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Cardiff Bay to Southampton Train prices and times

Looking to travel from Cardiff Bay to Southampton? You can buy train tickets with Trip.com for as low as SAR 121.16, with average prices for this route around SAR 305.00.

To get the best deals, we recommend buying in advance and researching alternatives such as split tickets.

View More Trains
DepartureArrivalOperator
Find Tickets
12:08
2h 56m, Changes required
Cardiff Bay
15:04
Southampton Central
Transport for WalesGreat Western Railway
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12:56
2h 39m, Changes required
Cardiff Bay
15:35
Southampton Airport Parkway
Transport for WalesGreat Western RailwayCrossCountry
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13:08
2h 54m, Changes required
Cardiff Bay
16:02
Southampton Central
Transport for WalesGreat Western Railway
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13:56
2h 40m, Changes required
Cardiff Bay
16:36
Southampton Airport Parkway
Transport for WalesGreat Western RailwayCrossCountry
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14:08
2h 54m, Changes required
Cardiff Bay
17:02
Southampton Central
Transport for WalesGreat Western Railway
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14:56
2h 39m, Changes required
Cardiff Bay
17:35
Paris
Transport for WalesGreat Western RailwayCrossCountry
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Cardiff Bay to Southampton Train Route Details

First train
First train
07:08
Last train
Last train
23:54
Departure station
Departure station
Cardiff Bay
Arrival station
Arrival station
Southampton
Journey time
Journey time
2h 38m
Distance
Distance
138 km
Price
Price
SAR 121.16*
Train operators
Train operators
CrossCountry, Great Western Railway, South Western Railway

How to book cheap train tickets from Cardiff Bay to Southampton

Traveling in off-peak train times

Traveling in off-peak train times

Off-Peak train tickets are generally cheaper than peak-time tickets, allowing travel outside morning (6:30 AM–9:30 AM) and evening (4:00 PM–7:00 PM) rush hours on weekdays. If your schedule allows for flexibility, choosing off-peak times for your trip from Cardiff Bay to Southampton can result in significant cost savings.
Get 1/3 off with a Railcard

Get 1/3 off with a Railcard

You can choose a Railcard to help you save up to 1/3 on fares from Cardiff Bay to Southampton for various reasons, such as your age (including the 16–25 Railcard or Senior Railcard) or options geared towards group travel (Family & Friends Railcard and Two Together Railcard). Discover more here.
Split tickets to save an average extra 30%

Split tickets to save an average extra 30%

Another option to consider is splitting your tickets, which can save you around an extra 30% on fares. Instead of purchasing a direct ticket from Cardiff Bay to Southampton, you can split the route into two legs: A to C and C to B. This often turns out to be more affordable than buying a direct ticket, and you won't even need to leave the train… or often your seat!
Book in advance to save an average of 61%

Book in advance to save an average of 61%

Advance Tickets are usually released up to 12 weeks before the travel date and can be significantly cheaper than tickets purchased closer to departure. By planning your trip from Cardiff Bay to Southampton ahead of time and securing your tickets early, you can save up to 61% on the cost of your travel.
Travel in a group to save 1/3

Travel in a group to save 1/3

If you are traveling in a group, be sure to check out group travel discounts. Many train companies offer a ⅓ off standard fares for groups of three to nine people, making traveling from Cardiff Bay to Southampton more affordable for families, friends, or colleagues planning a trip together.

Cardiff Bay to Southampton train ticket types

Here are different ticket types available for this route, each with their own benefits and restrictions. Here are the options to consider:

Why Book Train Tickets With Trip.com?

  • Split Tickets

    Best price promise

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  • Split Tickets

    Split Tickets

    Save an average of 30% on train fares by splitting your Cardiff Bay to Southampton journey

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*After comparing the full year of 2023 for SplitTickets and full-price tickets on Trip.com, the average savings rate for SplitTickets is 30%.