Which bus from Cardiff to Southampton is the cheapest?

Compare all coach companies and find the best price: Bus tickets from £13
Search for your destination Millions of deals worldwide
Compare results Save up to 70%
Find the right bus for you Easy and transparent

Which bus from Cardiff to Southampton is the best?

Check the bus schedule for Cardiff to Southampton. Here is a selection of the cheapest coach trips for the next days from bus operators like National Express or FlixBus. To see the full timetable for all coaches just use or search and compare.

today
£18
tomorrow
£18
Thursday
£16
Friday
£16
Saturday
£16
Sunday
£15
Monday
£13

Cheapest bus trips today

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 6h 50m 14:50 Cardiff Kingsway Coach Stop 21:40 Southampton University  Economy £18
FlixBus 7h 10m 14:50 Cardiff Kingsway Coach Stop 22:00 Southampton Coach Station  Economy £18
FlixBus 6h 5m 11:45 Cardiff Kingsway Coach Stop 17:50 Southampton University  Economy £19
National Express 7h 45m 19:15 Cardiff Coach Station 03:00 Southampton Coach Station  Economy £23
National Express 7h 0m 18:00 Cardiff Coach Station 01:00 Southampton Coach Station  Economy £33
  • Did you know that if you travel from Cardiff to Southampton via Bournemouth, you can save more than £3? You can find the corresponding connections below.
    • National Express
      8h 55m
      0
      06:55
      Cardiff
      Gabalfa Interchange
      14:35
      Bournemouth
      Train Station
      0
      National Express
      Economy
      £10
      • Waiting Time 0h 25m
    • National Express
      0h 50m
      0
      15:00
      Bournemouth
      Train Station
      15:50
      Southampton
      Coach Station
      0
      National Express
      Economy
      £5
    Travel time is 2h 50m longer, but you will save £3

Cheapest bus trips tomorrow

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 6h 50m 14:50 Cardiff Kingsway Coach Stop 21:40 Southampton University  Economy £18
FlixBus 6h 45m 16:40 Cardiff Kingsway Coach Stop 23:25 Southampton University  Economy £18
FlixBus 7h 10m 14:50 Cardiff Kingsway Coach Stop 22:00 Southampton Coach Station  Economy £18
National Express 7h 45m 19:15 Cardiff Coach Station 03:00 Southampton Coach Station  Economy £26
National Express 7h 0m 18:00 Cardiff Coach Station 01:00 Southampton Coach Station  Economy £33
  • Did you know that if you travel from Cardiff to Southampton via Bournemouth, you can save more than £5? You can find the corresponding connections below.
    • National Express
      9h 15m
      0
      05:25
      Cardiff
      Gabalfa Interchange
      12:50
      Bournemouth
      Train Station
      0
      National Express
      Economy
      £10
      • Waiting Time 1h 5m
    • FlixBus
      0h 45m
      0
      13:55
      Bournemouth
      Central Coach Station
      14:40
      Southampton
      Coach Station
      0
      FlixBus
      Economy
      £3
    Travel time is 2h 30m longer, but you will save £5

Cheapest bus trips Thursday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 7h 0m 18:00 Cardiff Coach Station 01:00 Southampton Coach Station  Economy £16
FlixBus 7h 10m 14:50 Cardiff Kingsway Coach Stop 22:00 Southampton Coach Station  Economy £16
FlixBus 7h 5m 16:40 Cardiff Kingsway Coach Stop 23:45 Southampton Coach Station  Economy £16
FlixBus 6h 50m 14:50 Cardiff Kingsway Coach Stop 21:40 Southampton University  Economy £16
National Express 7h 45m 19:15 Cardiff Coach Station 03:00 Southampton Coach Station  Economy £18
  • Did you know that if you travel from Cardiff to Southampton via Bournemouth, you can save more than £3? You can find the corresponding connections below.
    • National Express
      9h 15m
      0
      05:25
      Cardiff
      Gabalfa Interchange
      12:50
      Bournemouth
      Train Station
      0
      National Express
      Economy
      £10
      • Waiting Time 1h 5m
    • FlixBus
      0h 45m
      0
      13:55
      Bournemouth
      Central Coach Station
      14:40
      Southampton
      Coach Station
      0
      FlixBus
      Economy
      £3
    Travel time is 2h 25m longer, but you will save £3

