Bus from Portsmouth to Cardiff from $15

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Compare all timetables for the bus from Portsmouth to Cardiff

Here is a selection of the cheapest bus trips from the schedule from Portsmouth to Cardiff from various bus operators like National Express for the next days.

today
tomorrow
$22
Saturday
$34
Sunday
$34
Monday
$22
Tuesday
$22
Wednesday
$22

Cheapest bus trips tomorrow

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 7h 20m 12:35 PM Portsmouth The Hard Interchange 7:55 PM Cardiff Coach Station  Economy $22
National Express 6h 15m 6:45 PM Portsmouth The Hard Interchange 1:00 AM Cardiff Coach Station  Economy $22
National Express 6h 50m 7:20 AM Portsmouth The Hard Interchange 2:10 PM Cardiff Coach Station  Economy $34
National Express 6h 10m 10:50 AM Portsmouth The Hard Interchange 5:00 PM Cardiff Coach Station  Economy $41
National Express 5h 55m 4:45 PM Portsmouth The Hard Interchange 10:40 PM Cardiff Coach Station  Economy $44
  • Did you know that if you travel from Portsmouth to Cardiff via Bristol, you can save more than $8? You can find the corresponding connections below.
    • National Express
      6h 56m
      0
      6:29 PM
      Portsmouth
      University
      12:05 AM
      Bristol
      Coach Station
      0
      National Express
      Economy
      $9
      • Waiting Time 0h 5m
    • FlixBus
      1h 15m
      0
      12:10 AM
      Bristol
      Coach Station
      1:25 AM
      Cardiff
      Kingsway Bus Stop
      0
      FlixBus
      Economy
      $5
    Travel time is 1h 1m longer, but you will save $8

Cheapest bus trips Saturday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 6h 30m 7:40 AM Portsmouth The Hard Interchange 2:10 PM Cardiff Coach Station  Economy $34
National Express 6h 40m 12:35 PM Portsmouth The Hard Interchange 7:15 PM Cardiff Coach Station  Economy $34
National Express 6h 15m 6:45 PM Portsmouth The Hard Interchange 1:00 AM Cardiff Coach Station  Economy $34
National Express 5h 30m 8:10 PM Portsmouth The Hard Interchange 1:40 AM Cardiff Coach Station  Economy $55
National Express 5h 45m 4:55 PM Portsmouth The Hard Interchange 10:40 PM Cardiff Coach Station  Economy $59
  • Did you know that if you travel from Portsmouth to Cardiff via Bristol, you can save more than $20? You can find the corresponding connections below.
    • National Express
      6h 56m
      0
      6:29 PM
      Portsmouth
      University
      12:05 AM
      Bristol
      Coach Station
      0
      National Express
      Economy
      $9
      • Waiting Time 0h 5m
    • FlixBus
      1h 15m
      0
      12:10 AM
      Bristol
      Coach Station
      1:25 AM
      Cardiff
      Kingsway Bus Stop
      0
      FlixBus
      Economy
      $5
    Travel time is 1h 26m longer, but you will save $20

Cheapest bus trips Sunday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 6h 15m 6:45 PM Portsmouth The Hard Interchange 1:00 AM Cardiff Coach Station  Economy $34
National Express 6h 30m 7:40 AM Portsmouth The Hard Interchange 2:10 PM Cardiff Coach Station  Economy $36
National Express 6h 40m 12:35 PM Portsmouth The Hard Interchange 7:15 PM Cardiff Coach Station  Economy $38
National Express 5h 30m 8:10 PM Portsmouth The Hard Interchange 1:40 AM Cardiff Coach Station  Economy $55
National Express 6h 0m 1:50 PM Portsmouth The Hard Interchange 7:50 PM Cardiff Coach Station  Economy $66
  • Did you know that if you travel from Portsmouth to Cardiff via Bristol, you can save more than $20? You can find the corresponding connections below.
    • National Express
      6h 56m
      0
      6:29 PM
      Portsmouth
      University
      12:05 AM
      Bristol
      Coach Station
      0
      National Express
      Economy
      $9
      • Waiting Time 0h 5m
    • FlixBus
      1h 15m
      0
      12:10 AM
      Bristol
      Coach Station
      1:25 AM
      Cardiff
      Kingsway Bus Stop
      0
      FlixBus
      Economy
      $5
    Travel time is 1h 26m longer, but you will save $20

