How much does a cheap train ticket from Southampton to Cardiff cost?

The average train ticket price from Southampton to Cardiff is $121. The best way to find cheap train tickets from Southampton to Cardiff is to book your tickets as early as possible. Prices tend to rise as your travel date approaches, so book in advance to secure the best prices!

How long is the trip from Southampton to Cardiff?

A train trip between Southampton and Cardiff is around 2h 38m, although the fastest train will take about 2h 34m. This is the time it takes to travel the 140 km that separates the two cities.

How many daily trains are there between Southampton and Cardiff?

The number of trains from Southampton to Cardiff can differ depending on the day of the week. On average, there are 5. Some trains are direct while others include transferring trains. Simplify your train trip from Southampton to Cardiff by comparing and selecting the train that fits your travel style and budget on Busbud.

Which train companies travel from Southampton to Cardiff?

When taking the train from Southampton to Cardiff, you can travel comfortably and safely with Great Western Railway.

Train Southampton to Cardiff from $48

Next train departures

Next departures for Southampton to Cardiff on November 18
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	3:11pm	Southampton Central	2h 38m	5:49pm	Cardiff Central	CheapestFastest
Train	4:11pm	Southampton Central	2h 38m	6:49pm	Cardiff Central	No tags
Train	5:11pm	Southampton Central	2h 40m	7:51pm	Cardiff Central	No tags

Last refresh of the prices: Last Thursday at 10:55 PM GMT.

Compare 3 ways to go from Southampton to Cardiff

We recommend carpooling

Among the sustainable travel choices, the carpool stands out as a good way to reach Cardiff. The journey takes about 3 hours 20 minutes, and with fares starting at just $51, it presents an excellent value for a comfortable ride.

1carpool per day

3h 20mAverage Duration

140 kmDistance

6kgCO₂ emissions

	Average Price	Average Duration	CO₂ emissions
Bus	Average Price$27 - $90	Average Duration7h 20m	CO₂ emissions 3kg CO₂e
Train	Average Price$49 - $414	Average Duration2h 38m	CO₂ emissions 3kg CO₂e
Carpool	Average Price$51 - $51	Average Duration3h 20m	CO₂ emissions 6kg CO₂e

Train companies

Great Western Railway

4/542 reviews

Staff5

Timeliness4.7

Cleanliness4.7

Wifi4

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 $49

GB train and bus companies:Amtrak, Trenitalia, Renfe, VIA Rail Canada, RegioJet, FlixTrain, CrossCountry

Where are the popular train stations and stops in Southampton and Cardiff?

Stops in Southampton

A - Southampton Airport

Stops in Cardiff

A - Cardiff Central

Frequently asked questions about travelling from Southampton to Cardiff by train

How much does a cheap train ticket from Southampton to Cardiff cost?
The average train ticket price from Southampton to Cardiff is $121. The best way to find cheap train tickets from Southampton to Cardiff is to book your tickets as early as possible. Prices tend to rise as your travel date approaches, so book in advance to secure the best prices!
How long is the trip from Southampton to Cardiff?
A train trip between Southampton and Cardiff is around 2h 38m, although the fastest train will take about 2h 34m. This is the time it takes to travel the 140 km that separates the two cities.
How many daily trains are there between Southampton and Cardiff?
The number of trains from Southampton to Cardiff can differ depending on the day of the week. On average, there are 5. Some trains are direct while others include transferring trains. Simplify your train trip from Southampton to Cardiff by comparing and selecting the train that fits your travel style and budget on Busbud.
Which train companies travel from Southampton to Cardiff?
When taking the train from Southampton to Cardiff, you can travel comfortably and safely with Great Western Railway.

Find cheapest prices for trains

Price is for a one-way ticket for one passenger and based on past searches.

Best price found

11-16

No data

11-17

No data

Today

$116

11-19

No data

11-20

No data

11-21

$84

11-22

No data

11-23

No data

The cheapest trip from Southampton to Cardiff was searched and found on Nov 21, 2025 with a price of $84

To save money and be sure you have the best seat, it's a good idea to buy your train tickets from Southampton to Cardiff, as early as possible.

You can expect to pay from $84 to $397 for a train ticket from Southampton to Cardiff based on the last 2 days. You can expect to find the cheapest price for the trip at $84 which is on 2025-11-21.