Bus Cardiff to Portsmouth - Compare all Companies

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

$17

tomorrow

$20

Saturday

$18

Sunday

Monday

$20

Tuesday

$16

Wednesday

$20

Cheapest bus trips today
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
National Express	7h 0m	7:15 PM	Cardiff	Coach Station	2:15 AM	Portsmouth	The Hard Interchange	Economy	$17	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/4/2025 7:15:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/5/2025 2:15:00 AM. 50 Economy ticket for $17 per person are available. Travel duration is 7h 0m
National Express	7h 10m	12:30 PM	Cardiff	Coach Station	7:40 PM	Portsmouth	The Hard Interchange	Economy	$18	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/4/2025 12:30:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/4/2025 7:40:00 PM. 50 Economy ticket for $18 per person are available. Travel duration is 7h 10m
National Express	7h 0m	9:00 AM	Cardiff	Coach Station	4:00 PM	Portsmouth	The Hard Interchange	Economy	$22	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/4/2025 9:00:00 AM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/4/2025 4:00:00 PM. 50 Economy ticket for $22 per person are available. Travel duration is 7h 0m
National Express	8h 0m	4:30 PM	Cardiff	Coach Station	12:30 AM	Portsmouth	The Hard Interchange	Economy	$38	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/4/2025 4:30:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/5/2025 12:30:00 AM. 50 Economy ticket for $38 per person are available. Travel duration is 8h 0m
National Express	5h 25m	5:25 AM	Cardiff	Coach Station	10:50 AM	Portsmouth	The Hard Interchange	Economy	$40	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/4/2025 5:25:00 AM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/4/2025 10:50:00 AM. 50 Economy ticket for $40 per person are available. Travel duration is 5h 25m

Cheapest bus trips tomorrow
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
National Express	7h 0m	5:30 PM	Cardiff	Coach Station	12:30 AM	Portsmouth	The Hard Interchange	Economy	$20	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/5/2025 5:30:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/6/2025 12:30:00 AM. 50 Economy ticket for $20 per person are available. Travel duration is 7h 0m
National Express	7h 15m	3:45 PM	Cardiff	Coach Station	11:00 PM	Portsmouth	The Hard Interchange	Economy	$21	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/5/2025 3:45:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/5/2025 11:00:00 PM. 50 Economy ticket for $21 per person are available. Travel duration is 7h 15m
National Express	6h 30m	7:45 PM	Cardiff	Coach Station	2:15 AM	Portsmouth	The Hard Interchange	Economy	$22	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/5/2025 7:45:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/6/2025 2:15:00 AM. 50 Economy ticket for $22 per person are available. Travel duration is 6h 30m
National Express	7h 25m	7:30 AM	Cardiff	Coach Station	2:55 PM	Portsmouth	The Hard Interchange	Economy	$33	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/5/2025 7:30:00 AM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/5/2025 2:55:00 PM. 50 Economy ticket for $33 per person are available. Travel duration is 7h 25m
National Express	5h 25m	5:25 AM	Cardiff	Coach Station	10:50 AM	Portsmouth	The Hard Interchange	Economy	$50	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/5/2025 5:25:00 AM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/5/2025 10:50:00 AM. 50 Economy ticket for $50 per person are available. Travel duration is 5h 25m

