Bus from Southampton to Cardiff from $16

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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
from $20
tomorrow
from $20
Monday
from $16
Tuesday
from $16
Wednesday
from $20
Thursday
from $22
Friday
from $22

Cheapest bus trips today

Prices are for one way and one person
  • National Express
    6h 25m
    0
    8:30 PM
    Southampton
    Bus Station
    2:55 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $20
  • National Express
    7h 10m
    0
    12:05 PM
    Southampton
    Bus Station
    7:15 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $29
  • National Express
    6h 50m
    0
    5:00 AM
    Southampton
    Bus Station
    11:50 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $30
  • National Express
    6h 5m
    0
    2:20 PM
    Southampton
    Bus Station
    8:25 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $64
  • National Express
    6h 30m
    0
    3:30 PM
    Southampton
    Bus Station
    10:00 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $64
  • Did you know that if you travel from Southampton to Cardiff via Bristol, you can save more than $2? You can find the corresponding connections below.
    • National Express
      7h 43m
      0
      6:32 AM
      Southampton
      University
      12:15 PM
      Bristol
      Coach Station
      0
      National Express
      Economy
      $12
      • Waiting Time 0h 30m
    • FlixBus
      1h 30m
      0
      12:45 PM
      Bristol
      Coach Station
      2:15 PM
      Cardiff
      Lloyd George Avenue
      0
      FlixBus
      Economy
      $6
    Travel time is 1h 38m longer, but you will save $2

Cheapest bus trips tomorrow

Prices are for one way and one person
  • National Express
    6h 25m
    0
    8:30 PM
    Southampton
    Bus Station
    2:55 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $20
  • National Express
    6h 50m
    0
    5:00 AM
    Southampton
    Bus Station
    11:50 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $26
  • National Express
    7h 10m
    0
    12:05 PM
    Southampton
    Bus Station
    7:15 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $49
  • National Express
    5h 50m
    0
    4:50 PM
    Southampton
    Bus Station
    10:40 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $60
  • National Express
    6h 30m
    0
    4:30 AM
    Southampton
    Bus Station
    11:00 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $64
  • Did you know that if you travel from Southampton to Cardiff via Bristol, you can save more than $2? You can find the corresponding connections below.
    • National Express
      7h 43m
      0
      6:32 AM
      Southampton
      University
      12:15 PM
      Bristol
      Coach Station
      0
      National Express
      Economy
      $12
      • Waiting Time 0h 30m
    • FlixBus
      1h 30m
      0
      12:45 PM
      Bristol
      Coach Station
      2:15 PM
      Cardiff
      Lloyd George Avenue
      0
      FlixBus
      Economy
      $6
    Travel time is 1h 53m longer, but you will save $2

Cheapest bus trips Monday

Prices are for one way and one person
  • National Express
    6h 25m
    0
    8:30 PM
    Southampton
    Bus Station
    2:55 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $16
  • National Express
    7h 15m
    0
    4:45 AM
    Southampton
    Bus Station
    12:00 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $21
  • National Express
    7h 30m
    0
    12:05 PM
    Southampton
    Bus Station
    7:35 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $36
  • National Express
    6h 40m
    0
    4:20 AM
    Southampton
    Bus Station
    11:00 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $64
  • National Express
    6h 30m
    0
    2:20 PM
    Southampton
    Bus Station
    8:50 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $64

Cheapest bus trips Tuesday

Prices are for one way and one person
  • National Express
    7h 20m
    0
    8:30 AM
    Southampton
    Bus Station
    3:50 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $16
  • National Express
    7h 35m
    0
    12:05 PM
    Southampton
    Bus Station
    7:40 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $16
  • National Express
    6h 45m
    0
    8:30 PM
    Southampton
    Bus Station
    3:15 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $16
  • National Express
    6h 40m
    0
    4:20 AM
    Southampton
    Bus Station
    11:00 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $42
  • National Express
    6h 50m
    0
    9:30 AM
    Southampton
    Bus Station
    4:20 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $42

