Trains from Cardiff to Portsmouth

Cardiff to Portsmouth train information

Cardiff Portsmouth train map

Train duration 3h34m
Arrival Portsmouth, England
Departure Cardiff, Wales
Distance 103 Miles
Lowest train price from £52.00
Average train price £73.00

Which train company can I use?

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

How long is the train?

There are 103 miles between the two cities and the average duration between Cardiff to Portsmouth is around 3h34m. Train travel is most of the time the fastest way to travel to Portsmouth from Cardiff, and it's also a greener option than driving or taking the plane.

What is the price of the train?

Looking at our data, the best fare to travel by train in the next month is £52.00. This price is based on an adult ticket and does not include the money you can save with a railcard.

Best prices for Cardiff to Portsmouth train tickets

from £52.00 MORE 3h21m
Other modes of transport available
Coach
from €18.00 MORE 6h39m

Cardiff - Portsmouth prices calendar

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

  june august   july
monday tuesday wednesday thursday friday saturday sunday
07
08
09
10
11
12
13

Distribusion--

FlixBus£35

omio£70

kombo€18

14

Distribusion--

FlixBus£29

omio£70

kombo€18

15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
01
02
03

Ticket prices and availability have been recorded in the last 72 hours from the data provided by our partners.

Train times Cardiff to Portsmouth

When are the next trains to Portsmouth?

Departure Arrival Duration Company
Today
Cardiff Central
12:25
Portsmouth & Southsea
15:46
3h21m Multiple companies
Cardiff Central
13:25
Portsmouth & Southsea
16:47
3h22m Multiple companies
Cardiff Central
14:25
Portsmouth & Southsea
17:46
3h21m Multiple companies
Tomorrow
Cardiff Central
15:30
Portsmouth & Southsea
18:48
3h18m Multiple companies
Cardiff Central
16:21
Portsmouth & Southsea
20:03
3h42m Multiple companies

The table above only shows the remaining services for today and will display a maximum of 10 train departures.

See all departures: Today / Tomorrow

Based on our data, 5 trains from Cardiff to Portsmouth are available today and 2 tomorrow. The first Cardiff Portsmouth train leaves at 09:18 and the last one leaves the station at 14:25. The first and last departure times can vary every day and there can be fewer services during weekends as well as public holidays. Rail operators may also adjust the number of trains during school holidays or depending on the season.

Best prices for Cardiff to Portsmouth trains

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

From To Price Departure on At Company Searched
Cardiff
Central
Portsmouth
& Southsea
£52.00 17/07/2025 17:27 1 month ago
Cardiff
Central
Portsmouth
& Southsea
£70.00 13/07/2025 14:25 2 days ago
Cardiff
Central
Portsmouth
& Southsea
£70.00 13/07/2025 12:25 2 days ago
Cardiff
Central
Portsmouth
& Southsea
£70.00 13/07/2025 13:25 2 days ago
Cardiff
Central
Portsmouth
& Southsea
£70.00 14/07/2025 15:30 2 days ago
Cardiff
Central
Portsmouth
& Southsea
£70.00 16/07/2025 16:27 21 days ago
Cardiff
Central
Portsmouth
& Southsea
£70.00 16/07/2025 15:30 21 days ago
Cardiff
Central
Portsmouth
& Southsea
£115.70 14/07/2025 16:21 2 days ago

Best prices for the next 180 days.

Cardiff Portsmouth train

Discount Cardiff - Portsmouth train tickets

The best way to spend less on your Cardiff Portsmouth train ticket must be to have a railcard. While regional railcards exist in some areas, National railcards enable you to make savings on most rail fares across the United Kingdom. Everyone is eligible to at least one of the railcard, even non-UK citizens. National railcards available: 16-25 railcard, Senior discount card, Two together railcard, Family and Friends discount card and Disabled persons railcard.

The main benefit of purchasing a railcard is that you only need a few trips to break even.

You will need to buy at least £88 of train tickets in a year for the railcard to be worth the investment. It corresponds to the price of the card, thirty pounds, divided by the saving, thirty four percent. On every train that you purchase after that, you will spare money.

For instance, train tickets from Cardiff to Portsmouth cost on average £72.54 (1). When dividing £88 by £72.54 (£88/£72.54 = 1.21), you can see that after only 2 one way trips from Portsmouth to Cardiff, the card will have paid for itself.

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 one year.

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

Train Journey Average price without railcard(1) With a railcard 34% off(2) Saving based on a one-way trip Number of return trips to pay off the cost
Cardiff to Portsmouth train £72.54 £48.36 £24.18 1.22

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

(2)Price calculated with an average reduction of 34% on train tickets fare

Other transport solution