Cardiff to Portsmouth bus with National Express

Thu, Feb 05
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The cheapest and fastest buses from Cardiff to Portsmouth

Showing times and prices for Feb 05

Cheapest price

$37

Average price

$38

Fastest journey

7 h 2 m

Average duration

7 h 6 m

Buses per day

3

Distance

164 km

Cheap tickets

The best way to find a cheap bus ticket from Cardiff to Portsmouth is to book your journey as far in advance as possible and to avoid traveling at rush hour.

The average ticket from Cardiff to Portsmouth will cost around $38 if you buy it on the day, but the cheapest tickets can be found for only $37.

Fast buses

It's difficult to get from Cardiff to Portsmouth without transferring at least once.

National ExpressNX509 · NX030
12:38PM7h12
Cardiff, University
07:50PMSouthsea, Clarence Esplanade
$371One-way
1 transfer
National ExpressNX507 · NX030
05:20AM7h05
Cardiff, University
12:25PMSouthsea, Clarence Esplanade
$371One-way
1 transfer
National ExpressNX509 · NX030
09:08AM7h02
Cardiff, University
04:10PMSouthsea, Clarence Esplanade
$401One-way
1 transfer

Travel Information

Compare train and bus for Cardiff to Portsmouth

Omio recommends booking the train as it is the most popular option from Cardiff to Portsmouth among Omio's users. If you are prioritising price take the bus with prices starting from €14. For those with little time consider booking a train which can get you there in 3h 19m. 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 €14, and a train costs an average of €43.

Distance: 101 miles (164 km)

Compare bus with

Bus
Most popular
Train

€28

Average price

Cheapest

€84

Average price

6h 39m

Average total duration

6h 9m

Onboard

+

30m

Additional time*

3h 49m

Average total duration

Fastest

3h 19m

Onboard

+

30m

Additional time*

0.2 - 0.4kg

CO2 emissions

0.0 - 0.1kg

CO2 emissions

Lowest
National Express

Most popular bus company

Great Western Rail

Most popular train company

Direct Options

Direct Options

Additional time: Average total travel duration to departure point, security checks and transfers.

Cardiff to Portsmouth Bus Timetables

OperatorDeparture TimeArrival TimeDurationDeparture daysCheapest price
Operator
National Express
Departure Time
05:20AM
Arrival Time
12:25PM
Duration
7h05
Departure days
Thu, Fri
Cheapest price
$34
Operator
National Express
Departure Time
06:00AM
Arrival Time
12:25PM
Duration
6h25
Departure days
Sun
Cheapest price
$33
Operator
National Express
Departure Time
07:38AM
Arrival Time
03:05PM
Duration
7h27
Departure days
Fri
Cheapest price
$47
Operator
National Express
Departure Time
07:53AM
Arrival Time
03:05PM
Duration
7h12
Departure days
Sun
Cheapest price
$34
Operator
National Express
Departure Time
09:08AM
Arrival Time
04:10PM
Duration
7h02
Departure days
Thu
Cheapest price
$40
Operator
National Express
Departure Time
10:08AM
Arrival Time
05:55PM
Duration
7h47
Departure days
Fri, Sun
Cheapest price
$37
Operator
National Express
Departure Time
12:23PM
Arrival Time
08:45PM
Duration
8h22
Departure days
Fri, Sun
Cheapest price
$52
Operator
National Express
Departure Time
12:38PM
Arrival Time
07:50PM
Duration
7h12
Departure days
Thu
Cheapest price
$37

Live departures

Cardiff to Portsmouth bus times

The table below shows live departures for Cardiff to Portsmouth buses for tomorrow, Thursday, February 5. You can also manually refresh the results below to see updated bus journeys.

Last updated at 8:19 PM
ProviderDepartsDurationArrivesTransfers
Tickets
national_expressNX507 · NX0305:20 AM Cardiff, University
7h05
12:25 PM Southsea, Clarence Esplanade1 transfer
national_expressNX509 · NX0309:08 AM Cardiff, University
7h02
4:10 PM Southsea, Clarence Esplanade1 transfer
national_expressNX509 · NX03012:38 PM Cardiff, University
7h12
7:50 PM Southsea, Clarence Esplanade1 transfer

This is the last bus of the day.

