Next train departures
| 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 | CheapestFastest | ||||
| Train | Portsmouth Harbour | Cardiff Central | No tags | ||||
| Train | Portsmouth and Southsea | Cardiff Central | No tags | ||||
| Train | Portsmouth and Southsea | Cardiff Central | No tags |
Last refresh of the prices: Yesterday at 3:11 AM GMT.
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 $59
Frequently asked questions about travelling from Portsmouth to Cardiff by train
Please note that schedules, routes, or operator details shown here may be updated or vary at the time of your trip.
How much is the train ticket from Portsmouth to Cardiff?
The cheapest train tickets from Portsmouth to Cardiff start at $59. The average price for this train route is around $150. Busbud recommends booking your tickets in advance to increase your chances of getting the lowest possible price.
How long is the train ride from Portsmouth to Cardiff?
The average train trip from Portsmouth to Cardiff takes 3h 23m and covers 165 km. The quickest train gets you there in 3h 16m and is operated by Great Western Railway.
Which train operators serve the Portsmouth to Cardiff route?
Several major train operators serve this route, with 6 trains available per day.
What are the earliest and latest departure times for the train from Portsmouth to Cardiff?
The earliest train from Portsmouth to Cardiff departs at 7:24am. The latest train departs at 8:28pm.
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 15, 2025 with a price of $56To 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 $56 to $141 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 $56 which is on 2025-12-15.
