Bus tickets Cardiff to Southampton from £15

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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
from £22
tomorrow
from £15
Tuesday
from £19
Wednesday
from £18
Thursday
from £21
Friday
from £19
Saturday
from £16

Cheapest bus trips today

Prices are for one way and one person
  • National Express
    7h 20m
    0
    16:45
    Cardiff
    Coach Station
    00:05
    Southampton
    Coach Station
    0
    National Express
    Economy
    £22
  • National Express
    6h 45m
    0
    18:45
    Cardiff
    Coach Station
    01:30
    Southampton
    Coach Station
    0
    National Express
    Economy
    £22
  • National Express
    7h 15m
    0
    19:45
    Cardiff
    Coach Station
    03:00
    Southampton
    Coach Station
    0
    National Express
    Economy
    £23
  • FlixBus
    6h 20m
    0
    16:45
    Cardiff
    Kingsway Coach Stop
    23:05
    Southampton
    Burgess Road
    0
    FlixBus
    Economy
    £28
  • FlixBus
    6h 35m
    0
    16:45
    Cardiff
    Kingsway Coach Stop
    23:20
    Southampton
    Coach Station
    0
    FlixBus
    Economy
    £28
  • Did you know that if you travel from Cardiff to Southampton via Bristol, you can save more than £7? You can find the corresponding connections below.
    • FlixBus
      9h 30m
      0
      16:00
      Cardiff
      Kingsway Coach Stop
      17:25
      Bristol
      Coach Station
      0
      FlixBus
      Economy
      £6
      • Waiting Time 2h 5m
    • National Express
      6h 0m
      0
      19:30
      Bristol
      Coach Station
      01:30
      Southampton
      Coach Station
      0
      National Express
      Economy
      £9
    Travel time is 3h 10m longer, but you will save £7

Cheapest bus trips tomorrow

Prices are for one way and one person
  • National Express
    7h 20m
    0
    16:45
    Cardiff
    Coach Station
    00:05
    Southampton
    Coach Station
    0
    National Express
    Economy
    £15
  • National Express
    6h 45m
    0
    18:45
    Cardiff
    Coach Station
    01:30
    Southampton
    Coach Station
    0
    National Express
    Economy
    £18
  • National Express
    7h 15m
    0
    19:45
    Cardiff
    Coach Station
    03:00
    Southampton
    Coach Station
    0
    National Express
    Economy
    £18
  • FlixBus
    6h 55m
    0
    06:45
    Cardiff
    Kingsway Coach Stop
    13:40
    Southampton
    Coach Station
    0
    FlixBus
    Economy
    £23
  • FlixBus
    8h 30m
    0
    14:50
    Cardiff
    Kingsway Coach Stop
    23:20
    Southampton
    Coach Station
    0
    FlixBus
    Economy
    £23

Cheapest bus trips Tuesday

Prices are for one way and one person
  • National Express
    7h 0m
    0
    18:00
    Cardiff
    Coach Station
    01:00
    Southampton
    Coach Station
    0
    National Express
    Economy
    £19
  • National Express
    7h 45m
    0
    19:15
    Cardiff
    Coach Station
    03:00
    Southampton
    Coach Station
    0
    National Express
    Economy
    £20
  • FlixBus
    8h 15m
    0
    14:50
    Cardiff
    Kingsway Coach Stop
    23:05
    Southampton
    Burgess Road
    0
    FlixBus
    Economy
    £22
  • FlixBus
    8h 30m
    0
    14:50
    Cardiff
    Kingsway Coach Stop
    23:20
    Southampton
    Coach Station
    0
    FlixBus
    Economy
    £22
  • FlixBus
    6h 45m
    0
    10:40
    Cardiff
    Kingsway Coach Stop
    17:25
    Southampton
    Burgess Road
    0
    FlixBus
    Economy
    £24
  • Did you know that if you travel from Cardiff to Southampton via Bristol, you can save more than £4? You can find the corresponding connections below.
    • FlixBus
      9h 30m
      0
      16:00
      Cardiff
      Kingsway Coach Stop
      17:25
      Bristol
      Coach Station
      0
      FlixBus
      Economy
      £6
      • Waiting Time 2h 5m
    • National Express
      6h 0m
      0
      19:30
      Bristol
      Coach Station
      01:30
      Southampton
      Coach Station
      0
      National Express
      Economy
      £9
    Travel time is 2h 45m longer, but you will save £4

