Previously seen journeys
| 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 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 €15, it presents an excellent value for a comfortable ride.
Where are the popular train stations and stops in Cardiff and Southampton?
Southampton
- A
Southampton Airport
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 Wi-Fi. Great Western Railway ticket prices on this trip start at €15
Frequently asked questions about travelling from Cardiff to Southampton by train
Please note that timetables, routes, or operator details shown here may be updated or vary at the time of your journey.
How much does a train ticket cost from Cardiff to Southampton?
The cheapest train tickets from Cardiff to Southampton start from €15. The average price for this train route is around €69. Busbud recommends booking your tickets in advance for the best chance of getting the lowest possible price.
How long is the train journey from Cardiff to Southampton?
The average train journey time from Cardiff to Southampton is 2h 36m, covering a distance of 139 km. The fastest 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 run on this route with 7 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 07:27. And the latest train departs at 20:30.
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 24 Jan 2026 with a price of €14To 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 €14 to €72 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 €53, which is on 2026-01-30.