How much is the bus ticket from Cardiff to Southampton?

The cheapest bus tickets from Cardiff to Southampton start from $19. The average price for this route is around $23. Busbud recommends that you book your tickets in advance for a better chance to get the lowest possible price.

How long is the bus ride from Cardiff to Southampton?

The average bus trip duration from Cardiff to Southampton is 7h 10m, covering a distance of 87 miles (141 km). The quickest bus can get you there in 6h 20m and is operated by FlixBus .

Which bus companies service the Cardiff to Southampton route?

Several major bus companies operate on this route with 21 buses available per day, including services from National Express , FlixBus .

What is the earliest and latest departure time for the bus from Cardiff to Southampton?

The earliest bus departs from Cardiff to Southampton at 3:10am. And the latest bus departs at 7:58pm.

What are the CO₂ emissions for the bus trip from Cardiff to Southampton?

A bus trip from Cardiff to Southampton generates an estimated 4 kg of CO₂, making it a highly eco-friendly travel option and recommended mode of travel by Busbud.

What is the best bus company from Cardiff to Southampton?

According to Busbud customers, the highest-rated bus company on this route is National Express , with an average rating of 4.2 out of 5 stars based on 29872 reviews.

Which bus company has the best Wi-Fi from Cardiff to Southampton?

Based on reviews on Busbud, the bus company National Express has the best Wi-Fi rating with a score of 3.4.

Which bus company has the most timely service from Cardiff to Southampton?

According to Busbud traveler reviews, the most timely bus company on this route is National Express , with a punctuality rating of 4.1 out of 5 stars.

Which bus company has the cleanest buses from Cardiff to Southampton?

According to Busbud traveler reviews, the bus company with the cleanest buses on this route is National Express , with a cleanliness rating of 4.7 out of 5 stars.

Bus Cardiff to Southampton from $17 | Refundable Tickets

Next bus departures

Next departures for Cardiff to Southampton on February 23
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Bus	5:00pm	Cardiff (Gabalfa Interchange, o/s Clinic)	6h 50m	11:50pm	University of Southampton	Cheapest
Bus	4:40pm	Cardiff North Road (Friary Gardens)	6h 30m	11:10pm	Southampton University	Fastest
Bus	3:25am	Cardiff (Gabalfa Interchange, o/s Clinic)	7h 35m	11:00am	University of Southampton	No tags
Bus	6:45am	Cardiff North Road (Friary Gardens)	6h 55m	1:40pm	Southampton	No tags
Bus	3:25am	Cardiff (Gabalfa Interchange, o/s Clinic)	7h 35m	11:00am	University of Southampton	No tags

Next departures for Cardiff to Southampton on February 24
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Bus	3:58pm	Cardiff (Gabalfa Interchange, o/s Clinic)	7h 22m	11:20pm	University of Southampton	Cheapest
Bus	4:40pm	Cardiff North Road (Friary Gardens)	6h 30m	11:10pm	Southampton University	Fastest
Bus	3:25am	Cardiff (Gabalfa Interchange, o/s Clinic)	7h 35m	11:00am	University of Southampton	No tags
Bus	6:45am	Cardiff North Road (Friary Gardens)	6h 55m	1:40pm	Southampton	No tags
Bus	3:25am	Cardiff (Gabalfa Interchange, o/s Clinic)	7h 35m	11:00am	University of Southampton	No tags

Last refresh of the prices: Last Monday at 10:19 AM GMT.

Compare 2 ways to go from Cardiff to Southampton

We recommend taking the train

Among the sustainable travel choices, the Train stands out as a good way to reach Southampton. The journey takes about 2 hours 36 minutes and with fares starting at just $35, it presents an excellent value for a comfortable ride.

6train per day

2h 36mAverage Duration

86 milesDistance

3kgCO₂ emissions

	Average Price	Average Duration	CO₂ emissions	Actions
Bus	Average Price$19 - $60	Average Duration7h 10m	CO₂ emissions 4kg CO₂e
Train	Average Price$35 - $90	Average Duration2h 36m	CO₂ emissions 3kg CO₂e

Where are the popular stops in Cardiff and Southampton?

