Bus from Cardiff to Portsmouth from $15

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Compare all timetables for the bus from Cardiff to Portsmouth

Here is a selection of the cheapest bus trips from the schedule from Cardiff to Portsmouth from various bus operators like National Express for the next days.
today
tomorrow
from $19
Tuesday
from $20
Wednesday
Thursday
from $17
Friday
from $21
Saturday
from $15

Cheapest bus trips tomorrow

Prices are for one way and one person
  • National Express
    7h 15m
    0
    3:45 PM
    Cardiff
    Coach Station
    11:00 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $19
  • National Express
    7h 0m
    0
    5:30 PM
    Cardiff
    Coach Station
    12:30 AM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $19
  • National Express
    7h 25m
    0
    7:30 AM
    Cardiff
    Coach Station
    2:55 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $27
  • National Express
    6h 30m
    0
    7:45 PM
    Cardiff
    Coach Station
    2:15 AM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $27
  • National Express
    7h 35m
    0
    1:00 PM
    Cardiff
    Coach Station
    8:35 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $31

Cheapest bus trips Tuesday

Prices are for one way and one person
  • National Express
    7h 45m
    0
    4:45 PM
    Cardiff
    Coach Station
    12:30 AM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $20
  • National Express
    7h 0m
    0
    3:30 PM
    Cardiff
    Coach Station
    10:30 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $27
  • National Express
    7h 0m
    0
    7:15 PM
    Cardiff
    Coach Station
    2:15 AM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $27
  • National Express
    6h 30m
    0
    2:55 PM
    Cardiff
    Coach Station
    9:25 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $52
  • National Express
    7h 0m
    0
    9:00 AM
    Cardiff
    Coach Station
    4:00 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $55

Cheapest bus trips Thursday

Prices are for one way and one person
  • National Express
    7h 45m
    0
    4:45 PM
    Cardiff
    Coach Station
    12:30 AM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $17
  • National Express
    7h 0m
    0
    7:15 PM
    Cardiff
    Coach Station
    2:15 AM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $17
  • National Express
    7h 0m
    0
    3:30 PM
    Cardiff
    Coach Station
    10:30 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $27
  • National Express
    7h 0m
    0
    9:00 AM
    Cardiff
    Coach Station
    4:00 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $35
  • National Express
    7h 10m
    0
    12:30 PM
    Cardiff
    Coach Station
    7:40 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $38

Cheapest bus trips Friday

Prices are for one way and one person
  • National Express
    7h 0m
    0
    5:30 PM
    Cardiff
    Coach Station
    12:30 AM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $21
  • National Express
    7h 15m
    0
    3:45 PM
    Cardiff
    Coach Station
    11:00 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $24
  • National Express
    6h 30m
    0
    7:45 PM
    Cardiff
    Coach Station
    2:15 AM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $24
  • National Express
    7h 35m
    0
    1:00 PM
    Cardiff
    Coach Station
    8:35 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $34
  • National Express
    7h 25m
    0
    7:30 AM
    Cardiff
    Coach Station
    2:55 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $55
  • Did you know that if you travel from Cardiff to Portsmouth via Bristol, you can save more than $2? You can find the corresponding connections below.
    • FlixBus
      8h 5m
      0
      12:15 PM
      Cardiff
      Kingsway Bus Stop
      1:30 PM
      Bristol
      Coach Station
      0
      FlixBus
      Economy
      $7
      • Waiting Time 0h 45m
    • National Express
      6h 5m
      0
      2:15 PM
      Bristol
      Coach Station
      8:20 PM
      Portsmouth
      The Hard Interchange
      0
      National Express
      Economy
      $12
    Travel time is 1h 35m longer, but you will save $2