Cheapest bus trips Saturday
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
National Express	7h 0m	5:30 PM	Cardiff	Coach Station	12:30 AM	Portsmouth	The Hard Interchange	Economy	$18	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/6/2025 5:30:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/7/2025 12:30:00 AM. 50 Economy ticket for $18 per person are available. Travel duration is 7h 0m
National Express	6h 30m	7:45 PM	Cardiff	Coach Station	2:15 AM	Portsmouth	The Hard Interchange	Economy	$18	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/6/2025 7:45:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/7/2025 2:15:00 AM. 50 Economy ticket for $18 per person are available. Travel duration is 6h 30m
National Express	7h 0m	4:00 PM	Cardiff	Coach Station	11:00 PM	Portsmouth	The Hard Interchange	Economy	$21	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/6/2025 4:00:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/6/2025 11:00:00 PM. 50 Economy ticket for $21 per person are available. Travel duration is 7h 0m
National Express	7h 10m	7:45 AM	Cardiff	Coach Station	2:55 PM	Portsmouth	The Hard Interchange	Economy	$44	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/6/2025 7:45:00 AM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/6/2025 2:55:00 PM. 50 Economy ticket for $44 per person are available. Travel duration is 7h 10m
National Express	6h 20m	5:55 AM	Cardiff	Coach Station	12:15 PM	Portsmouth	The Hard Interchange	Economy	$48	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/6/2025 5:55:00 AM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/6/2025 12:15:00 PM. 50 Economy ticket for $48 per person are available. Travel duration is 6h 20m

Cheapest bus trips Monday
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
National Express	7h 0m	5:30 PM	Cardiff	Coach Station	12:30 AM	Portsmouth	The Hard Interchange	Economy	$20	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/8/2025 5:30:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/9/2025 12:30:00 AM. 50 Economy ticket for $20 per person are available. Travel duration is 7h 0m
National Express	6h 30m	7:45 PM	Cardiff	Coach Station	2:15 AM	Portsmouth	The Hard Interchange	Economy	$20	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/8/2025 7:45:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/9/2025 2:15:00 AM. 50 Economy ticket for $20 per person are available. Travel duration is 6h 30m
National Express	7h 15m	3:45 PM	Cardiff	Coach Station	11:00 PM	Portsmouth	The Hard Interchange	Economy	$26	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/8/2025 3:45:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/8/2025 11:00:00 PM. 50 Economy ticket for $26 per person are available. Travel duration is 7h 15m
National Express	7h 25m	7:30 AM	Cardiff	Coach Station	2:55 PM	Portsmouth	The Hard Interchange	Economy	$33	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/8/2025 7:30:00 AM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/8/2025 2:55:00 PM. 50 Economy ticket for $33 per person are available. Travel duration is 7h 25m
National Express	5h 25m	5:25 AM	Cardiff	Coach Station	10:50 AM	Portsmouth	The Hard Interchange	Economy	$54	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/8/2025 5:25:00 AM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/8/2025 10:50:00 AM. 50 Economy ticket for $54 per person are available. Travel duration is 5h 25m

Did you know that if you travel from Cardiff to Portsmouth via Bristol, you can save more than $7? You can find the corresponding connections below.
- National Express
  
  8h 0m
  
  0
  
  6:15 PM
  
  Cardiff
  University
  
  7:20 PM
  
  Bristol
  Coach Station
  
  0
  
  Economy
  
  $4
  
  A Bus from National Express goes from University, Cardiff (United Kingdom) at 12/9/2025 6:15:00 PM to Coach Station, Bristol (United Kingdom) arriving at 12/9/2025 7:20:00 PM. 50 Economy ticket for $4 per person are available. Travel duration is 1h 5m
- National Express
  
  6h 15m
  
  0
  
  8:00 PM
  
  Bristol
  Coach Station
  
  2:15 AM
  
  Portsmouth
  The Hard Interchange
  
  0
  
  Economy
  
  $9
  
  A Bus from National Express goes from Coach Station, Bristol (United Kingdom) at 12/9/2025 8:00:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/10/2025 2:15:00 AM. 50 Economy ticket for $9 per person are available. Travel duration is 6h 15m
Travel time is 2h 35m longer, but you will save $7