Cheapest bus trips Wednesday

Prices are for one way and one person
  • National Express
    7h 45m
    0
    19:15
    Cardiff
    Coach Station
    03:00
    Southampton
    Coach Station
    0
    National Express
    Economy
    £18
  • National Express
    7h 0m
    0
    18:00
    Cardiff
    Coach Station
    01:00
    Southampton
    Coach Station
    0
    National Express
    Economy
    £21
  • FlixBus
    6h 40m
    0
    06:45
    Cardiff
    Kingsway Coach Stop
    13:25
    Southampton
    Burgess Road
    0
    FlixBus
    Economy
    £24
  • FlixBus
    6h 55m
    0
    06:45
    Cardiff
    Kingsway Coach Stop
    13:40
    Southampton
    Coach Station
    0
    FlixBus
    Economy
    £24
  • FlixBus
    6h 45m
    0
    10:40
    Cardiff
    Kingsway Coach Stop
    17:25
    Southampton
    Burgess Road
    0
    FlixBus
    Economy
    £27
  • Did you know that if you travel from Cardiff to Southampton via Bristol, you can save more than £3? You can find the corresponding connections below.
    • FlixBus
      9h 0m
      0
      16:00
      Cardiff
      Kingsway Coach Stop
      17:25
      Bristol
      Coach Station
      0
      FlixBus
      Economy
      £6
      • Waiting Time 1h 5m
    • National Express
      6h 30m
      0
      18:30
      Bristol
      Coach Station
      01:00
      Southampton
      Coach Station
      0
      National Express
      Economy
      £9
    Travel time is 2h 20m longer, but you will save £3

Cheapest bus trips Thursday

Prices are for one way and one person
  • National Express
    7h 0m
    0
    18:00
    Cardiff
    Coach Station
    01:00
    Southampton
    Coach Station
    0
    National Express
    Economy
    £21
  • National Express
    7h 45m
    0
    19:15
    Cardiff
    Coach Station
    03:00
    Southampton
    Coach Station
    0
    National Express
    Economy
    £23
  • FlixBus
    6h 55m
    0
    06:45
    Cardiff
    Kingsway Coach Stop
    13:40
    Southampton
    Coach Station
    0
    FlixBus
    Economy
    £31
  • FlixBus
    6h 40m
    0
    06:45
    Cardiff
    Kingsway Coach Stop
    13:25
    Southampton
    Burgess Road
    0
    FlixBus
    Economy
    £31
  • FlixBus
    7h 0m
    0
    10:40
    Cardiff
    Kingsway Coach Stop
    17:40
    Southampton
    Coach Station
    0
    FlixBus
    Economy
    £32
  • Did you know that if you travel from Cardiff to Southampton via Bristol, you can save more than £6? You can find the corresponding connections below.
    • FlixBus
      9h 0m
      0
      16:00
      Cardiff
      Kingsway Coach Stop
      17:25
      Bristol
      Coach Station
      0
      FlixBus
      Economy
      £6
      • Waiting Time 1h 5m
    • National Express
      6h 30m
      0
      18:30
      Bristol
      Coach Station
      01:00
      Southampton
      Coach Station
      0
      National Express
      Economy
      £9
    Travel time is 2h 20m longer, but you will save £6

Cheapest bus trips Friday

Prices are for one way and one person
  • National Express
    7h 20m
    0
    16:45
    Cardiff
    Coach Station
    00:05
    Southampton
    Coach Station
    0
    National Express
    Economy
    £19
  • National Express
    6h 45m
    0
    18:45
    Cardiff
    Coach Station
    01:30
    Southampton
    Coach Station
    0
    National Express
    Economy
    £21
  • National Express
    7h 15m
    0
    19:45
    Cardiff
    Coach Station
    03:00
    Southampton
    Coach Station
    0
    National Express
    Economy
    £25
  • FlixBus
    7h 0m
    0
    10:40
    Cardiff
    Kingsway Coach Stop
    17:40
    Southampton
    Coach Station
    0
    FlixBus
    Economy
    £26
  • FlixBus
    6h 45m
    0
    10:40
    Cardiff
    Kingsway Coach Stop
    17:25
    Southampton
    Burgess Road
    0
    FlixBus
    Economy
    £26
  • Did you know that if you travel from Cardiff to Southampton via Bristol, you can save more than £4? You can find the corresponding connections below.
    • FlixBus
      9h 0m
      0
      16:00
      Cardiff
      Kingsway Coach Stop
      17:25
      Bristol
      Coach Station
      0
      FlixBus
      Economy
      £6
      • Waiting Time 1h 5m
    • National Express
      6h 30m
      0
      18:30
      Bristol
      Coach Station
      01:00
      Southampton
      Coach Station
      0
      National Express
      Economy
      £9
    Travel time is 2h 15m longer, but you will save £4

