Bus Tickets from Portsmouth to Cardiff

TomorrowAug 3
from US$25
MonAug 4
TueAug 5
WedAug 6
ThuAug 7
FriAug 8
SatAug 9
SunAug 10

Cheap buses leaving tomorrow

One passenger / one way

  • This trip is recommended because it is the: Cheapest
    Departure time: August 3 at
    Departure city: Portsmouth
    Departure location: Portsmouth University (o/s Students' Union)
    Arrival time: August 3 at
    Destination city: Cardiff
    Destination location: Cardiff (Gabalfa Interchange, o/s Roberts Optometrists)
    Operated by: National ExpressNational Express
    Vehicle: BusDuration:
  • This trip is recommended because it is the: Fastest
    Departure time: August 3 at
    Departure city: Portsmouth
    Departure location: Portsmouth University (o/s Students' Union)
    Arrival time: August 4 at
    Destination city: Cardiff
    Destination location: Cardiff (Gabalfa Interchange, o/s Roberts Optometrists)
    Operated by: National ExpressNational Express
    Vehicle: BusDuration:
  • Departure time: August 3 at
    Departure city: Portsmouth
    Departure location: Portsmouth University (o/s Students' Union)
    Arrival time: August 3 at
    Destination city: Cardiff
    Destination location: Cardiff (Gabalfa Interchange, o/s Roberts Optometrists)
    Operated by: National ExpressNational Express
    Vehicle: BusDuration:
  • Departure time: August 3 at
    Departure city: Portsmouth
    Departure location: Portsmouth University (o/s Students' Union)
    Arrival time: August 3 at
    Destination city: Cardiff
    Destination location: Cardiff (Gabalfa Interchange, o/s Roberts Optometrists)
    Operated by: National ExpressNational Express
    Vehicle: BusDuration:
  • Departure time: August 3 at
    Departure city: Portsmouth
    Departure location: Portsmouth University (o/s Students' Union)
    Arrival time: August 3 at
    Destination city: Cardiff
    Destination location: Cardiff (Gabalfa Interchange, o/s Roberts Optometrists)
    Operated by: National ExpressNational Express
    Vehicle: BusDuration:

Last refresh of the prices: Last Sunday at 2:23 PM BST.

Prices and availability are subject to change.

Accepted payments

  • Visa
  • MasterCard
  • American Express
  • China Union Pay
  • Diners Club Canada
  • Discover Click to Pay
  • JCB payment
  • Klarna (Pay over time)
  • Google Pay

Compare 3 ways to go from Portsmouth to Cardiff

Bus
Average PriceUS$14 - US$56Average Duration7h 21m
4kg CO₂e5 out of 5 stars
CheapestMost eco-friendly
Train
Average PriceUS$80 - US$328Average Duration3h 22m
4kg CO₂e5 out of 5 stars
Fastest
Carpool
Average PriceUS$33 - US$33Average Duration3h 40m
7kg CO₂e4 out of 5 stars
busbud logoBusbud recommends carpooling 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$33, it presents an excellent value for a comfortable ride.

1carpool per day
3h 40mAverage Duration
US$33Cheapest ticket
7kgCO₂ emissions

Bus Portsmouth to Cardiff: Trip Overview

Average Ticket PriceUS$26
Average Bus Trip Duration7h 21m
Number of daily buses9
Earliest bus departure3:05am
Distance166 km
Latest bus departure7:55pm

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.

Frequently asked questions on the trip Portsmouth - Cardiff

  1. How far is Portsmouth from Cardiff?

    Portsmouth and Cardiff are 165 km (102 miles) apart.

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

    Buses departing from The Hard Interchange in Portsmouth will take you to Sophia Gardens in Cardiff.

Find cheapest prices for buses

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

Best price found
07-31
US$52
08-01
US$34
Today
US$41
08-03
US$24
08-04
US$16
08-05
US$18
08-06
US$17
08-07
US$17
busbud logoThe cheapest trip from Portsmouth to Cardiff was searched and found on Aug 4, 2025 with a price of US$16

To 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$16 to US$70 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$16 which is on 2025-08-04.

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.

What's the cheapest way to go from Portsmouth to Cardiff?

busbud logoThe bus is the cheapest travel choice for this destination

Will you be returning to Portsmouth by bus?

Bus from Portsmouth to Cardiff

You can also go to Cardiff by train

Train from Portsmouth to Cardiff

Why choose Busbud?

The Best Way To Book Bus and Train Tickets

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

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Popular Buses Connecting Cardiff

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