Cheapest bus trips Friday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 7h 20m 16:45 Cardiff Coach Station 00:05 Southampton Coach Station  Economy £16
National Express 6h 45m 18:45 Cardiff Coach Station 01:30 Southampton Coach Station  Economy £16
FlixBus 7h 50m 03:10 Cardiff Kingsway Coach Stop 11:00 Southampton University  Economy £18
FlixBus 8h 30m 04:40 Cardiff Kingsway Coach Stop 13:10 Southampton University  Economy £18
FlixBus 7h 10m 10:40 Cardiff Kingsway Coach Stop 17:50 Southampton University  Economy £18
  • Did you know that if you travel from Cardiff to Southampton via Bournemouth, you can save more than £3? You can find the corresponding connections below.
    • National Express
      9h 15m
      0
      05:25
      Cardiff
      Gabalfa Interchange
      12:50
      Bournemouth
      Train Station
      0
      National Express
      Economy
      £10
      • Waiting Time 1h 5m
    • FlixBus
      0h 45m
      0
      13:55
      Bournemouth
      Central Coach Station
      14:40
      Southampton
      Coach Station
      0
      FlixBus
      Economy
      £3
    Travel time is 2h 30m longer, but you will save £3

Cheapest bus trips Saturday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 7h 20m 16:45 Cardiff Coach Station 00:05 Southampton Coach Station  Economy £16
National Express 6h 45m 18:45 Cardiff Coach Station 01:30 Southampton Coach Station  Economy £16
FlixBus 6h 25m 06:45 Cardiff Kingsway Coach Stop 13:10 Southampton University  Economy £17
FlixBus 7h 10m 10:40 Cardiff Kingsway Coach Stop 17:50 Southampton University  Economy £17
FlixBus 6h 45m 06:45 Cardiff Kingsway Coach Stop 13:30 Southampton Coach Station  Economy £17
  • Did you know that if you travel from Cardiff to Southampton via Bournemouth, you can save more than £3? You can find the corresponding connections below.
    • National Express
      9h 15m
      0
      05:25
      Cardiff
      Gabalfa Interchange
      12:50
      Bournemouth
      Train Station
      0
      National Express
      Economy
      £10
      • Waiting Time 1h 5m
    • FlixBus
      0h 45m
      0
      13:55
      Bournemouth
      Central Coach Station
      14:40
      Southampton
      Coach Station
      0
      FlixBus
      Economy
      £3
    Travel time is 2h 50m longer, but you will save £3

Cheapest bus trips Sunday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 6h 20m 04:40 Cardiff Kingsway Coach Stop 11:00 Southampton University  Economy £15
FlixBus 7h 10m 10:40 Cardiff Kingsway Coach Stop 17:50 Southampton University  Economy £15
FlixBus 6h 40m 04:40 Cardiff Kingsway Coach Stop 11:20 Southampton Coach Station  Economy £15
National Express 7h 15m 19:45 Cardiff Coach Station 03:00 Southampton Coach Station  Economy £18
National Express 7h 20m 16:45 Cardiff Coach Station 00:05 Southampton Coach Station  Economy £22
  • Did you know that if you travel from Cardiff to Southampton via Bournemouth, you can save more than £2? You can find the corresponding connections below.
    • National Express
      9h 15m
      0
      05:25
      Cardiff
      Gabalfa Interchange
      12:50
      Bournemouth
      Train Station
      0
      National Express
      Economy
      £10
      • Waiting Time 1h 5m
    • FlixBus
      0h 45m
      0
      13:55
      Bournemouth
      Central Coach Station
      14:40
      Southampton
      Coach Station
      0
      FlixBus
      Economy
      £3
    Travel time is 2h 55m longer, but you will save £2

