Timetable

Train route

Travel guide

Cheap train tickets

Explore cheap prices from Cardiff to Portsmouth

Here are this week's cheapest tickets from Cardiff to Portsmouth, along with train details. Our users discover these prices, which are updated daily. Given the frequent price changes, please refer to the latest update.

£13.00

Sat31May

£13.00

Sun1Jun

£13.00

Mon2Jun

£13.00

Tue3Jun

£13.00

Wed4Jun

£13.00

Thu5Jun

£13.00

Fri6Jun

View More Trains 

*Price changes due to the real-time price fluctuations, please refer to the latest price.

Cardiff to Portsmouth train prices and times

Planning a journey from Cardiff to Portsmouth? Trip.com offers train tickets starting from as low as £13.00, with average prices for this route around £14.00. To ensure you get the most affordable fares, we suggest exploring alternatives like split tickets.



Sat, May 31
From £13.00
Sun, Jun 1
From £13.00
Mon, Jun 2
From £13.00
Tue, Jun 3
From £13.00
Wed, Jun 4
From £13.00
Thu, Jun 5
From £13.00
Fri, Jun 6
From £13.00



Departs	Arrives	Duration	Find Tickets
05:14 Cardiff Central	09:13 Portsmouth & Southsea	3h 59m, No direct	Find Tickets
06:30 Cardiff Central	09:46 Portsmouth & Southsea	3h 16m, Direct	Find Tickets
07:27 Cardiff Central	10:46 Portsmouth & Southsea	3h 19m, Direct	Find Tickets
08:27 Cardiff Central	11:46 Portsmouth & Southsea	3h 19m, Direct	Find Tickets
09:28 Cardiff Central	12:46 Portsmouth & Southsea	3h 18m, Direct	Find Tickets
10:30 Cardiff Central	13:46 Paris	3h 16m, Direct	Find Tickets View More Trains

Cardiff to Portsmouth train route details

First train

05:14

Last train

20:30

Departure station

Cardiff

Arrival station

Portsmouth

Journey time

3h 15m

Distance

102 miles

Price

£13.00*

Train Operators

Great Western Railway, South Western Railway

How to book cheap train tickets from Cardiff to Portsmouth

Travelling in off-peak train times

Off-Peak train tickets are generally cheaper than peak-time tickets, allowing travel outside morning (06:30-09:30) and evening (16:00-19:00) rush hours on weekdays. If your schedule allows for flexibility, choosing off-peak times for your trip from Cardiff to Portsmouth can result in significant cost savings.

Using the Railcard for 1/3 off

With a Railcard, you can save up to 1/3 on most rail fares. There are different types of Railcards available, such as the 16–25 Railcard, the Family & Friends Railcard, and the Senior Railcard, each catering to specific groups of travellers. You can discover more about Railcards here.

Split Tickets to save an average extra 30%

Splitting tickets involves buying separate, cheaper tickets for different parts of your journey on the same train instead of just one ticket for the entire trip. For instance, if you're travelling from Cardiff to Portsmouth, you might find that purchasing a ticket from A to C, then C to B costs less than a direct ticket. This method is perfectly legal and often doesn’t require leaving your seat.

Book in advance to save an average of 61%

Did you know that purchasing Advance Tickets can significantly reduce your travel expenses? On average, these tickets can save you an impressive 61% on fares. The best part is that the earlier you book (ideally up to 12 weeks in advance), the greater the savings!

Group travels to save 1/3

If you are planning a trip with a group of three to nine people, take advantage of ⅓ off standard fares with group travel discounts, offered by many train companies, perfect for journeys with your family, friends, or colleagues.

Cardiff to Portsmouth train ticket types

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

Off-Peak & Super Off-Peak tickets
󱧢
Off-Peak tickets are cheaper and more flexible, allowing for travel during less busy times. Super Off-Peak tickets are even cheaper and are perfect for less conventional schedules.
Return train tickets
󱧢
This ticket includes both the outbound and return journeys, saving you the time and hassle of purchasing separate tickets. With just one ticket, you can travel smoothly along the same route.
Advance train tickets
󱧢
As one of the most cost-effective ticket options available, purchasing up to 12 weeks in advance can save you a considerable amount of money.
Season train tickets
󱧢
It’s a type of train ticket that allows unlimited travel within two stations for a week, a month, or a year. What’s more, it can save you more than 1/3 on train fares.





Why Book Train Tickets With Trip.com?

Best Price Promise
If you find trains for a cheaper price elsewhere, let us know and we'll refund the difference*
Split Tickets
Save an average of 30% on train fares by splitting your Cardiff to Portsmouth journey
National Rail Partners
Official train ticket sellers with 5-star customer service
No Booking Fees on the App
Only pay for your train travel – no hidden fees

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

Trains from Cardiff to Portsmouth from £13.00

Save an average of 30%* with Split Tickets

Cardiff to Portsmouth train prices and times

Cardiff to Portsmouth train route details