Bus tickets Southampton to Cardiff from £15

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Compare all timetables for the bus from Southampton to Cardiff

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

today
£32
tomorrow
£20
Sunday
£36
Monday
£17
Tuesday
£16
Wednesday
£15
Thursday
£17

Cheapest bus trips today

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 7h 25m 17:00 Southampton Coach Station 00:25 Cardiff Kingsway Coach Stop  Economy £32
FlixBus 7h 10m 17:15 Southampton University 00:25 Cardiff Kingsway Coach Stop  Economy £32
National Express 5h 10m 20:30 Southampton Coach Station 01:40 Cardiff Coach Station  Economy £46
National Express 6h 25m 12:15 Southampton Coach Station 18:40 Cardiff Coach Station  Economy £55
National Express 5h 20m 17:20 Southampton Coach Station 22:40 Cardiff Coach Station  Economy £55
  • Did you know that if you travel from Southampton to Cardiff via Bristol, you can save more than £10? You can find the corresponding connections below.
    • FlixBus
      6h 25m
      0
      07:15
      Southampton
      Coach Station
      12:00
      Bristol
      Coach Station
      0
      FlixBus
      Economy
      £16
      • Waiting Time 0h 10m
    • FlixBus
      1h 30m
      0
      12:10
      Bristol
      Coach Station
      13:40
      Cardiff
      Kingsway Coach Stop
      0
      FlixBus
      Economy
      £6
    Travel time is 1h 15m longer, but you will save £10

Cheapest bus trips tomorrow

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 6h 15m 17:00 Southampton Coach Station 23:15 Cardiff Kingsway Coach Stop  Economy £20
FlixBus 6h 0m 17:15 Southampton University 23:15 Cardiff Kingsway Coach Stop  Economy £20
FlixBus 7h 35m 11:00 Southampton University 18:35 Cardiff Kingsway Coach Stop  Economy £24
National Express 5h 10m 17:30 Southampton Coach Station 22:40 Cardiff Coach Station  Economy £46
National Express 5h 10m 20:30 Southampton Coach Station 01:40 Cardiff Coach Station  Economy £46

Cheapest bus trips Sunday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 5h 10m 20:30 Southampton Coach Station 01:40 Cardiff Coach Station  Economy £36
National Express 5h 10m 17:30 Southampton Coach Station 22:40 Cardiff Coach Station  Economy £39
National Express 5h 40m 06:45 Southampton Coach Station 12:25 Cardiff Coach Station  Economy £43
National Express 7h 0m 09:15 Southampton Coach Station 16:15 Cardiff Coach Station  Economy £44
National Express 6h 35m 13:15 Southampton Coach Station 19:50 Cardiff Coach Station  Economy £44
  • Did you know that if you travel from Southampton to Cardiff via Bristol, you can save more than £18? You can find the corresponding connections below.
    • FlixBus
      7h 10m
      0
      17:15
      Southampton
      University
      23:00
      Bristol
      Coach Station
      0
      FlixBus
      Economy
      £13
      • Waiting Time 0h 10m
    • FlixBus
      1h 15m
      0
      23:10
      Bristol
      Coach Station
      00:25
      Cardiff
      Kingsway Coach Stop
      0
      FlixBus
      Economy
      £5
    Travel time is 2h 0m longer, but you will save £18

Cheapest bus trips Monday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 7h 25m 17:00 Southampton Coach Station 00:25 Cardiff Kingsway Coach Stop  Economy £17
FlixBus 7h 10m 17:15 Southampton University 00:25 Cardiff Kingsway Coach Stop  Economy £17
FlixBus 9h 15m 07:15 Southampton Coach Station 16:30 Cardiff Kingsway Coach Stop  Economy £21
National Express 5h 10m 17:30 Southampton Coach Station 22:40 Cardiff Coach Station  Economy £39
National Express 5h 10m 20:30 Southampton Coach Station 01:40 Cardiff Coach Station  Economy £39

