In terms of precipitation, rainfall in Cardiff ranges from 50.0 - 90.0 inches per month. January is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Cardiff when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Cardiff, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

What is the cheapest time of day to fly from SOU to CWL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Southampton to Cardiff as you normally would.

Can I find deals for flights from Southampton to Cardiff that include hotel bookings?

Yes. In addition to deals on Southampton to Cardiff flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Southampton to Cardiff?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southampton to Cardiff.

Can I find deals for business class flights from Southampton to Cardiff?

Yes. Cheapflights offers flight deals from Southampton to Cardiff by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£84+ Cheap Flights from Southampton to Cardiff

Cheap flight deals from Southampton to Cardiff

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Southampton to Cardiff
Explore the most affordable flight options available from Southampton to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Fri 2/1020:00 -

1 stop10h 55m

Tue 6/1023:15 -

1 stop8h 50m

Deal found 16/9£135

Thu 8/1011:40 -

2 stops19h 40m

Mon 12/1022:10 -

1 stop10h 30m

Deal found 16/9£149

Tue 29/909:15 -

1 stop13h 35m

Sat 3/1007:30 -

1 stop9h 20m

Deal found 14/9£158

Mon 28/919:20 -

2 stops19h 00m

Fri 2/1007:45 -

1 stop11h 45m

Deal found 13/9£162

Sat 10/1018:15 -

1 stop18h 30m

Sat 17/1012:00 -

1 stop4h 15m

Deal found 12/9£173

Find flight deals from Southampton to Cardiff

Round-trip from	£135
One-way from	£84
Popular in	March
Cheapest in	May
Average price	£261

2/10-6/10
2 total stops
19h 45m total
Southampton to Cardiff

Search Deals

10/10-31/12
1 total stop
18h 30m total
Southampton to Cardiff

Search Deals

Highest demand for flights based on searches. 42% potential increase in price (£106 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 12% potential price decrease (£17 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Southampton to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