Cheapest bus trips Tuesday
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
National Express	7h 0m	7:15 PM	Cardiff	Coach Station	2:15 AM	Portsmouth	The Hard Interchange	Economy	$16	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/9/2025 7:15:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/10/2025 2:15:00 AM. 50 Economy ticket for $16 per person are available. Travel duration is 7h 0m
National Express	7h 0m	9:00 AM	Cardiff	Coach Station	4:00 PM	Portsmouth	The Hard Interchange	Economy	$18	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/9/2025 9:00:00 AM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/9/2025 4:00:00 PM. 50 Economy ticket for $18 per person are available. Travel duration is 7h 0m
National Express	7h 10m	12:30 PM	Cardiff	Coach Station	7:40 PM	Portsmouth	The Hard Interchange	Economy	$18	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/9/2025 12:30:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/9/2025 7:40:00 PM. 50 Economy ticket for $18 per person are available. Travel duration is 7h 10m
National Express	8h 0m	4:30 PM	Cardiff	Coach Station	12:30 AM	Portsmouth	The Hard Interchange	Economy	$34	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/9/2025 4:30:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/10/2025 12:30:00 AM. 50 Economy ticket for $34 per person are available. Travel duration is 8h 0m
National Express	7h 0m	7:20 AM	Cardiff	Coach Station	2:20 PM	Portsmouth	The Hard Interchange	Economy	$36	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/9/2025 7:20:00 AM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/9/2025 2:20:00 PM. 50 Economy ticket for $36 per person are available. Travel duration is 7h 0m

Did you know that if you travel from Cardiff to Portsmouth via Bristol, you can save more than $3? You can find the corresponding connections below.
- National Express
  
  8h 0m
  
  0
  
  6:15 PM
  
  Cardiff
  University
  
  7:20 PM
  
  Bristol
  Coach Station
  
  0
  
  Economy
  
  $4
  
  A Bus from National Express goes from University, Cardiff (United Kingdom) at 12/9/2025 6:15:00 PM to Coach Station, Bristol (United Kingdom) arriving at 12/9/2025 7:20:00 PM. 50 Economy ticket for $4 per person are available. Travel duration is 1h 5m
- National Express
  
  6h 15m
  
  0
  
  8:00 PM
  
  Bristol
  Coach Station
  
  2:15 AM
  
  Portsmouth
  The Hard Interchange
  
  0
  
  Economy
  
  $9
  
  A Bus from National Express goes from Coach Station, Bristol (United Kingdom) at 12/9/2025 8:00:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/10/2025 2:15:00 AM. 50 Economy ticket for $9 per person are available. Travel duration is 6h 15m
Travel time is 1h 0m longer, but you will save $3

Cheapest bus trips Wednesday
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
National Express	7h 0m	7:15 PM	Cardiff	Coach Station	2:15 AM	Portsmouth	The Hard Interchange	Economy	$20	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/10/2025 7:15:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/11/2025 2:15:00 AM. 50 Economy ticket for $20 per person are available. Travel duration is 7h 0m
National Express	7h 0m	9:00 AM	Cardiff	Coach Station	4:00 PM	Portsmouth	The Hard Interchange	Economy	$28	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/10/2025 9:00:00 AM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/10/2025 4:00:00 PM. 50 Economy ticket for $28 per person are available. Travel duration is 7h 0m
National Express	7h 10m	12:30 PM	Cardiff	Coach Station	7:40 PM	Portsmouth	The Hard Interchange	Economy	$29	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/10/2025 12:30:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/10/2025 7:40:00 PM. 50 Economy ticket for $29 per person are available. Travel duration is 7h 10m
National Express	6h 30m	2:55 PM	Cardiff	Coach Station	9:25 PM	Portsmouth	The Hard Interchange	Economy	$47	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/10/2025 2:55:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/10/2025 9:25:00 PM. 50 Economy ticket for $47 per person are available. Travel duration is 6h 30m
National Express	5h 25m	5:25 AM	Cardiff	Coach Station	10:50 AM	Portsmouth	The Hard Interchange	Economy	$50	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/10/2025 5:25:00 AM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/10/2025 10:50:00 AM. 50 Economy ticket for $50 per person are available. Travel duration is 5h 25m