Cheapest bus trips Tuesday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 7h 50m 10:45 Southampton Coach Station 18:35 Cardiff Kingsway Coach Stop  Economy £16
FlixBus 7h 25m 17:00 Southampton Coach Station 00:25 Cardiff Kingsway Coach Stop  Economy £16
FlixBus 7h 35m 11:00 Southampton University 18:35 Cardiff Kingsway Coach Stop  Economy £17
National Express 5h 10m 20:30 Southampton Coach Station 01:40 Cardiff Coach Station  Economy £39
National Express 6h 10m 16:30 Southampton Coach Station 22:40 Cardiff Coach Station  Economy £41

Cheapest bus trips Wednesday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 9h 15m 07:15 Southampton Coach Station 16:30 Cardiff Kingsway Coach Stop  Economy £15
FlixBus 7h 50m 10:45 Southampton Coach Station 18:35 Cardiff Kingsway Coach Stop  Economy £15
FlixBus 7h 35m 11:00 Southampton University 18:35 Cardiff Kingsway Coach Stop  Economy £15
National Express 5h 10m 20:30 Southampton Coach Station 01:40 Cardiff Coach Station  Economy £31
National Express 6h 10m 16:30 Southampton Coach Station 22:40 Cardiff Coach Station  Economy £34

Cheapest bus trips Thursday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 9h 15m 07:15 Southampton Coach Station 16:30 Cardiff Kingsway Coach Stop  Economy £17
FlixBus 7h 50m 10:45 Southampton Coach Station 18:35 Cardiff Kingsway Coach Stop  Economy £20
FlixBus 7h 35m 11:00 Southampton University 18:35 Cardiff Kingsway Coach Stop  Economy £20
National Express 6h 10m 16:30 Southampton Coach Station 22:40 Cardiff Coach Station  Economy £35
National Express 5h 10m 20:30 Southampton Coach Station 01:40 Cardiff Coach Station  Economy £35

Best Price Offer: The price for the cheapest coach from Southampton to Cardiff is £15 on 25/03/2026. Flexible travellers save on ticket prices.


Frequency of bus connections between Southampton and Cardiff

See here how frequent the connections between Southampton and Cardiff are, during different times and days of the week.
Saturday is the busiest day, with more than 18 daily coaches from Southampton to Cardiff. Friday has instead the fewest connections, with only 7 daily coaches between Southampton and Cardiff.
The busiest time of the day is the Afternoon, with 41 coaches from Southampton to Cardiff, while Night sees the fewest connections between Southampton and Cardiff, with 12 offers.

Facts about coaches from Southampton to Cardiff

Compare all providers like National Express and FlixBus that travel 14 times every day by bus from Southampton to Cardiff in one click! Book your bus ticket from Southampton to Cardiff starting from £15!

Cheapest Bus £15
Fastest Bus 5h 10m
Earliest Coach 12:15
Latest Coach 20:30
Daily Bus Connections 14 Ø
Distance 139.1 km
Coach Companies National Express and FlixBus

Cheapest coach connections from Southampton to Cardiff

Every day, 14 buses from 2 coach companies leave Southampton for Cardiff: in the table below, you will find the cheapest prices for a bus ticket for this route, starting from 20/03/2026 and for the following days.

Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday 16/03
Tuesday 17/03
Wednesday 18/03
Thursday 19/03
Friday 20/03
£30
Saturday 21/03
£20
Sunday 22/03
£36
Monday 23/03
£17
Tuesday 24/03
£16
Wednesday 25/03
£31
Thursday 26/03
£17
Friday 27/03
£22
Saturday 28/03
£24
Sunday 29/03
£25
Monday 30/03
£21
Tuesday 31/03
£18
Wednesday 01/04
£20
Thursday 02/04
£20
Friday 03/04
£18
Saturday 04/04
£21
Sunday 05/04
£20
Monday 06/04
£62
Tuesday 07/04
£19
Wednesday 08/04
£18
Thursday 09/04
£34
Friday 10/04
£34
Saturday 11/04
£18
Sunday 12/04

