Which bus from Cardiff to Southampton is the cheapest?

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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
$19
tomorrow
$17
Thursday
$21
Friday
$26
Saturday
$17
Sunday
$22
Monday
$17

Cheapest bus trips today

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 7h 0m 6:00 PM Cardiff Coach Station 1:00 AM Southampton Bus Station  Economy $19
FlixBus 8h 35m 2:50 PM Cardiff Kingsway Bus Stop 11:25 PM Southampton Bus Station  Economy $20
FlixBus 6h 40m 6:45 AM Cardiff Kingsway Bus Stop 1:25 PM Southampton University  Economy $20
FlixBus 8h 20m 2:50 PM Cardiff Kingsway Bus Stop 11:10 PM Southampton University  Economy $20
National Express 7h 45m 7:15 PM Cardiff Coach Station 3:00 AM Southampton Bus Station  Economy $22

Cheapest bus trips tomorrow

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 7h 0m 6:00 PM Cardiff Coach Station 1:00 AM Southampton Bus Station  Economy $17
National Express 7h 45m 7:15 PM Cardiff Coach Station 3:00 AM Southampton Bus Station  Economy $17
FlixBus 6h 55m 6:45 AM Cardiff Kingsway Bus Stop 1:40 PM Southampton Bus Station  Economy $20
FlixBus 8h 35m 2:50 PM Cardiff Kingsway Bus Stop 11:25 PM Southampton Bus Station  Economy $20
FlixBus 6h 40m 6:45 AM Cardiff Kingsway Bus Stop 1:25 PM Southampton University  Economy $20

Cheapest bus trips Thursday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 8h 20m 2:50 PM Cardiff Kingsway Bus Stop 11:10 PM Southampton University  Economy $21
FlixBus 8h 35m 2:50 PM Cardiff Kingsway Bus Stop 11:25 PM Southampton Bus Station  Economy $21
National Express 7h 0m 6:00 PM Cardiff Coach Station 1:00 AM Southampton Bus Station  Economy $22
FlixBus 6h 40m 6:45 AM Cardiff Kingsway Bus Stop 1:25 PM Southampton University  Economy $22
National Express 7h 45m 7:15 PM Cardiff Coach Station 3:00 AM Southampton Bus Station  Economy $23
  • Did you know that if you travel from Cardiff to Southampton via Bristol, you can save more than $2? You can find the corresponding connections below.
    • National Express
      8h 30m
      0
      6:15 PM
      Cardiff
      University
      7:20 PM
      Bristol
      Coach Station
      0
      National Express
      Economy
      $4
      • Waiting Time 1h 25m
    • National Express
      6h 0m
      0
      8:45 PM
      Bristol
      Coach Station
      2:45 AM
      Southampton
      University
      0
      National Express
      Economy
      $15
    Travel time is 1h 50m longer, but you will save $2

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 4:45 PM Cardiff Coach Station 12:05 AM Southampton Bus Station  Economy $26
National Express 7h 15m 7:45 PM Cardiff Coach Station 3:00 AM Southampton Bus Station  Economy $26
FlixBus 6h 40m 6:45 AM Cardiff Kingsway Bus Stop 1:25 PM Southampton University  Economy $27
FlixBus 6h 55m 6:45 AM Cardiff Kingsway Bus Stop 1:40 PM Southampton Bus Station  Economy $27
National Express 6h 45m 6:45 PM Cardiff Coach Station 1:30 AM Southampton Bus Station  Economy $29
  • 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.
    • National Express
      8h 30m
      0
      6:15 PM
      Cardiff
      University
      7:20 PM
      Bristol
      Coach Station
      0
      National Express
      Economy
      $4
      • Waiting Time 1h 25m
    • National Express
      6h 0m
      0
      8:45 PM
      Bristol
      Coach Station
      2:45 AM
      Southampton
      University
      0
      National Express
      Economy
      $15
    Travel time is 1h 50m longer, but you will save $7

Cheapest bus trips Saturday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 6h 45m 6:45 PM Cardiff Coach Station 1:30 AM Southampton Bus Station  Economy $17
National Express 7h 20m 4:45 PM Cardiff Coach Station 12:05 AM Southampton Bus Station  Economy $18
National Express 7h 15m 7:45 PM Cardiff Coach Station 3:00 AM Southampton Bus Station  Economy $18
FlixBus 6h 55m 6:45 AM Cardiff Kingsway Bus Stop 1:40 PM Southampton Bus Station  Economy $24
FlixBus 6h 40m 6:45 AM Cardiff Kingsway Bus Stop 1:25 PM Southampton University  Economy $25