Cheapest bus trips Wednesday

Prices are for one way and one person
  • National Express
    6h 45m
    0
    8:30 PM
    Southampton
    Bus Station
    3:15 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $20
  • National Express
    7h 35m
    0
    12:05 PM
    Southampton
    Bus Station
    7:40 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $22
  • National Express
    5h 45m
    0
    4:55 PM
    Southampton
    Bus Station
    10:40 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $51
  • National Express
    6h 40m
    0
    4:20 AM
    Southampton
    Bus Station
    11:00 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $60
  • National Express
    6h 20m
    0
    6:30 PM
    Southampton
    Bus Station
    12:50 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $60
  • Did you know that if you travel from Southampton to Cardiff via Bristol, you can save more than $2? You can find the corresponding connections below.
    • National Express
      7h 43m
      0
      6:32 AM
      Southampton
      University
      12:15 PM
      Bristol
      Coach Station
      0
      National Express
      Economy
      $12
      • Waiting Time 0h 30m
    • FlixBus
      1h 30m
      0
      12:45 PM
      Bristol
      Coach Station
      2:15 PM
      Cardiff
      Lloyd George Avenue
      0
      FlixBus
      Economy
      $6
    Travel time is 1h 58m longer, but you will save $2

Cheapest bus trips Thursday

Prices are for one way and one person
  • National Express
    6h 45m
    0
    8:30 PM
    Southampton
    Bus Station
    3:15 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $22
  • FlixBus
    7h 25m
    0
    11:10 AM
    Southampton
    Burgess Road
    6:35 PM
    Cardiff
    Kingsway Bus Stop
    0
    FlixBus
    Economy
    $22
  • FlixBus
    7h 5m
    0
    5:15 PM
    Southampton
    Burgess Road
    12:20 AM
    Cardiff
    Kingsway Bus Stop
    0
    FlixBus
    Economy
    $25
  • FlixBus
    6h 45m
    0
    7:30 AM
    Southampton
    Burgess Road
    2:15 PM
    Cardiff
    Kingsway Bus Stop
    0
    FlixBus
    Economy
    $29
  • National Express
    7h 35m
    0
    12:05 PM
    Southampton
    Bus Station
    7:40 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $32
  • Did you know that if you travel from Southampton to Cardiff via Bristol, you can save more than $5? You can find the corresponding connections below.
    • FlixBus
      8h 50m
      0
      5:15 PM
      Southampton
      Burgess Road
      12:25 AM
      Bristol
      Coldharbour Lane
      0
      FlixBus
      Economy
      $9
      • Waiting Time 0h 25m
    • FlixBus
      1h 15m
      0
      12:50 AM
      Bristol
      Coach Station
      2:05 AM
      Cardiff
      Kingsway Bus Stop
      0
      FlixBus
      Economy
      $7
    Travel time is 2h 5m longer, but you will save $5

Cheapest bus trips Friday

Prices are for one way and one person
  • National Express
    7h 50m
    0
    12:05 PM
    Southampton
    Bus Station
    7:55 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $22
  • National Express
    6h 25m
    0
    8:30 PM
    Southampton
    Bus Station
    2:55 AM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $22
  • National Express
    7h 15m
    0
    4:45 AM
    Southampton
    Bus Station
    12:00 PM
    Cardiff
    Coach Station
    0
    National Express
    Economy
    $25
  • FlixBus
    7h 25m
    0
    11:10 AM
    Southampton
    Burgess Road
    6:35 PM
    Cardiff
    Kingsway Bus Stop
    0
    FlixBus
    Economy
    $32
  • FlixBus
    7h 5m
    0
    5:15 PM
    Southampton
    Burgess Road
    12:20 AM
    Cardiff
    Kingsway Bus Stop
    0
    FlixBus
    Economy
    $32
  • Did you know that if you travel from Southampton to Cardiff via Bristol, you can save more than $5? You can find the corresponding connections below.
    • FlixBus
      8h 50m
      0
      5:15 PM
      Southampton
      Burgess Road
      12:25 AM
      Bristol
      Coldharbour Lane
      0
      FlixBus
      Economy
      $9
      • Waiting Time 0h 25m
    • FlixBus
      1h 15m
      0
      12:50 AM
      Bristol
      Coach Station
      2:05 AM
      Cardiff
      Kingsway Bus Stop
      0
      FlixBus
      Economy
      $7
    Travel time is 2h 25m longer, but you will save $5

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.
Friday is the busiest day, with more than 18 daily buses from Southampton to Cardiff. Wednesday has instead the fewest connections, with only 14 daily coaches between Southampton and Cardiff.
The busiest time of the day is the Morning, with 40 buses from Southampton to Cardiff, while Evening sees the fewest connections between Southampton and Cardiff, with 14 offers.