Did you know that if you travel from Cardiff to Portsmouth via Bristol, you can save more than $7? You can find the corresponding connections below.
- National Express
  
  8h 0m
  
  0
  
  6:15 PM
  
  Cardiff
  University
  
  7:20 PM
  
  Bristol
  Coach Station
  
  0
  
  Economy
  
  $4
  
  A Bus from National Express goes from University, Cardiff (United Kingdom) at 12/9/2025 6:15:00 PM to Coach Station, Bristol (United Kingdom) arriving at 12/9/2025 7:20:00 PM. 50 Economy ticket for $4 per person are available. Travel duration is 1h 5m
- National Express
  
  6h 15m
  
  0
  
  8:00 PM
  
  Bristol
  Coach Station
  
  2:15 AM
  
  Portsmouth
  The Hard Interchange
  
  0
  
  Economy
  
  $9
  
  A Bus from National Express goes from Coach Station, Bristol (United Kingdom) at 12/9/2025 8:00:00 PM to The Hard Interchange, Portsmouth (United Kingdom) arriving at 12/10/2025 2:15:00 AM. 50 Economy ticket for $9 per person are available. Travel duration is 6h 15m
Travel time is 2h 35m longer, but you will save $7

Best Price Offer: The price for the cheapest bus from Cardiff to Portsmouth is $16 on 12/9/2025. Flexible travelers save on ticket prices.

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 10 daily buses from Cardiff to Portsmouth. Tuesday has instead the fewest connections, with only 8 daily coaches between Cardiff and Portsmouth.

The busiest time of the day is the Afternoon, with 21 buses from Cardiff to Portsmouth, while Evening sees the fewest connections between Cardiff and Portsmouth, with 6 offers.

Facts about the bus from Cardiff to Portsmouth

Compare all providers like National Express that travel 8 times every day by bus from Cardiff to Portsmouth in one click! Book your bus ticket from Cardiff to Portsmouth starting from $16!

Cheapest Bus	$16
Fastest Bus	5h 25m
Earliest Bus	5:25 AM
Latest Bus	7:15 PM
Daily Bus Routes	8 Ø
Distance	101.8 miles
Bus Companies	National Express

Cheapest bus connections from Cardiff to Portsmouth

Every day, 8 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 12/04/2025 and for the following days.

Sunday

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday 11/30

Monday 12/01

Tuesday 12/02

Wednesday 12/03

Thursday 12/04

$17

Friday 12/05

$20

Saturday 12/06

$18

Sunday 12/07

Monday 12/08

$20

Tuesday 12/09

$16

Wednesday 12/10

$20

Thursday 12/11

$24

Friday 12/12

$33

Saturday 12/13

$33

Sunday 12/14

$33

Monday 12/15

Tuesday 12/16

$33

Wednesday 12/17

$33

Thursday 12/18

Friday 12/19

$50

Saturday 12/20

$50

Sunday 12/21

Monday 12/22

$57

Tuesday 12/23

Wednesday 12/24

$57

Thursday 12/25

$122

Friday 12/26

Saturday 12/27

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 $16, Tuesday is the cheapest day for a bus from Cardiff to Portsmouth. Monday instead is the most expensive day with prices starting from $20.

Evening is the cheapest day time for bus tickets from Cardiff to Portsmouth, with $16. Morning is the most expensive time of the day with prices starting from $18.

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.

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.

University

Park Place 50

Coach Station

Sophia Gardens 2

Kingsway Bus Stop

North Rd

Gabalfa Interchange

North Road 213

Bus Interchange

Central Square 3

The Hard Interchange

The Hard 6

University

Cambridge Rd

International Port

George Byng Way

Southsea Hoverport

City Shops South (Stop D) Bus Station

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 $16 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 $16 and $82. 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 8 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 $40. 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 7:15 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

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!