Cheapest bus trips Monday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 7h 0m 12:35 PM Portsmouth The Hard Interchange 7:35 PM Cardiff Coach Station  Economy $22
National Express 6h 15m 6:45 PM Portsmouth The Hard Interchange 1:00 AM Cardiff Coach Station  Economy $22
National Express 6h 50m 7:20 AM Portsmouth The Hard Interchange 2:10 PM Cardiff Coach Station  Economy $23
National Express 7h 40m 3:20 AM Portsmouth The Hard Interchange 11:00 AM Cardiff Coach Station  Economy $44
National Express 5h 55m 4:45 PM Portsmouth The Hard Interchange 10:40 PM Cardiff Coach Station  Economy $44
  • Did you know that if you travel from Portsmouth to Cardiff via Bristol, you can save more than $8? You can find the corresponding connections below.
    • National Express
      6h 56m
      0
      6:29 PM
      Portsmouth
      University
      12:05 AM
      Bristol
      Coach Station
      0
      National Express
      Economy
      $9
      • Waiting Time 0h 5m
    • FlixBus
      1h 15m
      0
      12:10 AM
      Bristol
      Coach Station
      1:25 AM
      Cardiff
      Kingsway Bus Stop
      0
      FlixBus
      Economy
      $5
    Travel time is 1h 1m longer, but you will save $8

Cheapest bus trips Tuesday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 7h 25m 11:05 AM Portsmouth The Hard Interchange 6:30 PM Cardiff Coach Station  Economy $22
National Express 6h 50m 2:55 PM Portsmouth The Hard Interchange 9:45 PM Cardiff Coach Station  Economy $22
National Express 6h 10m 6:45 PM Portsmouth The Hard Interchange 12:55 AM Cardiff Coach Station  Economy $22
National Express 8h 30m 7:50 AM Portsmouth The Hard Interchange 4:20 PM Cardiff Coach Station  Economy $23
National Express 5h 30m 8:10 PM Portsmouth The Hard Interchange 1:40 AM Cardiff Coach Station  Economy $35
  • Did you know that if you travel from Portsmouth to Cardiff via Bristol, you can save more than $8? You can find the corresponding connections below.
    • National Express
      6h 56m
      0
      6:29 PM
      Portsmouth
      University
      12:05 AM
      Bristol
      Coach Station
      0
      National Express
      Economy
      $9
      • Waiting Time 0h 5m
    • FlixBus
      1h 15m
      0
      12:10 AM
      Bristol
      Coach Station
      1:25 AM
      Cardiff
      Kingsway Bus Stop
      0
      FlixBus
      Economy
      $5
    Travel time is 1h 26m longer, but you will save $8

Cheapest bus trips Wednesday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 6h 50m 2:55 PM Portsmouth The Hard Interchange 9:45 PM Cardiff Coach Station  Economy $22
National Express 6h 10m 6:45 PM Portsmouth The Hard Interchange 12:55 AM Cardiff Coach Station  Economy $22
National Express 8h 30m 7:50 AM Portsmouth The Hard Interchange 4:20 PM Cardiff Coach Station  Economy $23
National Express 7h 25m 11:05 AM Portsmouth The Hard Interchange 6:30 PM Cardiff Coach Station  Economy $23
National Express 6h 30m 4:10 PM Portsmouth The Hard Interchange 10:40 PM Cardiff Coach Station  Economy $39
  • Did you know that if you travel from Portsmouth to Cardiff via Bristol, you can save more than $8? You can find the corresponding connections below.
    • National Express
      6h 56m
      0
      6:29 PM
      Portsmouth
      University
      12:05 AM
      Bristol
      Coach Station
      0
      National Express
      Economy
      $9
      • Waiting Time 0h 5m
    • FlixBus
      1h 15m
      0
      12:10 AM
      Bristol
      Coach Station
      1:25 AM
      Cardiff
      Kingsway Bus Stop
      0
      FlixBus
      Economy
      $5
    Travel time is 0h 46m longer, but you will save $8

Best Price Offer: The price for the cheapest bus from Portsmouth to Cardiff is $15 on 5/29/2026. Flexible travelers save on ticket prices.


Frequency of bus connections between Portsmouth and Cardiff

See here how frequent the connections between Portsmouth and Cardiff are, during different times and days of the week.
Sunday is the busiest day, with more than 10 daily buses from Portsmouth to Cardiff. Sunday has instead the fewest connections, with only 10 daily coaches between Portsmouth and Cardiff.
The busiest time of the day is the Morning, with 20 buses from Portsmouth to Cardiff, while Night sees the fewest connections between Portsmouth and Cardiff, with 10 offers.

Facts about the bus from Portsmouth to Cardiff

Compare all providers like National Express that travel 10 times every day by bus from Portsmouth to Cardiff in one click! Book your bus ticket from Portsmouth to Cardiff starting from $15!