Cheapest bus trips Saturday

Prices are for one way and one person
  • National Express
    7h 20m
    0
    16:45
    Cardiff
    Coach Station
    00:05
    Southampton
    Coach Station
    0
    National Express
    Economy
    £16
  • National Express
    6h 45m
    0
    18:45
    Cardiff
    Coach Station
    01:30
    Southampton
    Coach Station
    0
    National Express
    Economy
    £18
  • National Express
    7h 15m
    0
    19:45
    Cardiff
    Coach Station
    03:00
    Southampton
    Coach Station
    0
    National Express
    Economy
    £20
  • FlixBus
    6h 45m
    0
    10:40
    Cardiff
    Kingsway Coach Stop
    17:25
    Southampton
    Burgess Road
    0
    FlixBus
    Economy
    £25
  • FlixBus
    7h 0m
    0
    10:40
    Cardiff
    Kingsway Coach Stop
    17:40
    Southampton
    Coach Station
    0
    FlixBus
    Economy
    £25

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 18 daily coaches from Cardiff to Southampton. Tuesday has instead the fewest connections, with only 16 daily coaches between Cardiff and Southampton.
The busiest time of the day is the Morning, with 49 coaches from Cardiff to Southampton, while Evening sees the fewest connections between Cardiff and Southampton, with 14 offers.

Enjoy these deals on your way from Cardiff to Southampton

National Express-Travelling with kids? Save big with our exclusive offer!
National Express

Travelling with kids? Save big with our exclusive offer!

All facts for Cardiff to Southampton bus at a glance

Compare all coach operators like National Express and FlixBus that travel daily 16 times by bus from Cardiff to Southampton in one click. Book your Cardiff to Southampton bus ticket starting from £15!

Cheapest Bus £15
Fastest Bus 5h 10m
Earliest Coach 03:40
Latest Coach 19:45
Daily Bus Connections 16 Ø
Distance 139.1 km
Coach Companies National Express and FlixBus

What are the cheapest coach tickets from Cardiff to Southampton?

Every day, 16 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 06/07/2025 and for the following days. Make sure get the cheapest bus ticket!

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

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 £15, Monday is the cheapest day for a coach from Cardiff to Southampton. Sunday instead is the most expensive day with prices starting from £22.
Afternoon is the cheapest day time for bus tickets from Cardiff to Southampton, with £15. Night is the most expensive time of the day with prices starting from £40.

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 £15
Fastest Coach 5h 10m
Earliest Coach 03:40
Last Coach 19:45
Daily Connections 10 Ø
Found on 04/07/2025

FlixBus from Cardiff to Southampton

FlixBus

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

Cheapest Price £22
Fastest Coach 6h 20m
Earliest Coach 06:45
Last Coach 16:45
Daily Connections 6 Ø
Found on 04/07/2025
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.

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 Southampton? Compare all modes of transports from Cardiff to Southampton.

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 £15 and takes 7h 20m. 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 £15 to £68. 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 16 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 £58. 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 03:40. 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.

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 Plymouth to Cardiff Buses Plymouth to Cardiff
Coaches Swindon to Cardiff Coaches Swindon to Cardiff
Bus Hereford to Cardiff Bus Hereford to Cardiff
Bus Oxford to Cardiff Bus Oxford to Cardiff
Coaches Leeds to Southampton Coaches Leeds to Southampton
Buses Reading to Southampton Buses Reading to Southampton
Coaches Brighton to Southampton Coaches Brighton to Southampton
Coaches Leicester to Southampton Coaches Leicester to Southampton
Popular Airport Transfers to Cardiff and to Southampton
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