Find all the dates and times for this journey

Compare prices and tickets Cardiff to Portsmouth by train or bus

Compare train and bus prices over the next three weeks. See the best deals at a glance, find the lowest fares, and choose the option that fits your budget.

Thu
Feb 05
Fri
Feb 06
Sat
Feb 07
Sun
Feb 08
Mon
Feb 09
Tue
Feb 10
Wed
Feb 11
Thu
Feb 12
Fri
Feb 13
Sat
Feb 14
Sun
Feb 15
Mon
Feb 16
Tue
Feb 17
Wed
Feb 18

Why should you book Cardiff to Portsmouth buses with Omio?

National Express operates all buses services from Cardiff to Portsmouth.
Omio is an official ticket reseller for all your travel options from Cardiff to Portsmouth.

Why book with Omio vs National Express?

  • Compare with other providers: On Omio, you can not only buy tickets for National Express, but also compare tickets for the likes of to find the best option for your trip from Cardiff to Portsmouth.
  • Designed for International Travelers: Omio is in your language including 24/7 customer service and offers multiple payment options, including PayPal, credit cards, and bank transfer, in your preferred currency.
  • Compare all your options: Omio allows you to compare National Express with all available travel options, which are train and bus to ensure you get the best deal for traveling from Cardiff to Portsmouth.

Why book with Omio over Wanderu?

  • Multiple modes of transport: Omio allows you to compare travel options including train and bus to find the ideal travel option from Cardiff to Portsmouth.

Journey information

Overview: Bus from Cardiff to Portsmouth

United KingdomUnited Kingdom
United KingdomUnited Kingdom
Icon of bus

Buses from Cardiff to Portsmouth run on average 8 times per day, taking around 6h 9m. Cheap bus tickets for this journey start at $17 (€14) if you book in advance.

The earliest bus runs at 03:05, the last at 21:20. The fastest bus covers the 101 miles (164 km) distance in 6h 20m.

Fares are the lowest economy prices found on Omio. Early booking often means lower prices. Prices change daily and are subject to availability. Discount cards, coach trips, and booking fees are not included.
Price information
Distance
101 miles (164 km)
Average bus duration
6h 9m
Cheapest ticket price
$17 (€14)
Buses per day
8
Fastest bus
6h 20m
First bus
03:05
Last bus
21:20
Fares are the lowest economy prices found on Omio. Early booking often means lower prices. Prices change daily and are subject to availability. Discount cards, coach trips, and booking fees are not included.
Price information

Bus providers: National Express from Cardiff to PortsmouthYou can travel by bus between Cardiff to Portsmouth with National Express for as low as $17 (€14). When you search for schedules and tickets, Omio will show you the best journey

National Express

About
National Express is the UK’s leading long-distance coach company, operating over 550 services per day and serving more than 900 destinations nationwide. It also runs frequent services to major UK airports — including Heathrow, Gatwick, Stansted, Luton, and Bristol — 24 hours a day. All National Express coaches are air-conditioned and offer free Wi-Fi and onboard entertainment. Most vehicles are equipped with seat belts and power outlets at every seat, allowing you to charge your phone or laptop during your journey. Ticket options include Restricted Fare, Standard Fare, and Fully Flexible Fare, with the latter providing maximum flexibility for cancellations or changes.
Luggage & cancellation policy
Average Duration
6h 20m
Cheapest Price
$17 (€14)
National Express frequency
7 a day
Luggage included
Two medium-sized suitcases up to 20kg each and one small piece of hand luggage.
Additional luggage
10€ per additional bag.
Cancellation Policy
You can cancel your ticket up to 24 hours before departure for a refund minus a cancellation fee. Changes can be up to 24 hours before departure for a fee.
Amenities on board the bus
Wifi
Food sold onboard
Seat reservation
Toilets
USB plugs
Accessibility
Assistance; Priority seating; Accessible toilets.
Bikes
Folding Bikes are allowed; non-folding bikes are not allowed.
Learn more about National Express