Cheapest bus trips Saturday

Prices are for one way and one person
  • National Express
    7h 0m
    0
    4:00 PM
    Cardiff
    Coach Station
    11:00 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $15
  • National Express
    7h 0m
    0
    5:30 PM
    Cardiff
    Coach Station
    12:30 AM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $15
  • National Express
    7h 20m
    0
    1:00 PM
    Cardiff
    Coach Station
    8:20 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $16
  • National Express
    6h 30m
    0
    7:45 PM
    Cardiff
    Coach Station
    2:15 AM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $21
  • National Express
    6h 20m
    0
    5:55 AM
    Cardiff
    Coach Station
    12:15 PM
    Portsmouth
    The Hard Interchange
    0
    National Express
    Economy
    $31

Frequency of bus connections between Cardiff and Portsmouth

See here how frequent the connections between Cardiff and Portsmouth are, during different times and days of the week.
Saturday is the busiest day, with more than 11 daily buses from Cardiff to Portsmouth. Tuesday has instead the fewest connections, with only 9 daily coaches between Cardiff and Portsmouth.
The busiest time of the day is the Afternoon, with 23 buses from Cardiff to Portsmouth, while Evening sees the fewest connections between Cardiff and Portsmouth, with 5 offers.

Enjoy these deals on your way from Cardiff to Portsmouth

National Express-Ends soon! Get 25% off bus tickets. Travel by Aug 31.
National Express

Ends soon! Get 25% off bus tickets. Travel by Aug 31.

Facts about the bus from Cardiff to Portsmouth

Compare all providers like National Express that travel 9 times every day by bus from Cardiff to Portsmouth in one click! Book your bus ticket from Cardiff to Portsmouth starting from $15!

Cheapest Bus $15
Fastest Bus 5h 25m
Earliest Bus 5:25 AM
Latest Bus 7:45 PM
Daily Bus Routes 9 Ø
Distance 101.8 miles
Bus Companies National Express

Cheapest bus connections from Cardiff to Portsmouth

Every day, 9 buses from 1 bus companies leave Cardiff for Portsmouth: in the table below, you will find the cheapest prices for a bus ticket for this route, starting from 06/23/2025 and for the following days.

Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday 06/22
Monday 06/23
$19
Tuesday 06/24
$20
Wednesday 06/25
Thursday 06/26
$17
Friday 06/27
$21
Saturday 06/28
$15
Sunday 06/29
$23
Monday 06/30
$15
Tuesday 07/01
$15
Wednesday 07/02
Thursday 07/03
$15
Friday 07/04
$15
Saturday 07/05
$47
Sunday 07/06
$17
Monday 07/07
$15
Tuesday 07/08
Wednesday 07/09
$15
Thursday 07/10
$15
Friday 07/11
Saturday 07/12
$15
Sunday 07/13
$15
Monday 07/14
Tuesday 07/15
$15
Wednesday 07/16
$15
Thursday 07/17
Friday 07/18
$15
Saturday 07/19

The cheapest time to travel from Cardiff to Portsmouth

See here on which day and which time of the day you can find the cheapest bus ticket from Cardiff to Portsmouth, for the next 30 days.
With a price starting from $15, Saturday is the cheapest day for a bus from Cardiff to Portsmouth. Friday instead is the most expensive day with prices starting from $21.
Afternoon is the cheapest day time for bus tickets from Cardiff to Portsmouth, with $15. Night is the most expensive time of the day with prices starting from $31.

How to save money travelling from Cardiff to Portsmouth

Travel can be expensive, but it doesn't need to be! Do you want to avoid paying a terrible price for your trip? Then follow these quick steps to save money:

Book the ticket from Cardiff to Portsmouth in advance! The earlier you book, the cheaper usually the price is. Also, you will be sure to have a place on the bus from Cardiff to Portsmouth, compared instead if you buy it at the last moment, or directly at the station.

If you can, avoid travelling at peak times. Instead of weekend, try travelling during the week. Travelling in the evening or at night it’s also cheaper, and later buses from Cardiff to Portsmouth are also emptier.

Beloved bus companies from Cardiff to Portsmouth

These are the most booked bus companies between Cardiff to Portsmouth from our users.