The cheapest time to travel from Southampton to Cardiff

See here on which day and which time of the day you can find the cheapest bus ticket from Southampton to Cardiff, for the next 30 days.
With a price starting from £14, Tuesday is the cheapest day for a coach from Southampton to Cardiff. Sunday instead is the most expensive day with prices starting from £19.
Night is the cheapest day time for bus tickets from Southampton to Cardiff, with £14. Evening is the most expensive time of the day with prices starting from £31.

How to save money travelling from Southampton 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 Southampton 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 Southampton 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 coaches from Southampton to Cardiff are also emptier.

Beloved bus companies from Southampton to Cardiff

These are the most booked bus companies between Southampton to Cardiff from our users.

National Express from Southampton to Cardiff

National Express

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

Cheapest Price £31
Fastest Coach 5h 10m
Earliest Coach 12:15
Last Coach 20:30
Daily Connections 10 Ø
Found on 20/03/2026

All bus stations and stops in Southampton and Cardiff

The map below shows you where to find all the bus stations in Southampton and Cardiff.

Service and Comfort on the bus from Southampton to Cardiff

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

FAQs about the Southampton to Cardiff bus

How much does a Southampton - Cardiff coach trip cost?

This depends on, among other things, the day and travel time. The cheapest ticket for the Southampton - Cardiff bus trip is available from £15 and takes 9h 15m. Compare offers and save money!

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

The connection Southampton to Cardiff is offered by 2 companies with ticket prices ranging from £15 to £74. Therefore, we suggest booking your ticket as soon as possible to ensure you will get the cheapest ticket price.

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

Each day, the bus route from Southampton to Cardiff is offered by roughly 14 busses. By using our search, you can compare bus schedules and find your ideal trip.

How long does a bus to Cardiff from Southampton take?

The quickest coach from Southampton to Cardiff is provided by National Express and takes 5h 10m. Coach tickets for this connection cost £46. However, keep in mind that the connection can take longer due to traffic.

What time is the first bus from Southampton to Cardiff?

The earliest bus to Cardiff departs from Southampton at 12:15. 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 Southampton to Cardiff?

The latest bus to Cardiff departs from Southampton at 20:30. 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 Southampton - Cardiff route?

Passengers looking to travel from Southampton to Cardiff 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 Southampton and Cardiff?

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

What can I take with me on the bus to Cardiff from Southampton?

Depending on which provider you travel with, what you are allowed to bring with you can vary. Generally, you can take a suitcase and hand luggage with you on the bus for the Southampton Cardiff 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 Southampton 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 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 Southampton to Cardiff on your planned travel date.

How does CheckMyBus find the best bus deals from Southampton 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 14 daily trips between Southampton 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 Southampton to Cardiff?

Prices and availability for 14 trips between Southampton 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 Southampton to Cardiff

Economy
Economy

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

More bus routes to Southampton and to Cardiff

Here’s an overview of the most popular bus routes to Southampton and to Cardiff. Simply click on the connection of your choice, and you will find all the details about your bus route!
Boston to Southampton bus Boston to Southampton bus
Bus from Hatfield to Southampton Bus from Hatfield to Southampton
Coach from Dunfermline to Southampton Coach from Dunfermline to Southampton
Cosham to Southampton coach Cosham to Southampton coach
Bus from Burnley to Cardiff Bus from Burnley to Cardiff
Coach Paignton to Cardiff Coach Paignton to Cardiff
Lampeter to Cardiff coach Lampeter to Cardiff coach
Bus to Cardiff from Chepstow Bus to Cardiff from Chepstow
Popular Airport Transfers to Southampton and to Cardiff
CheckMyBus › Coaches in United Kingdom › Coach to Southampton › Coach to Cardiff

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