Bus Cardiff to Southampton - Compare all Companies

Compare all timetables for the bus from Cardiff to Southampton

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

today

$11

tomorrow

$16

Saturday

$12

Sunday

$16

Monday

$16

Tuesday

$12

Wednesday

$11

Cheapest bus trips today
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
National Express	7h 0m	6:00 PM	Cardiff	Coach Station	1:00 AM	Southampton	Bus Station	Economy	$11	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/23/2026 6:00:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/24/2026 1:00:00 AM. 50 Economy ticket for $11 per person are available. Travel duration is 7h 0m
National Express	7h 45m	7:15 PM	Cardiff	Coach Station	3:00 AM	Southampton	Bus Station	Economy	$24	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/23/2026 7:15:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/24/2026 3:00:00 AM. 50 Economy ticket for $24 per person are available. Travel duration is 7h 45m
FlixBus	6h 50m	2:50 PM	Cardiff	Kingsway Bus Stop	9:40 PM	Southampton	University	Economy	$26	A Bus from FlixBus goes from Kingsway Bus Stop, Cardiff (United Kingdom) at 7/23/2026 2:50:00 PM to University, Southampton (United Kingdom) arriving at 7/23/2026 9:40:00 PM. 50 Economy ticket for $26 per person are available. Travel duration is 6h 50m
FlixBus	6h 45m	4:40 PM	Cardiff	Kingsway Bus Stop	11:25 PM	Southampton	University	Economy	$26	A Bus from FlixBus goes from Kingsway Bus Stop, Cardiff (United Kingdom) at 7/23/2026 4:40:00 PM to University, Southampton (United Kingdom) arriving at 7/23/2026 11:25:00 PM. 50 Economy ticket for $26 per person are available. Travel duration is 6h 45m
FlixBus	7h 10m	2:50 PM	Cardiff	Kingsway Bus Stop	10:00 PM	Southampton	Bus Station	Economy	$27	A Bus from FlixBus goes from Kingsway Bus Stop, Cardiff (United Kingdom) at 7/23/2026 2:50:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/23/2026 10:00:00 PM. 50 Economy ticket for $27 per person are available. Travel duration is 7h 10m

Cheapest bus trips tomorrow
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
National Express	7h 20m	4:45 PM	Cardiff	Coach Station	12:05 AM	Southampton	Bus Station	Economy	$16	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/24/2026 4:45:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/25/2026 12:05:00 AM. 50 Economy ticket for $16 per person are available. Travel duration is 7h 20m
National Express	6h 45m	6:45 PM	Cardiff	Coach Station	1:30 AM	Southampton	Bus Station	Economy	$16	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/24/2026 6:45:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/25/2026 1:30:00 AM. 50 Economy ticket for $16 per person are available. Travel duration is 6h 45m
National Express	7h 15m	7:45 PM	Cardiff	Coach Station	3:00 AM	Southampton	Bus Station	Economy	$26	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/24/2026 7:45:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/25/2026 3:00:00 AM. 50 Economy ticket for $26 per person are available. Travel duration is 7h 15m
FlixBus	6h 20m	4:40 AM	Cardiff	Kingsway Bus Stop	11:00 AM	Southampton	University	Economy	$29	A Bus from FlixBus goes from Kingsway Bus Stop, Cardiff (United Kingdom) at 7/24/2026 4:40:00 AM to University, Southampton (United Kingdom) arriving at 7/24/2026 11:00:00 AM. 50 Economy ticket for $29 per person are available. Travel duration is 6h 20m
FlixBus	6h 5m	11:45 AM	Cardiff	Kingsway Bus Stop	5:50 PM	Southampton	University	Economy	$29	A Bus from FlixBus goes from Kingsway Bus Stop, Cardiff (United Kingdom) at 7/24/2026 11:45:00 AM to University, Southampton (United Kingdom) arriving at 7/24/2026 5:50:00 PM. 50 Economy ticket for $29 per person are available. Travel duration is 6h 5m