Cheapest bus trips Sunday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 7h 15m 7:45 PM Cardiff Coach Station 3:00 AM Southampton Bus Station  Economy $22
FlixBus 6h 40m 6:45 AM Cardiff Kingsway Bus Stop 1:25 PM Southampton University  Economy $25
FlixBus 6h 55m 6:45 AM Cardiff Kingsway Bus Stop 1:40 PM Southampton Bus Station  Economy $26
National Express 7h 20m 4:45 PM Cardiff Coach Station 12:05 AM Southampton Bus Station  Economy $27
National Express 6h 45m 6:45 PM Cardiff Coach Station 1:30 AM Southampton Bus Station  Economy $30
  • 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.
    • National Express
      8h 30m
      0
      6:15 PM
      Cardiff
      University
      7:20 PM
      Bristol
      Coach Station
      0
      National Express
      Economy
      $4
      • Waiting Time 1h 55m
    • National Express
      5h 30m
      0
      9:15 PM
      Bristol
      Coach Station
      2:45 AM
      Southampton
      University
      0
      National Express
      Economy
      $14
    Travel time is 1h 50m longer, but you will save $4

Cheapest bus trips Monday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
National Express 7h 20m 4:45 PM Cardiff Coach Station 12:05 AM Southampton Bus Station  Economy $17
National Express 6h 45m 6:45 PM Cardiff Coach Station 1:30 AM Southampton Bus Station  Economy $17
National Express 7h 15m 7:45 PM Cardiff Coach Station 3:00 AM Southampton Bus Station  Economy $19
FlixBus 6h 40m 6:45 AM Cardiff Kingsway Bus Stop 1:25 PM Southampton University  Economy $22
FlixBus 8h 20m 2:50 PM Cardiff Kingsway Bus Stop 11:10 PM Southampton University  Economy $22

Best Price Offer: The price for the cheapest bus from Cardiff to Southampton is $17 on 1/26/2026. 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 18 daily buses 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 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 $17!

Cheapest Bus $17
Fastest Bus 5h 10m
Earliest Bus 3:25 AM
Latest Bus 7:45 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 01/27/2026 and for the following days.

Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday 01/25
Monday 01/26
Tuesday 01/27
$19
Wednesday 01/28
$17
Thursday 01/29
$22
Friday 01/30
$26
Saturday 01/31
$17
Sunday 02/01
$22
Monday 02/02
$17
Tuesday 02/03
$19
Wednesday 02/04
$17
Thursday 02/05
$19
Friday 02/06
$22
Saturday 02/07
$17
Sunday 02/08
$19
Monday 02/09
$17
Tuesday 02/10
$19
Wednesday 02/11
$17
Thursday 02/12
$18
Friday 02/13
$17
Saturday 02/14
$17
Sunday 02/15
$23
Monday 02/16
$17
Tuesday 02/17
$18
Wednesday 02/18
$17
Thursday 02/19
Friday 02/20
$17
Saturday 02/21

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 $17, Monday is the cheapest day for a bus from Cardiff to Southampton. Sunday instead is the most expensive day with prices starting from $19.
Afternoon is the cheapest day time for bus tickets from Cardiff to Southampton, with $17. Morning is the most expensive time of the day with prices starting from $20.

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.

Beloved bus companies from Cardiff to Southampton

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

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 $17
Fastest Bus 5h 10m
Earliest Bus 3:25 AM
Last Bus 7:45 PM
Daily Connections 10 Ø
Found on 1/26/2026

FlixBus from Cardiff to Southampton

FlixBus

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

Cheapest Price $20
Fastest Bus 6h 25m
Earliest Bus 6:45 AM
Last Bus 2:50 PM
Daily Connections 6 Ø
Found on 1/26/2026

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.

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 $17 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 $17 and $90. 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 $76. 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 3:25 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 Cardiff to Southampton?

The latest bus trip departing from Cardiff for Southampton starts at 7:45 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.

How does CheckMyBus find the best bus 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 16 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 16 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 will find all the details about your bus route!
Bus Neyland to Cardiff Bus Neyland to Cardiff
Bus Broadstairs - Cardiff Bus Broadstairs - Cardiff
From Bridgwater to Cardiff bus From Bridgwater to Cardiff bus
Bus from Inverness to Cardiff Bus from Inverness to Cardiff
Bus Newport (Wales) to Southampton Bus Newport (Wales) to Southampton
Buses to Southampton from Axminster Buses to Southampton from Axminster
Bus Stonehenge to Southampton Bus Stonehenge to Southampton
Bus Newcastle upon Tyne to Southampton Bus Newcastle upon Tyne to Southampton
Popular Airport Shuttles to Cardiff and to Southampton
CheckMyBus › Buses in United Kingdom › Bus to Cardiff › Bus to Southampton

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