Stops in Cardiff

A
Cardiff University (o/s Cathays Rail Stn)
50 Park Place (Bus Stop, o/s Cathays Rail Stn), Cardiff CF10
B
Sophia Gardens
2 Sophia Cl, Cardiff CF11, UK
Visit page
C
Cardiff Coach Station - Sophia Gardens
22 Cathedral Rd, Cardiff CF11 9LJ, UK
Visit page
D
Cardiff - Castle Street Bus Stop
21A Castle St, Cardiff CF10 1BT, UK
E
National Museum
Gorsedd Gardens Rd, Cardiff CF10 3NP, UK
F
Cardiff Bus Stop - Westgate
206 Westgate St, Cardiff CF10, UK

Stops in Southampton

A
Southampton Coach Station
20 Harbour Parade, Southampton SO15 1BA, UK
Visit page
B
Southampton Bus Stop
563 Vincents Walk, Southampton SO14, UK
C
W. Esplanade Bus Station - Southampton
Wyndham Pl, Southampton SO15, UK
D
Bus Stop Queensway
51-55 Above Bar St, Southampton, Southampton SO14 7DZ, UK
E
Southampton Central
Western Esplanade, Southampton SO15 1QJ, UK
F
Ferry Terminal
7 Town Quay, Southampton SO14 2ET, UK

Compare bus companies

National Express

4/529,875 reviews

Staff4.7

Timeliness4.1

Cleanliness4.7

Wifi3.4

Based on 29875 reviews, the company was rated 4.2 stars on Busbud. Travelers were especially satisfied with the ticket access and the staff but often complained with the wifi. National Express ticket prices on this trip start at $19

National Express Cardiff Southampton recent customer reviews

Very helpful drivers, great info about getting to our final destination. Pretty full as it was half-term but journey was good. Looking forward to the return trip in 16 days time. Good value for money.

Judith H.

February 13, 2024

FlixBus

3.5/512,235 reviews

Staff4.1

Timeliness3.9

Cleanliness4.1

Wifi2.7

Flixbus is a European bus operator that offers intercity and bus travel in over 38 countries. Known for their easy-to-spot lime green buses and for offering affordable transportation between cities in Europe and the Americas, Flixbus is a good option for those looking for an affordable, reliable bus company. In their buses, you'll find free WiFi, bathrooms, and power outlets. You can also pay extra to choose your seat and get extra legroom, or even buy a snack or drink onboard directly from the driver. You can reschedule your ticket for a small fee, which varies from $1 to $5, depending on how close you are to the departure date.

GB bus companies:FlixBus, Greyhound, BlaBlaCar Bus, ALSA, Intercape, Trenitalia, Big Sky

Frequently asked questions about traveling from Cardiff to Southampton by bus

Please note that schedules, routes, or operator details shown here may be updated or vary at the time of your trip.

How much is the bus ticket from Cardiff to Southampton?
The cheapest bus tickets from Cardiff to Southampton start from $19. The average price for this route is around $23. Busbud recommends that you book your tickets in advance for a better chance to get the lowest possible price.
How long is the bus ride from Cardiff to Southampton?
The average bus trip duration from Cardiff to Southampton is 7h 10m, covering a distance of 87 miles (141 km). The quickest bus can get you there in 6h 20m and is operated by FlixBus.
Which bus companies service the Cardiff to Southampton route?
Several major bus companies operate on this route with 21 buses available per day, including services from National Express, FlixBus.
What is the earliest and latest departure time for the bus from Cardiff to Southampton?
The earliest bus departs from Cardiff to Southampton at 3:10am. And the latest bus departs at 7:58pm.
What are the CO₂ emissions for the bus trip from Cardiff to Southampton?
A bus trip from Cardiff to Southampton generates an estimated 4 kg of CO₂, making it a highly eco-friendly travel option and recommended mode of travel by Busbud.
What is the best bus company from Cardiff to Southampton?
According to Busbud customers, the highest-rated bus company on this route is National Express, with an average rating of 4.2 out of 5 stars based on 29872 reviews.
Which bus company has the best Wi-Fi from Cardiff to Southampton?
Based on reviews on Busbud, the bus company National Express has the best Wi-Fi rating with a score of 3.4.
Which bus company has the most timely service from Cardiff to Southampton?
According to Busbud traveler reviews, the most timely bus company on this route is National Express, with a punctuality rating of 4.1 out of 5 stars.
Which bus company has the cleanest buses from Cardiff to Southampton?
According to Busbud traveler reviews, the bus company with the cleanest buses on this route is National Express, with a cleanliness rating of 4.7 out of 5 stars.

Find cheapest prices for buses

Price is for a one-way ticket for one passenger and based on past searches.

Best price found

02/19

$17

02/20

$29

Today

$17

02/22

No data

02/23

$17

02/24

$18

02/25

$17

02/26

$17

The cheapest trip from Cardiff to Southampton was searched and found on Feb 21, 2026 with a price of $17

To save money and be sure you have the best seat, it's a good idea to buy your bus tickets from Cardiff to Southampton, as early as possible.

You can expect to pay from $17 to $70 for a bus ticket from Cardiff to Southampton based on the last 2 days. You can expect to find the cheapest price for the trip at $17 which is on 2026-02-23.