SouthamptonCardiff

SOU Southampton Eastleigh - CWL Cardiff Wales

SOUCWL

Southampton Eastleigh

Sat 10/10

18:15-12:45

1 stop18h 30m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£84

SouthamptonCardiff

SOU Southampton Eastleigh - CWL Cardiff Wales

SOUCWL

Southampton Eastleigh

Sun 11/10

20:00-21:45

1 stop25h 45m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£108

SouthamptonCardiff

SOU Southampton Eastleigh - CWL Cardiff Wales

SOUCWL

Southampton Eastleigh

Thu 8/10

20:00-07:20

1 stop11h 20m

Cardiff Wales

Mon 12/10

22:10-08:40

1 stop10h 30m

£152

SouthamptonCardiff

SOU Southampton Eastleigh - CWL Cardiff Wales

SOUCWL

Southampton Eastleigh

Fri 2/10

20:00-06:55

1 stop10h 55m

Cardiff Wales

Tue 6/10

23:15-10:15

2 stops11h 00m

£152

SouthamptonCardiff

SOU Southampton Eastleigh - CWL Cardiff Wales

SOUCWL

Southampton Eastleigh

Tue 29/9

09:15-22:50

1 stop13h 35m

Cardiff Wales

Sat 3/10

07:30-16:50

1 stop9h 20m

£158

SouthamptonCardiff

SOU Southampton Eastleigh - CWL Cardiff Wales

SOUCWL

Southampton Eastleigh

Mon 28/9

19:20-14:20

2 stops19h 00m

Cardiff Wales

Fri 2/10

07:45-19:30

1 stop11h 45m

£162

SouthamptonCardiff

SOU Southampton Eastleigh - CWL Cardiff Wales

SOUCWL

Southampton Eastleigh

Sat 10/10

18:15-12:45

1 stop18h 30m

Cardiff Wales

Sat 17/10

12:00-16:15

1 stop4h 15m

£173

SouthamptonCardiff

SOU Southampton Eastleigh - CWL Cardiff Wales

SOUCWL

Southampton Eastleigh

Wed 14/10

19:30-11:30

1 stop16h 00m

Cardiff Wales

Wed 21/10

12:00-19:00

1 stop7h 00m

£267

SouthamptonCardiff

SOU Southampton Eastleigh - CWL Cardiff Wales

SOUCWL

Southampton Eastleigh

Tue 13/10

19:30-11:30

1 stop16h 00m

Cardiff Wales

Tue 20/10

12:00-19:00

1 stop7h 00m

£290

Flights are sorted by cheapest return flights first.

Deals found on 12/9

Sorted by cheapest first

Best time to book a flight from Southampton to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Southampton with our price prediction graph.

SOU-CWL

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Can I find deals for flights from Southampton to Cardiff that include hotel bookings?
Yes. In addition to deals on Southampton to Cardiff flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Southampton to Cardiff?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southampton to Cardiff.
Can I find deals for business class flights from Southampton to Cardiff?
Yes. Cheapflights offers flight deals from Southampton to Cardiff by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Bridgend

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Cheapflights makes it easy to find Southampton to Cardiff flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Southampton to Cardiff?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Cardiff from Southampton.

Can Cheapflights find flights from Southampton to Cardiff with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Southampton to Cardiff, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Southampton to Cardiff become cheaper?

Yes, Cheapflights offers price alerts on Southampton to Cardiff flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Southampton to Cardiff from £84

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Southampton to Cardiff

Cheapest flights from Southampton to CardiffExplore the most affordable flight options available from Southampton to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Explore the most affordable flight options available from Southampton to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Best flights from Southampton to CardiffDiscover carefully curated flight deals from Southampton to Cardiff that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Discover carefully curated flight deals from Southampton to Cardiff that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Last-minute flights from Southampton to CardiffDiscover last-minute flight deals from Southampton to Cardiff. Data last updated 17 September 2026 and is based on user searches.

Discover last-minute flight deals from Southampton to Cardiff. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Southampton to CardiffSearch for one-way flight options from Southampton to Cardiff. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Search for one-way flight options from Southampton to Cardiff. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Find flight deals from Southampton to Cardiff

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Southampton to Cardiff that are best for you.

Best time to book a flight from Southampton to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Southampton with our price prediction graph.

Related info for your journey

Can I find deals for flights from Southampton to Cardiff that include hotel bookings?

How can I find direct flights from Southampton to Cardiff?

Can I find deals for business class flights from Southampton to Cardiff?

Travelling to a place near Cardiff?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Southampton to Cardiff

See prices for flight routes from nearby airports that may be better suited for you.

Other flights to Cardiff

Explore flights to Cardiff departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 17 September 2026.

Complete your trip

Complete your trip to Cardiff by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Wales

Book a non-stop flight to one of these other cities located in Wales.

Search flights from Southampton to Cardiff by cabin class

Find flights from Southampton to Cardiff, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Southampton and Cardiff flights

Browse other Southampton and Cardiff flight options. Last updated on 17 September 2026.

Other flights from Southampton

Browse through other flights departing from Southampton. Flights are based on user searches made on Cheapflights and were last updated on 17 September 2026.

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How does Cheapflights help users find flights from Southampton to Cardiff?

Why should you use Cheapflights to find cheap flight tickets from Southampton to Cardiff?

Can Cheapflights find flights from Southampton to Cardiff with no change fees?

Can Cheapflights notify me if prices for flights from Southampton to Cardiff become cheaper?

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Cheapest flights from Southampton to Cardiff
Explore the most affordable flight options available from Southampton to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Best flights from Southampton to Cardiff
Discover carefully curated flight deals from Southampton to Cardiff that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Last-minute flights from Southampton to Cardiff
Discover last-minute flight deals from Southampton to Cardiff. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Southampton to Cardiff
Search for one-way flight options from Southampton to Cardiff. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.