Bus from Southampton to Cardiff from $18

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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
$29
tomorrow
$38
Saturday
$31
Sunday
$27
Monday
$32
Tuesday
$33
Wednesday
$39

Cheapest bus trips today

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 7h 20m 5:00 PM Southampton Bus Station 12:20 AM Cardiff Kingsway Bus Stop  Economy $29
FlixBus 7h 5m 5:15 PM Southampton University 12:20 AM Cardiff Kingsway Bus Stop  Economy $30
FlixBus 7h 45m 10:50 AM Southampton Bus Station 6:35 PM Cardiff Kingsway Bus Stop  Economy $33
National Express 6h 0m 3:00 PM Southampton Bus Station 9:00 PM Cardiff Coach Station  Economy $61
National Express 6h 25m 12:15 PM Southampton Bus Station 6:40 PM Cardiff Coach Station  Economy $63

Cheapest bus trips tomorrow

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 7h 20m 5:00 PM Southampton Bus Station 12:20 AM Cardiff Kingsway Bus Stop  Economy $38
FlixBus 7h 5m 5:15 PM Southampton University 12:20 AM Cardiff Kingsway Bus Stop  Economy $38
FlixBus 7h 20m 9:15 AM Southampton Bus Station 4:35 PM Cardiff Kingsway Bus Stop  Economy $41
National Express 6h 0m 6:25 AM Southampton Bus Station 12:25 PM Cardiff Coach Station  Economy $84
National Express 6h 15m 10:45 AM Southampton Bus Station 5:00 PM Cardiff Coach Station  Economy $84
  • Did you know that if you travel from Southampton to Cardiff via Bristol, you can save more than $4? You can find the corresponding connections below.
    • National Express
      8h 40m
      0
      1:35 PM
      Southampton
      University
      8:15 PM
      Bristol
      Black Boy Hill
      0
      National Express
      Economy
      $25
      • Waiting Time 0h 40m
    • FlixBus
      1h 20m
      0
      8:55 PM
      Bristol
      Coach Station
      10:15 PM
      Cardiff
      Kingsway Bus Stop
      0
      FlixBus
      Economy
      $9
    Travel time is 2h 40m longer, but you will save $4

Cheapest bus trips Saturday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 7h 20m 5:00 PM Southampton Bus Station 12:20 AM Cardiff Kingsway Bus Stop  Economy $31
FlixBus 7h 5m 5:15 PM Southampton University 12:20 AM Cardiff Kingsway Bus Stop  Economy $31
FlixBus 7h 45m 10:50 AM Southampton Bus Station 6:35 PM Cardiff Kingsway Bus Stop  Economy $35
National Express 6h 45m 4:15 AM Southampton Bus Station 11:00 AM Cardiff Coach Station  Economy $70
National Express 5h 50m 2:45 PM Southampton Bus Station 8:35 PM Cardiff Coach Station  Economy $70

Cheapest bus trips Sunday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 7h 5m 5:15 PM Southampton 12:20 AM Cardiff Kingsway Bus Stop  Economy $27
FlixBus 7h 25m 11:10 AM Southampton 6:35 PM Cardiff Kingsway Bus Stop  Economy $31
FlixBus 7h 5m 9:30 AM Southampton 4:35 PM Cardiff Kingsway Bus Stop  Economy $39
National Express 6h 10m 12:15 PM Southampton Bus Station 6:25 PM Cardiff Coach Station  Economy $70
National Express 5h 50m 2:45 PM Southampton Bus Station 8:35 PM Cardiff Coach Station  Economy $70

Cheapest bus trips Monday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 7h 5m 5:15 PM Southampton University 12:20 AM Cardiff Kingsway Bus Stop  Economy $32
FlixBus 7h 20m 5:00 PM Southampton Bus Station 12:20 AM Cardiff Kingsway Bus Stop  Economy $33
FlixBus 7h 45m 10:50 AM Southampton Bus Station 6:35 PM Cardiff Kingsway Bus Stop  Economy $40
National Express 6h 45m 4:15 AM Southampton Bus Station 11:00 AM Cardiff Coach Station  Economy $80
National Express 6h 0m 6:25 AM Southampton Bus Station 12:25 PM Cardiff Coach Station  Economy $80

Cheapest bus trips Tuesday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 7h 20m 5:00 PM Southampton Bus Station 12:20 AM Cardiff Kingsway Bus Stop  Economy $33
FlixBus 7h 5m 5:15 PM Southampton University 12:20 AM Cardiff Kingsway Bus Stop  Economy $34
FlixBus 7h 0m 7:15 AM Southampton Bus Station 2:15 PM Cardiff Kingsway Bus Stop  Economy $37
National Express 6h 0m 3:00 PM Southampton Bus Station 9:00 PM Cardiff Coach Station  Economy $67
National Express 6h 10m 4:30 PM Southampton Bus Station 10:40 PM Cardiff Coach Station  Economy $67