Facts about the bus from Southampton to Cardiff

Compare all providers like National Express and FlixBus that travel 15 times every day by bus from Southampton to Cardiff in one click! Book your bus ticket from Southampton to Cardiff starting from $16!

Cheapest Bus $16
Fastest Bus 5h 25m
Earliest Bus 5:00 AM
Latest Bus 8:30 PM
Daily Bus Routes 15 Ø
Distance 86.4 miles
Bus Companies National Express and FlixBus

Cheapest bus connections from Southampton to Cardiff

Every day, 15 buses from 2 bus companies leave Southampton for Cardiff: in the table below, you will find the cheapest prices for a bus ticket for this route, starting from 05/10/2025 and for the following days.

Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday 05/04
Monday 05/05
Tuesday 05/06
Wednesday 05/07
Thursday 05/08
Friday 05/09
Saturday 05/10
$20
Sunday 05/11
$20
Monday 05/12
$16
Tuesday 05/13
$16
Wednesday 05/14
$20
Thursday 05/15
$22
Friday 05/16
$22
Saturday 05/17
$18
Sunday 05/18
$17
Monday 05/19
$16
Tuesday 05/20
Wednesday 05/21
$19
Thursday 05/22
$18
Friday 05/23
$34
Saturday 05/24
$28
Sunday 05/25
$25
Monday 05/26
$22
Tuesday 05/27
$22
Wednesday 05/28
$22
Thursday 05/29
$22
Friday 05/30
$25
Saturday 05/31

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 $16, Monday is the cheapest day for a bus from Southampton to Cardiff. Thursday instead is the most expensive day with prices starting from $22.
Morning is the cheapest day time for bus tickets from Southampton to Cardiff, with $16. Night is the most expensive time of the day with prices starting from $21.

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 buses 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 $16
Fastest Bus 5h 25m
Earliest Bus 5:00 AM
Last Bus 8:30 PM
Daily Connections 14 Ø
Found on 5/9/2025

All bus stations and stops in Southampton and Cardiff

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

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

Service and Comfort on the bus from Southampton to Cardiff

Want to know which seat classes are available on the buses 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 bus trip cost?

This depends on, among other things, the day and time of travel. The cheapest trip is available from $16 and takes 6h 25m to reach Cardiff. Compare offers to save money!

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

This route is offered by 2 companies with a range of ticket prices between $16 and $90. Thus, we recommend booking your ticket as early as possible to make sure you get the cheapest bus ticket to Cardiff.

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

Every day, the Southampton to Cardiff bus route is served by approximately 15 connections. With our search, you can compare bus times to find the perfect trip.

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

The fastest bus from Southampton to Cardiff is offered by National Express and takes 5h 25m. Bus tickets for this connection cost $76. In this context, bear in mind that the journey can take longer due to traffic.

What time is the first bus from Southampton to Cardiff?

The earliest bus arriving in Cardiff from Southampton starts at 5:00 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 Southampton to Cardiff?

The latest bus trip departing from Southampton for Cardiff starts at 8:30 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 Southampton Cardiff route?

When traveling by bus from Southampton to Cardiff, 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 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 Southampton to Cardiff 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 Southampton Cardiff 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 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 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 Southampton to Cardiff on your planned travel date.

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!
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Bus from Bridgend to Cardiff Bus from Bridgend to Cardiff
Buses from Glasgow to Cardiff Buses from Glasgow to Cardiff
From Tenby to Cardiff bus From Tenby to Cardiff bus
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Popular Airport Shuttles to Southampton and to Cardiff
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