Next departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Portsmouth University (o/s Students' Union) | Cardiff (Gabalfa Interchange, o/s Roberts Optometrists) | Cheapest | |||||
| Portsmouth University (o/s Students' Union) | Cardiff (Gabalfa Interchange, o/s Roberts Optometrists) | Fastest | |||||
| Portsmouth University (o/s Students' Union) | Cardiff (Gabalfa Interchange, o/s Roberts Optometrists) | No tags | |||||
| Portsmouth University (o/s Students' Union) | Cardiff (Gabalfa Interchange, o/s Roberts Optometrists) | No tags | |||||
| Portsmouth University (o/s Students' Union) | Cardiff (Gabalfa Interchange, o/s Roberts Optometrists) | No tags |
Last refresh of the prices: Today at 4:17 AM GMT.
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Compare 3 ways to travel 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 US$18, it presents an excellent value for a comfortable ride.
Bus Portsmouth to Cardiff: Trip Overview
Compare bus companies
Based on 29684 reviews, the company was rated 4.2 stars on Busbud. Travellers were especially satisfied with the ticket access and the staff but often complained with the Wi-Fi. National Express ticket prices on this trip start at US$16
National Express Portsmouth Cardiff recent customer reviews
Excellent service delivery and polite staffs but the toilet on the coach needs cleaning.
Olanike Mary A.
Portsmouth to Cardiff Bus
With Busbud, comparing and booking tickets for a bus from Portsmouth to Cardiff is a breeze. Browse through an extensive selection of bus fares and bus schedules to find the best deals.
We make sure you can find a bus service from Portsmouth to Cardiff from the most reliable bus companies operating this trip.
From cheap bus tickets to more luxurious buses travelling from Portsmouth to Cardiff, we offer a wide range of bus services to best suit your needs depending on how much your budget is.
Where are the popular stops in Portsmouth and Cardiff?
Frequently asked questions on the trip Portsmouth - Cardiff
How much does a bus ticket from Portsmouth to Cardiff cost?
The bus ticket price from Portsmouth to Cardiff starts at US$16. The best way to find cheap bus 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 bus ride from Portsmouth to Cardiff?
The average travel time between Portsmouth and Cardiff is around 7h 26m, although the fastest bus will take about 6h 11m. This is the time it takes to travel the 165 km that separates the two cities.
How many daily bus connections are there between Portsmouth and Cardiff?
The number of buses from Portsmouth to Cardiff can differ depending on the day of the week. On average, there are 9 on this route. Some buses run direct routes, while others have layovers. Simplify your bus trip from Portsmouth to Cardiff by comparing and selecting the bus that fits your travel style and budget on Busbud.
Which bus companies travel from Portsmouth to Cardiff?
When taking the bus from Portsmouth to Cardiff, you can travel comfortably and safely with National Express.
What are the departure and arrival stations when taking the bus from Portsmouth to Cardiff?
Buses travelling between Portsmouth and Cardiff leave from The Hard Interchange or Portsmouth (Rudmore Roundabout) and arrive at Sophia Gardens, Cardiff University (o/s Cathays Rail Stn), Cardiff Coach Station - Sophia Gardens.
Find cheapest prices for buses
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 03 Nov 2025 with a price of US$15To save money and be sure you have the best seat, it's a good idea to buy your bus tickets from Portsmouth to Cardiff as early as possible.
You can expect to pay from US$15 to US$68 for a bus ticket from Portsmouth to Cardiff based on the last 2 days. You can expect to find the cheapest price for the trip at US$15, which is on 2025-11-03.
About Bus Travel
Bus Travel Tips
Meet and talk to locals at the bus stations while travelling from Portsmouth to Cardiff.There is no better way to get inside travel information while exploring a new city than to go straight to its people.
Start sightseeing the minute your bus leaves the station. If you're on the night bus from Portsmouth to Cardiff, get comfy and count the stars.
