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 €15. For those with little time consider booking a train which can get you there in 3h 23m. 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 €15, and a train costs an average of €41.
Distance: 101 miles (164 km)
Compare train with
Most popular Train | Bus |
|---|---|
€83 Average price | €31 Average price Cheapest |
3h 53m Average total duration Fastest 3h 23m Onboard + 30m Additional time* | 6h 28m Average total duration 5h 58m 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 .
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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.

You can get to Cardiff from Portsmouth 2 different ways: train or bus.
The cheapest way to get from Portsmouth to Cardiff is by taking a bus with average ticket prices of $23 (€20) compared to other travel options to Cardiff:
A bus is $16 (€14) less than a train with an average ticket price of $38 (€35) from Portsmouth to Cardiff.
The fastest way from Portsmouth to Cardiff is by train with an average journey time of 3 h 16 min.
There are alternative travel options to Cardiff that take longer:
Getting to Cardiff by bus takes 6 h 15 min on average.
You should expect to travel around 102 miles (164 km) between Portsmouth and Cardiff.
The average frequency per day from Portsmouth to Cardiff is:
- 9 buses a day.
- Around 6 trains per day.
However, we recommend checking specific travel dates for your trip from Portsmouth to Cardiff as scheduled services by train or bus can vary by season or day of the week.
These are the most popular departure and arrival points from Portsmouth to Cardiff:
- Trains most often depart from Portsmouth at Portsmouth Harbour and arrive in Cardiff at Cardiff Central.
The following travel companies offer services from Portsmouth to Cardiff:
- Travel with National Express to go to Cardiff by bus. For a good deal on tickets, you can find National Express Portsmouth to Cardiff tickets on Omio for $23 (€20).
- Great Western Rail or first_great_western can get you to Cardiff by train. You can find a good deal for train tickets with Great Western Rail from Portsmouth to Cardiff for $38 (€35) on Omio.
Yes, there are direct services available from Portsmouth to Cardiff with the following travel companies:
- Direct trains with first_great_western with 2 direct trains per day.
Direct services tend to save you time and add more convenience in getting you to Cardiff as you won't need to transfer at another stop in between, so it's worth paying attention to before booking your tickets between Portsmouth and Cardiff.
Travelling from Portsmouth to Cardiff: related information
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