Cheapest bus trips Saturday
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
National Express	7h 20m	4:45 PM	Cardiff	Coach Station	12:05 AM	Southampton	Bus Station	Economy	$12	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/25/2026 4:45:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/26/2026 12:05:00 AM. 50 Economy ticket for $12 per person are available. Travel duration is 7h 20m
National Express	6h 45m	6:45 PM	Cardiff	Coach Station	1:30 AM	Southampton	Bus Station	Economy	$15	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/25/2026 6:45:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/26/2026 1:30:00 AM. 50 Economy ticket for $15 per person are available. Travel duration is 6h 45m
National Express	7h 15m	7:45 PM	Cardiff	Coach Station	3:00 AM	Southampton	Bus Station	Economy	$24	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/25/2026 7:45:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/26/2026 3:00:00 AM. 50 Economy ticket for $24 per person are available. Travel duration is 7h 15m
National Express	6h 5m	4:40 PM	Cardiff	Coach Station	10:45 PM	Southampton	Bus Station	Economy	$39	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/25/2026 4:40:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/25/2026 10:45:00 PM. 50 Economy ticket for $39 per person are available. Travel duration is 6h 5m
National Express	6h 10m	3:40 AM	Cardiff	Coach Station	9:50 AM	Southampton	Bus Station	Economy	$40	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/25/2026 3:40:00 AM to Bus Station, Southampton (United Kingdom) arriving at 7/25/2026 9:50:00 AM. 50 Economy ticket for $40 per person are available. Travel duration is 6h 10m

Cheapest bus trips Sunday
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
National Express	6h 45m	6:45 PM	Cardiff	Coach Station	1:30 AM	Southampton	Bus Station	Economy	$16	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/26/2026 6:45:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/27/2026 1:30:00 AM. 50 Economy ticket for $16 per person are available. Travel duration is 6h 45m
National Express	7h 20m	4:45 PM	Cardiff	Coach Station	12:05 AM	Southampton	Bus Station	Economy	$19	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/26/2026 4:45:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/27/2026 12:05:00 AM. 50 Economy ticket for $19 per person are available. Travel duration is 7h 20m
National Express	7h 15m	7:45 PM	Cardiff	Coach Station	3:00 AM	Southampton	Bus Station	Economy	$26	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/26/2026 7:45:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/27/2026 3:00:00 AM. 50 Economy ticket for $26 per person are available. Travel duration is 7h 15m
FlixBus	6h 20m	4:40 AM	Cardiff	Kingsway Bus Stop	11:00 AM	Southampton	University	Economy	$30	A Bus from FlixBus goes from Kingsway Bus Stop, Cardiff (United Kingdom) at 7/26/2026 4:40:00 AM to University, Southampton (United Kingdom) arriving at 7/26/2026 11:00:00 AM. 50 Economy ticket for $30 per person are available. Travel duration is 6h 20m
FlixBus	6h 40m	4:40 AM	Cardiff	Kingsway Bus Stop	11:20 AM	Southampton	Bus Station	Economy	$30	A Bus from FlixBus goes from Kingsway Bus Stop, Cardiff (United Kingdom) at 7/26/2026 4:40:00 AM to Bus Station, Southampton (United Kingdom) arriving at 7/26/2026 11:20:00 AM. 50 Economy ticket for $30 per person are available. Travel duration is 6h 40m

Cheapest bus trips Monday
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
National Express	7h 20m	4:45 PM	Cardiff	Coach Station	12:05 AM	Southampton	Bus Station	Economy	$16	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/27/2026 4:45:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/28/2026 12:05:00 AM. 50 Economy ticket for $16 per person are available. Travel duration is 7h 20m
National Express	6h 45m	6:45 PM	Cardiff	Coach Station	1:30 AM	Southampton	Bus Station	Economy	$16	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/27/2026 6:45:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/28/2026 1:30:00 AM. 50 Economy ticket for $16 per person are available. Travel duration is 6h 45m
National Express	7h 15m	7:45 PM	Cardiff	Coach Station	3:00 AM	Southampton	Bus Station	Economy	$26	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/27/2026 7:45:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/28/2026 3:00:00 AM. 50 Economy ticket for $26 per person are available. Travel duration is 7h 15m
FlixBus	6h 20m	4:40 AM	Cardiff	Kingsway Bus Stop	11:00 AM	Southampton	University	Economy	$27	A Bus from FlixBus goes from Kingsway Bus Stop, Cardiff (United Kingdom) at 7/27/2026 4:40:00 AM to University, Southampton (United Kingdom) arriving at 7/27/2026 11:00:00 AM. 50 Economy ticket for $27 per person are available. Travel duration is 6h 20m
FlixBus	6h 50m	2:50 PM	Cardiff	Kingsway Bus Stop	9:40 PM	Southampton	University	Economy	$27	A Bus from FlixBus goes from Kingsway Bus Stop, Cardiff (United Kingdom) at 7/27/2026 2:50:00 PM to University, Southampton (United Kingdom) arriving at 7/27/2026 9:40:00 PM. 50 Economy ticket for $27 per person are available. Travel duration is 6h 50m

