Compare 3 ways to go from Cardiff to Portsmouth.
Busbud recommends taking the bus from Cardiff to PortsmouthAmong the sustainable travel choices, the bus stands out as the good way to reach Portsmouth. The journey takes about 7 hours 17 minutes and with fares starting at just $14, it presents an excellent value for a comfortable ride.
Bus Cardiff to Portsmouth: Trip Overview
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Based on 29459 reviews, the company was rated 4.2 stars on Busbud. Travelers were especially satisfied with the ticket access and the staff but often complained with the wifi. National Express ticket prices on this trip start at $14
National Express Cardiff Portsmouth recent customer reviews
The triproblem was good all through the journey
Jenelle A.
Cardiff to Portsmouth Bus
Busbud helps you find a bus from Cardiff to Portsmouth. Get the best fare and schedule, book a round trip ticket or find buses with WiFi and electrical outlets.
We make sure you can find a bus service from Cardiff to Portsmouth from the most reliable bus companies operating this trip.
Discover how much the bus trip from Cardiff to Portsmouth will cost you. Use our filters and sorting features to find the cheapest bus tickets or luxury buses.
Where are the popular stops in Cardiff and Portsmouth?
Frequently asked questions for your trip Cardiff - Portsmouth
Find cheapest prices for buses
Price is for a one-way ticket for one passenger and based on past searches.
The cheapest trip from Cardiff to Portsmouth was searched and found on Aug 15, 2025 with a price of $13To save money and be sure you have the best seat, it's a good idea to buy your bus tickets from Cardiff to Portsmouth, as early as possible.
You can expect to pay from $13 to $71 for a bus ticket from Cardiff to Portsmouth based on the last 2 days. You can expect to find the cheapest price for the trip at $13 which is on 2025-08-15.
About Bus Travel
Bus Travel Tips
Make friends with the driver. They usually know a lot about your destination and may even recommend which side of the bus to sit on to get the best views on the road between Cardiff and Portsmouth!
Start sightseeing the minute your bus leaves the station. If you're on the night bus from Cardiff to Portsmouth, get comfy and count the stars.
Buses have one of the smallest carbon footprints of motorized transport modes. A bus going from Cardiff to Portsmouth will emit less CO2 than a car or an airplane.
Tune out to the fine sounds of your best music playlist on your bus trip from Cardiff to Portsmouth while indulging in miles on end of beautiful scenic views.
Did you know?
Did you know there are on average 4,400 intercity bus departures every day in the US only? This number has been growing for 9 years in a row, yay!
The bus driver with the longest career in the world drove more than 2,000,000 miles and is a happy World Record holder.
It takes 27 hours to go by bus from Lima to Cusco, one of the craziest bus trips on the world. This route is used daily by locals and backpackers.
What's the cheapest way to go from Cardiff to Portsmouth?
The bus is the cheapest travel choice for this destinationTop traveled bus routes
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Popular Buses Connecting Cardiff
Buses Leaving from Cardiff
- Bus from Cardiff to Southampton
- Bus Cardiff - Preston
- Cardiff - Edinburgh
- Bus from Cardiff to Newport
- Bus Cardiff - Heathrow
- Cardiff - Bristol
- Bus from Cardiff to Stansted
- Bus Cardiff - Gatwick
- Cardiff - Tenby
- Bus from Cardiff to Oxford
- Bus Cardiff - Manchester
- Cardiff - Bath
- Bus from Cardiff to Birmingham
- Bus Cardiff - Pembroke Dock
Buses Going to Cardiff
- Bus from Bristol to Cardiff
- Bus Swansea - Cardiff
- Heathrow - Cardiff
- Bus from Preston to Cardiff
- Bus Portsmouth - Cardiff
- Liverpool - Cardiff
- Bus from Stansted to Cardiff
- Bus Gatwick - Cardiff
- Brighton - Cardiff
- Bus from Bath to Cardiff
- Bus Birmingham - Cardiff
- Southampton - Cardiff
- Bus from Pembroke Dock to Cardiff
- Bus Manchester - Cardiff
Popular Buses Connecting Portsmouth
Buses Leaving from Portsmouth
- Bus from Portsmouth to Luton
- Bus Portsmouth - Cardiff
- Portsmouth - Middlesbrough
- Bus from Portsmouth to Heathrow
- Bus Portsmouth - Bristol
- Portsmouth - Southampton
- Bus from Portsmouth to London
- Bus Portsmouth - Stansted
- Portsmouth - Brighton
- Bus from Portsmouth to Bournemouth
- Bus Portsmouth - Bath
- Portsmouth - Winchester
- Bus from Portsmouth to Oxford
- Bus Portsmouth - Cambridge
- Portsmouth - Coventry
Buses Going to Portsmouth
- Bus from Coventry to Portsmouth
- Bus Middlesbrough - Portsmouth
- London - Portsmouth
- Bus from Bristol to Portsmouth
- Bus Cardiff - Portsmouth
- Birmingham - Portsmouth
- Bus from Heathrow to Portsmouth
- Bus Stansted - Portsmouth
- Southampton - Portsmouth
- Bus from Luton to Portsmouth
- Bus Gatwick - Portsmouth
- Brighton - Portsmouth
- Bus from Nottingham to Portsmouth
- Bus Bournemouth - Portsmouth
- Oxford - Portsmouth
Popular routes in this country
- Bus from London to Winchester
- Bus Glasgow - London
- Edinburgh - London
- Bus from Birmingham to London
- Bus London - Birmingham
- London - Oxford
- Bus from London to Cardiff
- Bus Cardiff - London
- Stansted - London
- Bus from Edinburgh to Glasgow
- Bus Leeds - London
- London - Leeds
- Bus from Leicester to London
- Bus London - Stansted
- London - Liverpool