Bus Tickets from Cardiff to Portsmouth

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Previously seen trips

One passenger / one way

  • Departure time: December 15 at
    Departure city: Cardiff
    Departure location: Cardiff (Gabalfa Interchange, o/s Clinic)
    Arrival time: December 15 at
    Destination city: Portsmouth
    Destination location: Portsmouth University (Spinnaker Sports Centre)
    Operated by: National ExpressNational Express
    Vehicle: BusDuration:
  • Departure time: December 15 at
    Departure city: Cardiff
    Departure location: Cardiff (Gabalfa Interchange, o/s Clinic)
    Arrival time: December 15 at
    Destination city: Portsmouth
    Destination location: Portsmouth University (Spinnaker Sports Centre)
    Operated by: National ExpressNational Express
    Vehicle: BusDuration:
  • Departure time: December 15 at
    Departure city: Cardiff
    Departure location: Cardiff (Gabalfa Interchange, o/s Clinic)
    Arrival time: December 15 at
    Destination city: Portsmouth
    Destination location: Portsmouth University (Spinnaker Sports Centre)
    Operated by: National ExpressNational Express
    Vehicle: BusDuration:
  • Departure time: December 15 at
    Departure city: Cardiff
    Departure location: Cardiff (Gabalfa Interchange, o/s Clinic)
    Arrival time: December 16 at
    Destination city: Portsmouth
    Destination location: Portsmouth University (Spinnaker Sports Centre)
    Operated by: National ExpressNational Express
    Vehicle: BusDuration:
  • Departure time: December 15 at
    Departure city: Cardiff
    Departure location: Cardiff (Gabalfa Interchange, o/s Clinic)
    Arrival time: December 16 at
    Destination city: Portsmouth
    Destination location: Portsmouth University (Spinnaker Sports Centre)
    Operated by: National ExpressNational Express
    Vehicle: BusDuration:

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Compare 3 ways to go from Cardiff to Portsmouth

Bus
Average PriceUS$14 - US$59Average Duration7h 17m
4kg CO₂e5 out of 5 stars
CheapestMost eco-friendly
Train
Average PriceUS$78 - US$327Average Duration3h 19m
4kg CO₂e5 out of 5 stars
Carpool
Average PriceUS$32 - US$32Average Duration3h
7kg CO₂e4 out of 5 stars
Fastest
busbud logoBusbud recommends taking the bus from Cardiff to Portsmouth

Among the sustainable travel choices, the bus stands out as a good way to reach Portsmouth. The journey takes about 7 hours 17 minutes, and with fares starting at just US$14, it presents an excellent value for a comfortable ride.

10bus per day
7h 17mAverage Duration
US$14Cheapest ticket
4kgCO₂ emissions

Bus Cardiff to Portsmouth: Trip Overview

Average Ticket PriceUS$23
Average Bus Trip Duration7h 17m
Number of daily buses10
Earliest bus departure3:25am
Distance166 km
Latest bus departure7:58pm

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.

Frequently asked questions on the trip Cardiff - Portsmouth

  1. What is the distance between Cardiff and Portsmouth?

    The distance between Cardiff and Portsmouth is around 165 km (102 miles).

  2. What are the departure and arrival locations for buses traveling from Cardiff to Portsmouth?

    Buses traveling this route start their trip at Sophia Gardens, in Cardiff, and end it at The Hard Interchange, in Portsmouth.

Find cheapest prices for buses

Price is for a one-way ticket for one passenger and based on past searches.

Best price found
08-28
US$17
08-29
US$20
Today
US$16
08-31
US$17
09-01
US$15
09-02
US$12
09-03
US$13
09-04
US$12
busbud logoThe cheapest trip from Cardiff to Portsmouth was searched and found on Sep 4, 2025 with a price of US$12

To 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 US$12 to US$69 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 US$12 which is on 2025-09-04.

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?

busbud logoThe bus is the cheapest travel choice for this destination

Will you be returning to Cardiff by bus?

Bus from Portsmouth to Cardiff

You can also go to Portsmouth by train

Train from Cardiff to Portsmouth

Why choose Busbud?

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Busbud.com makes it easy for you to find, compare and book city-to-city bus tickets, all over the world. We save you the extra trip to the bus station. With several language and currency options available, Busbud seeks to cater to international bus travellers no matter where they are in the world. 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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