National Express from Cardiff to Portsmouth

National Express

Here you will find the key facts about the National Express bus route Cardiff to Portsmouth:

Cheapest Price $15
Fastest Bus 5h 25m
Earliest Bus 5:25 AM
Last Bus 7:45 PM
Daily Connections 9 Ø
Found on 6/20/2025

All bus stations and stops in Cardiff and Portsmouth

In the map below, you can see where to find all bus stations in Cardiff and Portsmouth.

Compare the bus with other modes of transport

The bus is often the cheapest mode of transport, while other modes like train or flight are faster. Looking for quicker alternatives to travel from Cardiff to Portsmouth? Compare all modes of transports from Cardiff to Portsmouth.

Service and Comfort on the bus from Cardiff to Portsmouth

Want to know which seat classes are available on the buses from Cardiff to Portsmouth? Or which bus companies serve the route Cardiff to Portsmouth? Below you will find answers to your questions.

FAQs about the Cardiff to Portsmouth bus

How much does a Cardiff Portsmouth bus trip cost?

This depends on, among other things, the day and time of travel. The cheapest trip is available from $15 and takes 7h 0m to reach Portsmouth. Compare offers to save money!

How much could I save by comparing buses from Cardiff to Portsmouth?

This route is offered by 1 companies with a range of ticket prices between $15 and $87. Thus, we recommend booking your ticket as early as possible to make sure you get the cheapest bus ticket to Portsmouth.

On average, how many connections are available from Cardiff to Portsmouth each day?

Every day, the Cardiff to Portsmouth bus route is served by approximately 9 connections. With our search, you can compare bus times to find the perfect trip.

How long does a bus journey from Cardiff to Portsmouth take?

The fastest bus from Cardiff to Portsmouth is offered by National Express and takes 5h 25m. Bus tickets for this connection cost $57. In this context, bear in mind that the journey can take longer due to traffic.

What time is the first bus from Cardiff to Portsmouth?

The earliest bus arriving in Portsmouth from Cardiff starts at 5:25 AM. However, information regarding departure times may differ on weekends and holidays. Simply use our search to find exact times for your planned travel date.

What time is the last bus from Cardiff to Portsmouth?

The latest bus trip departing from Cardiff for Portsmouth starts at 7:45 PM. Please note that departure times may differ on weekends and holidays. So just use our search to find the exact times for your planned travel date.

Which bus companies operate the Cardiff Portsmouth route?

When traveling by bus from Cardiff to Portsmouth, passengers can travel with National Express. With our search, you can compare all available bus tickets to book the one that works for you.

Is there a direct bus between Cardiff and Portsmouth?

You can check all the direct connections between Cardiff and Portsmouth by using our search and looking at the Changes section in our filters. These are some of the companies which offer a direct bus: National Express.

What can I take with me on the Cardiff to Portsmouth bus route?

Depending on which provider you travel with, what you're allowed to bring with you can vary. Generally, you can take a suitcase and hand luggage with you on the Cardiff Portsmouth bus route free of charge. Simply use our search to find a bus that is best suited to your needs for your planned travel date.

What equipment is available for the Cardiff Portsmouth bus route?

The equipment on board differs depending on the provider. However, many long-distance buses have WiFi so you can tell your friends your exact location during the journey. To make traveling even more pleasant, air conditioning systems provide ventilation. It is best to use our search to get precise information about the equipment of the bus from Cardiff to Portsmouth on your planned travel date.

Available seat classes which are offered on the bus route Cardiff to Portsmouth

Economy
Economy

The cheapest option available for your ticket, it usually comes with reclinable seats and AC.

More bus routes to Cardiff and to Portsmouth

Here’s an overview of the most popular bus routes to Cardiff and to Portsmouth. Simply click on the connection of your choice, and you will find all the details about your bus route!
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Popular Airport Shuttles to Cardiff and to Portsmouth
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