Cheapest bus trips Monday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 6h 45m 18:45 Cardiff Coach Station 01:30 Southampton Coach Station  Economy £13
FlixBus 6h 20m 04:40 Cardiff Kingsway Coach Stop 11:00 Southampton University  Economy £15
FlixBus 6h 25m 06:45 Cardiff Kingsway Coach Stop 13:10 Southampton University  Economy £15
FlixBus 6h 5m 11:45 Cardiff Kingsway Coach Stop 17:50 Southampton University  Economy £15
National Express 7h 20m 16:45 Cardiff Coach Station 00:05 Southampton Coach Station  Economy £16

Best Price Offer: The price for the cheapest coach from Cardiff to Southampton is £13 on 11/05/2026. Flexible travellers save on ticket prices.


What is the best day and time to travel by bus between Cardiff and Southampton?

Here is the frequency of all coach connections from Cardiff to Southampton. See on which day of the week you have more travel options and what time you have more bus trips to choose from.
Monday is the busiest day, with more than 22 daily coaches from Cardiff to Southampton. Tuesday has instead the fewest connections, with only 13 daily coaches between Cardiff and Southampton.
The busiest time of the day is the Afternoon, with 55 coaches from Cardiff to Southampton, while Evening sees the fewest connections between Cardiff and Southampton, with 14 offers.

All facts for Cardiff to Southampton bus at a glance

Compare all coach operators like National Express and FlixBus that travel daily 19 times by bus from Cardiff to Southampton in one click. Book your Cardiff to Southampton bus ticket starting from £13!

Cheapest Bus £13
Fastest Bus 5h 10m
Earliest Coach 09:25
Latest Coach 19:45
Daily Bus Connections 19 Ø
Distance 139.1 km
Coach Companies National Express and FlixBus

What are the cheapest coach tickets from Cardiff to Southampton?

Every day, 19 buses from 2 coach companies leave Cardiff for Southampton. Check the table below to find the cheapest prices for coach tickets for this route, starting from 05/05/2026 and for the following days. Make sure get the cheapest bus ticket!

Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday 04/05
Tuesday 05/05
£18
Wednesday 06/05
£18
Thursday 07/05
£16
Friday 08/05
£16
Saturday 09/05
£16
Sunday 10/05
£15
Monday 11/05
£13
Tuesday 12/05
£13
Wednesday 13/05
£14
Thursday 14/05
£13
Friday 15/05
£17
Saturday 16/05
£17
Sunday 17/05
£13
Monday 18/05
£13
Tuesday 19/05
£15
Wednesday 20/05
£16
Thursday 21/05
£16
Friday 22/05
£20
Saturday 23/05
£16
Sunday 24/05
£16
Monday 25/05
£23
Tuesday 26/05
£16
Wednesday 27/05
£13
Thursday 28/05
£13
Friday 29/05
£13
Saturday 30/05
£16
Sunday 31/05

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 £13, Monday is the cheapest day for a coach from Cardiff to Southampton. Saturday instead is the most expensive day with prices starting from £16.
Evening is the cheapest day time for bus tickets from Cardiff to Southampton, with £13. Morning is the most expensive time of the day with prices starting from £15.

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 higher prices for your trip? Plan your bus trips smartly. Here are a few hacks to save money on your coach journey.

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 coach 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 coaches from Cardiff to Southampton are also emptier.

Check for bus deals and promotions for all bus companies in this route. On CheckMyBus we show special offers directly in the coach trip on our search. Sign-up and check or deals sections and get notifications on our latest travel hacks.

What are the most popular bus companies from Cardiff to Southampton?

These are the most booked bus companies by our users on the Cardiff to Southampton timetable.