Cheapest bus trips Tuesday
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
National Express	7h 0m	6:00 PM	Cardiff	Coach Station	1:00 AM	Southampton	Bus Station	Economy	$12	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/28/2026 6:00:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/29/2026 1:00:00 AM. 50 Economy ticket for $12 per person are available. Travel duration is 7h 0m
National Express	7h 45m	7:15 PM	Cardiff	Coach Station	3:00 AM	Southampton	Bus Station	Economy	$24	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/28/2026 7:15:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/29/2026 3:00:00 AM. 50 Economy ticket for $24 per person are available. Travel duration is 7h 45m
National Express	5h 55m	5:25 AM	Cardiff	Coach Station	11:20 AM	Southampton	Bus Station	Economy	$40	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/28/2026 5:25:00 AM to Bus Station, Southampton (United Kingdom) arriving at 7/28/2026 11:20:00 AM. 50 Economy ticket for $40 per person are available. Travel duration is 5h 55m
National Express	5h 30m	7:20 AM	Cardiff	Coach Station	12:50 PM	Southampton	Bus Station	Economy	$41	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/28/2026 7:20:00 AM to Bus Station, Southampton (United Kingdom) arriving at 7/28/2026 12:50:00 PM. 50 Economy ticket for $41 per person are available. Travel duration is 5h 30m
National Express	6h 30m	9:25 AM	Cardiff	Coach Station	3:55 PM	Southampton	Bus Station	Economy	$41	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/28/2026 9:25:00 AM to Bus Station, Southampton (United Kingdom) arriving at 7/28/2026 3:55:00 PM. 50 Economy ticket for $41 per person are available. Travel duration is 6h 30m

Cheapest bus trips Wednesday
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
National Express	7h 0m	6:00 PM	Cardiff	Coach Station	1:00 AM	Southampton	Bus Station	Economy	$11	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/29/2026 6:00:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/30/2026 1:00:00 AM. 50 Economy ticket for $11 per person are available. Travel duration is 7h 0m
National Express	7h 45m	7:15 PM	Cardiff	Coach Station	3:00 AM	Southampton	Bus Station	Economy	$24	A Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 7/29/2026 7:15:00 PM to Bus Station, Southampton (United Kingdom) arriving at 7/30/2026 3:00:00 AM. 50 Economy ticket for $24 per person are available. Travel duration is 7h 45m
FlixBus	6h 20m	4:40 AM	Cardiff	Kingsway Bus Stop	11:00 AM	Southampton	University	Economy	$26	A Bus from FlixBus goes from Kingsway Bus Stop, Cardiff (United Kingdom) at 7/29/2026 4:40:00 AM to University, Southampton (United Kingdom) arriving at 7/29/2026 11:00:00 AM. 50 Economy ticket for $26 per person are available. Travel duration is 6h 20m
FlixBus	6h 25m	6:45 AM	Cardiff	Kingsway Bus Stop	1:10 PM	Southampton	University	Economy	$26	A Bus from FlixBus goes from Kingsway Bus Stop, Cardiff (United Kingdom) at 7/29/2026 6:45:00 AM to University, Southampton (United Kingdom) arriving at 7/29/2026 1:10:00 PM. 50 Economy ticket for $26 per person are available. Travel duration is 6h 25m
FlixBus	6h 50m	2:50 PM	Cardiff	Kingsway Bus Stop	9:40 PM	Southampton	University	Economy	$26	A Bus from FlixBus goes from Kingsway Bus Stop, Cardiff (United Kingdom) at 7/29/2026 2:50:00 PM to University, Southampton (United Kingdom) arriving at 7/29/2026 9:40:00 PM. 50 Economy ticket for $26 per person are available. Travel duration is 6h 50m

Best Price Offer: The price for the cheapest bus from Cardiff to Southampton is $11 on 7/23/2026. Flexible travelers save on ticket prices.

