money and be sure you have the best seat, it's a good idea to buy your train tickets from Cardiff to Southampton, as early as possible.
You can expect to pay from $93 to $115 for a train ticket from Cardiff to Southampton based on the last 2 days. You can expect to find the cheapest price for the trip at $103 which is on 2025-12-12.