National Express from Cardiff to Southampton

National Express

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

Cheapest Price £13
Fastest Coach 5h 10m
Earliest Coach 09:25
Last Coach 19:45
Daily Connections 10 Ø
Found on 05/05/2026

FlixBus from Cardiff to Southampton

FlixBus

Here you will find the key facts about the FlixBus bus route Cardiff to Southampton:

Cheapest Price £15
Fastest Coach 6h 5m
Earliest Coach 11:45
Last Coach 16:40
Daily Connections 9 Ø
Found on 05/05/2026
In total 2 operators offer buses for this route. Find all bus timetables for them. Each coach company has a dedicated cancellation policy and possibilities for transport luggage on the bus. Check also special conditions to travel with kids or coach cards with rebates.

All bus stations and stops in Cardiff and Southampton

Here is a map with all coach stations in Cardiff and Southampton. Compare which stop is closest to your destination to save time to find the fastest buses and connections.

All you need to know when you travel by bus from Cardiff to Southampton

Check all information on comfort and services on the coaches from Cardiff to Southampton. Which seat classes are available or what are the amenities of operators on your coach trip? Below you´ll find answers to your questions.

FAQs for Cardiff to Southampton bus

How much does a Cardiff Southampton coach trip cost?

This depends on, among other things, the day and travel time. The cheapest ticket for the Cardiff Southampton bus trip is available from £13 and takes 6h 45m. Compare offers and save money!

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

This connection is offered by 2 companies with ticket prices ranging from £13 to £70. Therefore, we suggest booking your ticket as soon as possible to ensure you’ll get the cheapest bus trip to Southampton.

How many connections are available for the Cardiff Southampton route on average every day?

Each day, the bus route from Cardiff to Southampton is offered by roughly 19 busses. By using our search, you can compare bus schedules and find your ideal trip.

How long does a bus to Southampton from Cardiff take?

The quickest coach from Cardiff to Southampton is provided by National Express and takes 5h 10m. Coach tickets for this connection cost £55. However, keep in mind that the connection can take longer due to traffic.

What time is the first bus from Cardiff to Southampton?

The earliest bus to Southampton departs from Cardiff at 09:25. In this context, information about departure times may differ on weekends and holidays. Simply use our search to find the exact times for your planned travel date.

What time is the last coach from Cardiff to Southampton?

The latest bus to Southampton departs from Cardiff at 19:45. Please note that departure times may differ on weekends and holidays. Simply use our search to find the exact times for your planned travel date.

Which bus companies serve the Cardiff Southampton route?

Passengers looking to travel from Cardiff to Southampton can travel with National Express and FlixBus. Compare all available bus tickets with our search to book the trip that works best 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 bus to Southampton from Cardiff?

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 bus for the Cardiff Southampton bus route free of charge. Simply use our search to find a coach 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 travelling 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.

How does CheckMyBus find the best coach deals from Cardiff to Southampton?

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 19 daily trips between Cardiff and Southampton. 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 Cardiff to Southampton?

Prices and availability for 19 trips between Cardiff and Southampton 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 Cardiff to Southampton

Economy
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’ll find all the details about your bus route!
Buses Lancaster to Cardiff Buses Lancaster to Cardiff
Buses Chesterfield to Cardiff Buses Chesterfield to Cardiff
Brussels to Cardiff bus Brussels to Cardiff bus
Coach to Cardiff from Chepstow Coach to Cardiff from Chepstow
Bus to Southampton from Stansted Mountfitchet Bus to Southampton from Stansted Mountfitchet
Coach to Southampton from Cockermouth Coach to Southampton from Cockermouth
Buses Minehead to Southampton Buses Minehead to Southampton
Coach Cosham to Southampton Coach Cosham to Southampton
Popular Airport Transfers to Cardiff and to Southampton
CheckMyBus › Coaches in United Kingdom › Coach to Cardiff › Coach to Southampton

The CheckMyBus App

Free Download

App Store
CheckMyBus App
Close
GPDR CheckMyBus shield

We value your privacy!

To

show

you

the

best

bus

deals,

we

and

our

partners

use

technical,

analytical,

and

marketing

cookies

for

ads

personalisation.

We

remember

your

anonymized

details

to

provide

a

personalized

experience.