Trains from Cardiff to Southampton

Cardiff to Southampton train information

Search for your ticket on gopili to see the different companies for your train connecting Cardiff (East Wales) to Southampton (South East England). The services on board may change depending on the train operator.

On average, the journey takes approximately 2h33m by train covering a distance of 87 miles to get to Southampton from Cardiff. The duration may vary depending if your train is direct or if you need to make a change.

Prices will vary depending on the day and hour of travel and how far in advance you purchase your ticket.

Best prices for Cardiff to Southampton train tickets

Cardiff - Southampton prices calendar

Find the cheapest tickets to travel from Cardiff to Southampton by train, bus, ride sharing and plane.

Cardiff - Southampton: the best time to book cheap trains

Price of the ticket when booking in advance or at the last minute

The Prices for train tickets Cardiff to Southampton are increasing if you don't book early. According to our data, if you buy your train 3 days in advance, you can find tickets from £13 whereas when purchasing your seat on the day you're travelling, you will need to spend at least £38 for your train. Thus, you may save 66% on the price of your ticket by booking 3 days in advance instead of on the day you're travelling.

The figures are based on the best fares found over the past 6 months when buying in advance versus at the last minute.

Best prices for Cardiff to Southampton trains

We compare train ticket for all major companies to travel between Cardiff and Southampton by train and find the best prices for the coming days. Take a look at the prices of train tickets Southampton to Cardiff and find the best deal for your outbound journey.

Discount Cardiff - Southampton train tickets

National Railcards can save you a lot if you're using the train. Depending on your age and your situation, you are able to get one of the five existing railcards: Disabled persons, 16-25, Two together, Senior or Family and Friends railcards. Railcards can help you pay less for your Cardiff Southampton train ticket.

When buying a railcard, you aim to break even after several trips. But is it really profitable when taking the train from Cardiff to Southampton? Use your calculator, taking into account:

A = the railcard cost (i.e.: £30)

B = average price cut with the railcard (i.e.: 34%)

C = average cost for a Cardiff Southampton ticket (i.e.: £50.00)(1)

The first step is to divide A by B: this will show you the budget from which the card will be efficient. You can now divide that number by C. It will give you the approximate number of trips needed across the year to start saving money.

In our example, A/B = £30/34% = £88.00. Then, 88/£50.00 = 1.76. Your railcard will be profitable if you're doing around 2 trips from Cardiff to Southampton (one way journey).

The price to buy a Disabled persons railcard is £20 while it will cost you £30 to have the 16-25, Two together, Family and Friends or the Senior railcard. All of them enable you to save 34% off most adult fares for an entire year.

⁽¹⁾Average prices observed over the last 6 months for one way journey