Travel Information
Compare train and bus for Portsmouth to Cardiff
Omio recommends booking the train as it is the most popular option from Portsmouth to Cardiff among Omio's users. If you are prioritising price take the bus with prices starting from $17. For those with little time consider booking a train which can get you there in 3h 22m. In case you are seeking to minimise your carbon footprint the train is your best bet as it emits only 0.0 - 0.1kg. The ticket price range depends on the travel mode: a bus costs an average of $17, and a train costs an average of $43.
Distance: 101 miles (164 km)
Compare train with
Most popular Train | Bus |
|---|---|
$101 Average price | $43 Average price Cheapest |
3h 52m Average total duration Fastest 3h 22m Onboard + 30m Additional time* | 6h 32m Average total duration 6h 2m Onboard + 30m Additional time* |
0.0 - 0.1kg CO2 emissions Lowest | 0.2 - 0.4kg CO2 emissions |
![]() Most popular train company | ![]() Most popular bus company |
Direct Options | Direct Options |
Additional time: Average total travel duration to departure point, security checks and transfers.
Travel optionsfrom Portsmouth to Cardiff
How to get from Portsmouth to Cardiff by train, bus or flight.
Our recommendation
The best way to travel from Portsmouth to Cardiff is by taking a train because it’s the best combination of price and speed.
P22724Cheapest
P22724Fastest
P22724Other options
P22722
P22720
P61356+
C74876+
P22619Find all the dates and times for this journey by train, bus, flight, and ferry .
Compare prices and tickets Prices for trains, buses and flights
Compare train and bus prices over the next three weeks. See the best deals at a glance, find the lowest fares, and choose the option that fits your budget.
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FAQs: Travel from Portsmouth to Cardiff
Travel to Cardiff easily. Whether you want fast, cheap or something entirely different, our travel experts have collected everything you need to know so you can find the best option from Portsmouth to Cardiff.

This is compared to other travel options from Portsmouth to Cardiff:
A bus is $25 (€20) less than a train for this route with tickets for a train from Portsmouth to Cardiff costing on average $43 (€34).
Other travel options to Cardiff take longer:
Bus takes on average 6h 10m.
- Around 9 buses per day.
- Around 6 trains per day.
However, we recommend checking specific travel dates for your route between Portsmouth and Cardiff as scheduled services by train and bus can vary by season or day of the week.
- Trains mostly depart from Portsmouth & Southsea (PMS) and arrive in Cardiff Central (CDF).
- Buses mostly depart from Portsmouth, The Hard Interchange and arrive in Cardiff, Sophia Gardens.
- Ferries mostly depart from Lymington Pier and arrive in Lymington Pier.
- Travel with Great Western Rail, first_great_western to go to Cardiff by train.
- Travel with National Express to go to Cardiff by bus.
- 3 direct trains per day with Great Western Rail, first_great_western.
Travelling from Portsmouth to Cardiff: related information
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