Previously seen trips
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Train | Portsmouth and Southsea | Cardiff Central | No tags | ||||
| Train | Portsmouth and Southsea | Cardiff Central | No tags | ||||
| Train | Portsmouth and Southsea | Cardiff Central | No tags | ||||
| Train | Portsmouth and Southsea | Cardiff Central | No tags | ||||
| Train | Portsmouth and Southsea | Cardiff Central | No tags |
Compare 3 ways to go from Portsmouth to Cardiff
Among the sustainable travel choices, the carpool stands out as a good way to reach Cardiff. The journey takes about 3 hours 40 minutes, and with fares starting at just $25, it presents an excellent value for a comfortable ride.
Train companies
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 $60
Frequently asked questions about travelling from Portsmouth to Cardiff by train
How much does a cheap train ticket from Portsmouth to Cardiff cost?
The average train ticket price from Portsmouth to Cardiff is $151. The best way to find cheap train tickets from Portsmouth 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 Portsmouth to Cardiff?
A train trip between Portsmouth and Cardiff is around 3h 23m, although the fastest train will take about 3h 18m. This is the time it takes to travel the 165 km that separates the two cities.
How many daily trains are there between Portsmouth and Cardiff?
The number of trains from Portsmouth 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 Portsmouth to Cardiff by comparing and selecting the train that fits your travel style and budget on Busbud.
Which train companies travel from Portsmouth to Cardiff?
When taking the train from Portsmouth 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.
The cheapest trip from Portsmouth to Cardiff was searched and found on Dec 1, 2025 with a price of $107To save money and be sure you have the best seat, it's a good idea to buy your train tickets from Portsmouth to Cardiff, as early as possible.
You can expect to pay from $107 to $146 for a train ticket from Portsmouth to Cardiff based on the last 2 days. You can expect to find the cheapest price for the trip at $107 which is on 2025-12-01.