Cheapest Bus $15
Fastest Bus 5h 30m
Earliest Bus 3:20 AM
Latest Bus 8:10 PM
Daily Bus Routes 10 Ø
Distance 101.8 miles
Bus Companies National Express

Cheapest bus connections from Portsmouth to Cardiff

Every day, 10 buses from 1 bus companies leave Portsmouth for Cardiff: in the table below, you will find the cheapest prices for a bus ticket for this route, starting from 05/07/2026 and for the following days.

Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday 05/03
Monday 05/04
Tuesday 05/05
Wednesday 05/06
Thursday 05/07
Friday 05/08
$22
Saturday 05/09
$34
Sunday 05/10
$34
Monday 05/11
$22
Tuesday 05/12
$22
Wednesday 05/13
$22
Thursday 05/14
$22
Friday 05/15
$34
Saturday 05/16
$34
Sunday 05/17
$34
Monday 05/18
$22
Tuesday 05/19
$22
Wednesday 05/20
$22
Thursday 05/21
$22
Friday 05/22
$22
Saturday 05/23
$22
Sunday 05/24
$22
Monday 05/25
$34
Tuesday 05/26
$34
Wednesday 05/27
$34
Thursday 05/28
$34
Friday 05/29
$15
Saturday 05/30

The cheapest time to travel from Portsmouth to Cardiff

See here on which day and which time of the day you can find the cheapest bus ticket from Portsmouth to Cardiff, for the next 30 days.
With a price starting from $15, Friday is the cheapest day for a bus from Portsmouth to Cardiff. Sunday instead is the most expensive day with prices starting from $22.
Night is the cheapest day time for bus tickets from Portsmouth to Cardiff, with $15. Morning is the most expensive time of the day with prices starting from $22.

How to save money travelling from Portsmouth to Cardiff

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 Portsmouth to Cardiff 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 Portsmouth to Cardiff, 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 Portsmouth to Cardiff are also emptier.

All bus stations and stops in Portsmouth and Cardiff

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

Service and Comfort on the bus from Portsmouth to Cardiff

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

FAQs about the Portsmouth to Cardiff bus

How much does a Portsmouth Cardiff 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 20m to reach Cardiff. Compare offers to save money!

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

This route is offered by 1 companies with a range of ticket prices between $15 and $76. Thus, we recommend booking your ticket as early as possible to make sure you get the cheapest bus ticket to Cardiff.

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

Every day, the Portsmouth to Cardiff bus route is served by approximately 10 connections. With our search, you can compare bus times to find the perfect trip.

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

The fastest bus from Portsmouth to Cardiff is offered by National Express and takes 5h 30m. Bus tickets for this connection cost $44. In this context, bear in mind that the journey can take longer due to traffic.

What time is the first bus from Portsmouth to Cardiff?

The earliest bus arriving in Cardiff from Portsmouth starts at 3:20 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 Portsmouth to Cardiff?

The latest bus trip departing from Portsmouth for Cardiff starts at 8:10 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 Portsmouth Cardiff route?

When traveling by bus from Portsmouth to Cardiff, 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 Portsmouth and Cardiff?

You can check all the direct connections between Portsmouth and Cardiff 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 Portsmouth to Cardiff 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 Portsmouth Cardiff 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 Portsmouth Cardiff 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 Portsmouth to Cardiff on your planned travel date.

How does CheckMyBus find the best bus deals from Portsmouth to Cardiff?

CheckMyBus collaborates directly with companies around the world to provide you with the best options when searching for a trip. We retrieve their first-hand data to show you real-time prices, schedules, and seat availability for 10 daily trips between Portsmouth and Cardiff. With the most up-to-date information from verified sources, you can fairly compare all available options and choose the trip that suits you best.

How does CheckMyBus technology work for trips from Portsmouth to Cardiff?

Prices and availability for 10 trips between Portsmouth and Cardiff change constantly. To provide you with the most up-to-date information, we connect directly with bus operators, Online Travel Agencies (OTAs), and Global Distribution Systems (GDS) via real-time interfaces (APIs). The data collected from these sources undergoes strict quality checks, is processed within our infrastructure, and is then presented to you on our search results pages. Visit our About Us page to learn more.

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

Economy
Economy

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

More bus routes to Portsmouth and to Cardiff

Here’s an overview of the most popular bus routes to Portsmouth and to Cardiff. 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 Portsmouth and to Cardiff
CheckMyBus › Buses in United Kingdom › Bus to Portsmouth › Bus to Cardiff

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