Cheapest bus trips Wednesday

Mode of Transport BertCompanyCountOneCompanyName Duration Departure time From Departure Arrival time To Destination Logo Seat classes Price
FlixBus 7h 5m 9:30 AM Southampton University 4:35 PM Cardiff Kingsway Bus Stop  Economy $39
FlixBus 7h 0m 7:15 AM Southampton Bus Station 2:15 PM Cardiff Kingsway Bus Stop  Economy $40
FlixBus 7h 20m 9:15 AM Southampton Bus Station 4:35 PM Cardiff Kingsway Bus Stop  Economy $40
National Express 6h 25m 12:15 PM Southampton Bus Station 6:40 PM Cardiff Coach Station  Economy $81
National Express 6h 0m 3:00 PM Southampton Bus Station 9:00 PM Cardiff Coach Station  Economy $81
  • Did you know that if you travel from Southampton to Cardiff via Bristol, you can save more than $6? You can find the corresponding connections below.
    • FlixBus
      7h 5m
      0
      5:15 PM
      Southampton
      University
      10:55 PM
      Bristol
      Coach Station
      0
      FlixBus
      Economy
      $24
      • Waiting Time 0h 10m
    • FlixBus
      1h 15m
      0
      11:05 PM
      Bristol
      Coach Station
      12:20 AM
      Cardiff
      Kingsway Bus Stop
      0
      FlixBus
      Economy
      $9
    Travel time is 1h 5m longer, but you will save $6

Best Price Offer: The price for the cheapest bus from Southampton to Cardiff is $18 on 1/6/2026. Flexible travelers 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.
Sunday is the busiest day, with more than 23 daily buses from Southampton to Cardiff. Thursday has instead the fewest connections, with only 14 daily coaches between Southampton and Cardiff.
The busiest time of the day is the Morning, with 60 buses from Southampton to Cardiff, while Night sees the fewest connections between Southampton and Cardiff, with 12 offers.

Facts about the bus from Southampton to Cardiff

Compare all providers like National Express and FlixBus that travel 18 times every day by bus from Southampton to Cardiff in one click! Book your bus ticket from Southampton to Cardiff starting from $18!

Cheapest Bus $18
Fastest Bus 5h 10m
Earliest Bus 8:45 AM
Latest Bus 6:30 PM
Daily Bus Routes 18 Ø
Distance 86.4 miles
Bus Companies National Express and FlixBus

Cheapest bus connections from Southampton to Cardiff

Every day, 18 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 12/18/2025 and for the following days.

Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday 12/14
Monday 12/15
Tuesday 12/16
Wednesday 12/17
Thursday 12/18
$29
Friday 12/19
$38
Saturday 12/20
$31
Sunday 12/21
$41
Monday 12/22
$32
Tuesday 12/23
$67
Wednesday 12/24
$39
Thursday 12/25
$160
Friday 12/26
$119
Saturday 12/27
$43
Sunday 12/28
$41
Monday 12/29
$31
Tuesday 12/30
$31
Wednesday 12/31
$33
Thursday 01/01
$30
Friday 01/02
$24
Saturday 01/03
$25
Sunday 01/04
$31
Monday 01/05
Tuesday 01/06
$18
Wednesday 01/07
$42
Thursday 01/08
Friday 01/09
$44
Saturday 01/10

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 $18, Tuesday is the cheapest day for a bus from Southampton to Cardiff. Wednesday instead is the most expensive day with prices starting from $33.
Night is the cheapest day time for bus tickets from Southampton to Cardiff, with $18. Evening is the most expensive time of the day with prices starting from $70.

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 $61
Fastest Bus 5h 10m
Earliest Bus 8:45 AM
Last Bus 6:30 PM
Daily Connections 11 Ø
Found on 12/17/2025

FlixBus from Southampton to Cardiff

FlixBus

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

Cheapest Price $27
Fastest Bus 7h 0m
Earliest Bus 9:15 AM
Last Bus 5:15 PM
Daily Connections 7 Ø
Found on 12/17/2025

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 $18 and takes 7h 5m 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 $18 and $98. 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 18 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 10m. Bus tickets for this connection cost $73. 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 8:45 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 6:30 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.

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 18 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 18 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!
Bus to Southampton from Manchester Bus to Southampton from Manchester
Buses to Southampton from Leicester Buses to Southampton from Leicester
Buses from Exeter to Southampton Buses from Exeter to Southampton
Buses Bath to Southampton Buses Bath to Southampton
Bus to Cardiff from Bristol Bus to Cardiff from Bristol
Buses from Bath to Cardiff Buses from Bath to Cardiff
Bus from Edinburgh to Cardiff Bus from Edinburgh to Cardiff
Buses from Swansea to Cardiff Buses from Swansea to Cardiff
Popular Airport Shuttles to Southampton and to Cardiff
CheckMyBus › Buses in United Kingdom › Bus to Southampton › Bus to Cardiff

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