FAQs: Bus from Cardiff to Portsmouth

Find answers to the most common questions about traveling from Cardiff to Portsmouth by bus. From journey times and ticket prices to direct connections, first and last departures, and even whether the route is scenic, our FAQs cover everything you need to plan your trip. Whether you’re looking for the fastest bus, the cheapest option, or tips for making the most of your visit at Portsmouth, this guide helps you travel smarter and with confidence.

FAQs
Cheap bus tickets from Cardiff to Portsmouth can start from as little as $17 (€14) when you book in advance. The average bus ticket price for Cardiff to Portsmouth is $35 (€28) ; however, prices vary depending on the time of day and class and they tend to be more expensive on the day.
The average journey time by bus from Cardiff to Portsmouth is 6h 20m to travel the 101 miles (164 km) long journey. Journey times can vary on weekends and holidays, so use our Journey Planner to search for a specific date.
The earliest bus from Cardiff to Portsmouth leaves at 3:05 AM. Plan your trip with the Journey Planner from Omio.
The latest bus from Cardiff to Portsmouth leaves at 9:20 PM.
There are 8 buses a day from Cardiff to Portsmouth which require at least one change with National Express. Schedules can vary on holidays or weekends with fewer buses.
When taking a bus from Cardiff to Portsmouth, you can count on National Express for the best way to get you to Portsmouth. You can also check all possible bus companies who offer a service between Cardiff and Portsmouth and compare the amenities they offer before buying a bus ticket.
A trip to Portsmouth from Cardiff is worth doing but not as a day trip with a journey time of 6h 20m each way. Check with Omio app the best way to travel.
The cheapest month for a bus from Cardiff to Portsmouth is August.
It's helpful to compare your options as there are 2 ways to travel between Cardiff and Portsmouth including taking a train and bus.
Yes, there are bathrooms on board the bus from Cardiff to Portsmouth for bus company National Express.
Yes, the following accessibility options are available when taking the bus from Cardiff to Portsmouth:
  • National Express
    • Assistance
    • Priority seating
    • Accessible toilets.
Whether you can cancel your bus ticket from Cardiff to Portsmouth depends on the bus companies:
  • National Express
    • You can cancel your ticket up to 24 hours before departure for a refund minus a cancellation fee. Changes can be up to 24 hours before departure for a fee.
Yes, bikes are allowed on board the bus with bus company National Express.
Tickets are often cheaper when booked early. Traveling during off-peak hours or on weekdays can help you save money. Sort results by price to quickly identify the most affordable options. Check for promotions or discounts available on our website and app.
Yes, there is food available to purchase on board the bus from Cardiff to Portsmouth.
Yes, the following luggage options are included when booking a bus ticket from Cardiff to Portsmouth:
  • National Express
    • Two medium-sized suitcases up to 20kg each and one small piece of hand luggage.
Yes, the following additional luggage options are available when booking a bus ticket from Cardiff to Portsmouth:
  • National Express
    • 10€ per additional bag.
Unfortunately, pets are not allowed on the bus from Cardiff to Portsmouth.
You can reserve your seat on the bus from Cardiff to Portsmouth with the following bus company: National Express
Yes, there are USB plugs on board the bus from Cardiff to Portsmouth with the following bus company: National Express.
Yes, there is Wifi on board the bus from Cardiff to Portsmouth with the following bus company: National Express.

popular bus stations

Popular bus stations from Cardiff to Portsmouth

Cardiff
Portsmouth
The major bus station for departures in Cardiff is Cardiff, Sophia Gardens. Find all the information you need to know about services, amenities and connections at Cardiff, Sophia Gardens for your trip from Cardiff to Portsmouth.
Cardiff, Sophia Gardens
information
Cardiff, North Road (Friary Gardens)
information
Cardiff, University
information

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