How far is Cardiff from Southampton?

The distance between Cardiff and Southampton is around 140 km (87 miles).

What are the departure and arrival locations for buses traveling from Cardiff to Southampton?

Buses traveling this route start their trip at Cardiff University (o/s Cathays Rail Stn), in Cardiff, and end it at Southampton Coach Station, in Southampton.

Bus Cardiff to Southampton from $24 | Refundable Tickets

Next bus departures

Next departures for Cardiff to Southampton on November 17
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	6:45am	Cardiff North Road (Friary Gardens)	6h 40m	1:25pm	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: Yesterday at 8:01 PM GMT.

Compare 3 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 $49, it presents an excellent value for a comfortable ride.

5train per day

2h 36mAverage Duration

139 kmDistance

3kgCO₂ emissions

	Average Price	Average Duration	CO₂ emissions
Bus	Average Price$28 - $94	Average Duration7h	CO₂ emissions 3kg CO₂e
Train	Average Price$49 - $425	Average Duration2h 36m	CO₂ emissions 3kg CO₂e
Carpool	Average Price$21 - $21	Average Duration2h 40m	CO₂ emissions 6kg CO₂e

Compare bus companies

National Express

4/529,712 reviews

Staff4.7

Timeliness4

Cleanliness4.7

Wifi3.4

Based on 29712 reviews, the company was rated 4.2 stars on Busbud. Travellers 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 $39

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

3.5/511,343 reviews

Staff4.1

Timeliness3.9

Cleanliness4.1

Wifi2.7

GB Bus Companies: FlixBus, BlaBlaCar Bus, ALSA, Greyhound, Intercape, Trenitalia, Sindbad

Where are the popular stops in Cardiff and Southampton?

Stops in Cardiff

A - Cardiff University (o/s Cathays Rail Stn)

B - Sophia Gardens

C - Cardiff Coach Station - Sophia Gardens

D - Cardiff - Castle Street Bus Stop

E - National Museum

F - Cardiff Bus Stop - Westgate

Stops in Southampton

A - Southampton Coach Station

B - Southampton Bus Stop

C - W. Esplanade Bus Station - Southampton

D - Bus Stop Queensway

E - Southampton Central

F - Ferry Terminal

Frequently asked questions about travelling from Cardiff to Southampton by bus

How far is Cardiff from Southampton?
The distance between Cardiff and Southampton is around 140 km (87 miles).
What are the departure and arrival locations for buses traveling from Cardiff to Southampton?
Buses traveling this route start their trip at Cardiff University (o/s Cathays Rail Stn), in Cardiff, and end it at Southampton Coach Station, in Southampton.

Find cheapest prices for buses

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

Best price found

11-15

No data

11-16

$41

Today

$29

11-18

$26

11-19

$26

11-20

$25

11-21

$24

11-22

No data

The cheapest trip from Cardiff to Southampton was searched and found on Nov 21, 2025 with a price of $24

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 $24 to $95 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 $24 which is on 2025-11-21.

Usually National Express will charge you higher prices for tickets closer to the departure date. To find the best prices, you should be flexible on your date of travel.