Taking the bus creates the smallest carbon footprint compared to other modes of transport. Not to mention that buses will allow you to discover scenic gems from Portsmouth to Cardiff that are otherwise impossible to come by with a plane.
Create your own real life musical score by curating a personalized bus travel playlist - the perfect accompaniment to your bus ride from Portsmouth to Cardiff.
Did you know?
The bus driver with the longest career in the world drove more than 2,000,000 miles and is a happy World Record holder.
Did you know that 80% of the buses in North America are equipped with WiFi and power outlets ? And 60% of bus travellers have used their electronic device on board during 2014.
One of the longest bus route in the world goes all the way from Ontario to Alberta in Canada (with the same bus). This trip is 3,435 km or 2,135 miles long and the price is a bit under $100.
Top travelled bus routes
Why choose Busbud?
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Busbud helps you easily search, compare and book intercity bus tickets on a worlwide scale with our comprehensive list of bus routes and schedules. Use Busbud to book your trip online, in your own language and currency, wherever you are. Busbud partners with safe and reliable bus companies throughout the world such as Greyhound, Eurolines, ALSA, OUIBUS (BlaBlaBus), National Express and many others so you can buy tickets without a worry.
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Popular Buses Connecting Portsmouth
Buses Leaving from Portsmouth
- Bus from Portsmouth to Cardiff
- Coach Portsmouth - Middlesbrough
- Bus Portsmouth - Southampton
- Bus from Portsmouth to Bristol
- Coach Portsmouth - Heathrow
- Bus Portsmouth - London
- Bus from Portsmouth to Birmingham
- Coach Portsmouth - Saint Blazey
- Bus Portsmouth - Grampound
- Bus from Portsmouth to Dundee
- Coach Portsmouth - Fareham
- Bus Portsmouth - Landrake
- Bus from Portsmouth to Coventry
- Coach Portsmouth - Reading
- Bus Portsmouth - Tresillian
Buses Going to Portsmouth
- Bus from Coventry to Portsmouth
- Coach London - Portsmouth
- Bus Cardiff - Portsmouth
- Bus from Bristol to Portsmouth
- Coach Manchester - Portsmouth
- Bus Birmingham - Portsmouth
- Bus from Bournemouth to Portsmouth
- Coach Luton - Portsmouth
- Bus Twickenham - Portsmouth
- Bus from Heathrow to Portsmouth
- Coach Middlesbrough - Portsmouth
- Bus Ringwood - Portsmouth
- Bus from Southampton to Portsmouth
- Coach Oxford - Portsmouth
- Bus Brighton - Portsmouth
Popular Buses Connecting Cardiff
Buses Leaving from Cardiff
- Bus from Cardiff to Preston
- Coach Cardiff - Edinburgh
- Bus Cardiff - Newport
- Bus from Cardiff to London
- Coach Cardiff - Heathrow
- Bus Cardiff - Luton
- Bus from Cardiff to Salisbury
- Coach Cardiff - Kilgetty
- Bus Cardiff - Llanelli
- Bus from Cardiff to Penrith
- Coach Cardiff - Newquay
- Bus Cardiff - Bristol
- Bus from Cardiff to Dundee
- Coach Cardiff - Reading
- Bus Cardiff - Birmingham
Buses Going to Cardiff
- Bus from Bristol to Cardiff
- Coach Swansea - Cardiff
- Bus Preston - Cardiff
- Bus from Portsmouth to Cardiff
- Coach Luton - Cardiff
- Bus Liverpool - Cardiff
- Bus from Bournemouth to Cardiff
- Coach Southampton - Cardiff
- Bus Bath - Cardiff
- Bus from Pembroke Dock to Cardiff
- Coach Penzance - Cardiff
- Bus Oxford - Cardiff
- Bus from Leicester to Cardiff
- Coach Bridgend - Cardiff
- Bus Exeter - Cardiff