Frequency of bus connections between Cardiff and Southampton

See here how frequent the connections between Cardiff and Southampton are, during different times and days of the week.

Monday is the busiest day, with more than 22 daily buses from Cardiff to Southampton. Thursday has instead the fewest connections, with only 9 daily coaches between Cardiff and Southampton.

The busiest time of the day is the Afternoon, with 47 buses from Cardiff to Southampton, while Evening sees the fewest connections between Cardiff and Southampton, with 14 offers.

Facts about the bus from Cardiff to Southampton

Compare all providers like National Express and FlixBus that travel 16 times every day by bus from Cardiff to Southampton in one click! Book your bus ticket from Cardiff to Southampton starting from $11!

Cheapest Bus	$11
Fastest Bus	5h 10m
Earliest Bus	2:35 PM
Latest Bus	7:15 PM
Daily Bus Routes	16 Ø
Distance	86.4 miles
Bus Companies	National Express and FlixBus

Cheapest bus connections from Cardiff to Southampton

Every day, 16 buses from 2 bus companies leave Cardiff for Southampton: in the table below, you will find the cheapest prices for a bus ticket for this route, starting from 07/23/2026 and for the following days.

Sunday

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday 07/19

Monday 07/20

Tuesday 07/21

Wednesday 07/22

Thursday 07/23

$26

Friday 07/24

$16

Saturday 07/25

$12

Sunday 07/26

$16

Monday 07/27

$16

Tuesday 07/28

$16

Wednesday 07/29

$11

Thursday 07/30

$15

Friday 07/31

$14

Saturday 08/01

$12

Sunday 08/02

$18

Monday 08/03

$12

Tuesday 08/04

Wednesday 08/05

$12

Thursday 08/06

$22

Friday 08/07

$12

Saturday 08/08

$27

Sunday 08/09

$12

Monday 08/10

$12

Tuesday 08/11

$12

Wednesday 08/12

$24

Thursday 08/13

$24

Friday 08/14

Saturday 08/15

The cheapest time to travel from Cardiff to Southampton

See here on which day and which time of the day you can find the cheapest bus ticket from Cardiff to Southampton, for the next 30 days.

With a price starting from $11, Wednesday is the cheapest day for a bus from Cardiff to Southampton. Sunday instead is the most expensive day with prices starting from $12.

Evening is the cheapest day time for bus tickets from Cardiff to Southampton, with $11. Morning is the most expensive time of the day with prices starting from $26.

How to save money travelling from Cardiff to Southampton

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 Southampton 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 Southampton, 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 Southampton are also emptier.

All bus stations and stops in Cardiff and Southampton

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

University

Park Place 50

Kingsway Bus Stop

North Rd

Coach Station

Sophia Gardens 2

Gabalfa Interchange

North Road 213

Bus Interchange

Central Square 3

Bus Station

Harbour Parade 2

Solent University

East Park Terrace

University

Highfield Interchange Highfield Interchange

New Road

Port

Town Quay

Service and Comfort on the bus from Cardiff to Southampton

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

FAQs about the Cardiff to Southampton bus

How much does a Cardiff Southampton bus trip cost?

This depends on, among other things, the day and time of travel. The cheapest trip is available from $11 and takes 7h 0m to reach Southampton. Compare offers to save money!

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

This route is offered by 2 companies with a range of ticket prices between $11 and $88. Thus, we recommend booking your ticket as early as possible to make sure you get the cheapest bus ticket to Southampton.

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

Every day, the Cardiff to Southampton bus route is served by approximately 16 connections. With our search, you can compare bus times to find the perfect trip.

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

The fastest bus from Cardiff to Southampton is offered by National Express and takes 5h 10m. Bus tickets for this connection cost $48. In this context, bear in mind that the journey can take longer due to traffic.

What time is the first bus from Cardiff to Southampton?

The earliest bus arriving in Southampton from Cardiff starts at 2:35 PM. 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 Southampton?

The latest bus trip departing from Cardiff for Southampton 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 Southampton route?

When traveling by bus from Cardiff to Southampton, passengers can travel with National Express and FlixBus. 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 Southampton?

You can check all the direct connections between Cardiff and Southampton 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 and FlixBus.

What can I take with me on the Cardiff to Southampton 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 Southampton 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 Southampton 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 Southampton on your planned travel date.

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

Economy

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

More bus routes to Cardiff and to Southampton

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