Cheap Flights from Cardiff (CWL) to Southampton (SOU)

Compare Cardiff to Southampton flight deals

Find the cheapest month or even day of the year to fly to Southampton

Book the best Southampton fare with no extra fees

Flight deals from Cardiff to Southampton

Looking for a cheap last-minute deal or the best return flight from Cardiff to Southampton? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Cardiff to Southampton

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Cardiff to Southampton flights are currently cheapest in July.

Cardiff to Southampton: Alternative routes

Compare routes from Cardiff to Southampton below. You may find an airport to fly into that's cheaper, faster, or easier than Southampton.

Cardiff to Southampton: Flight information

The things to know before you go.
Cheapest flight found£90
Cheapest month to flyJuly

Finding cheap flights from Cardiff to Southampton: Frequently asked questions

The best price we found for a return flight from Cardiff to Southampton is £153. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Cardiff to Southampton. But we found flights with one or more stops from £153.
As of April 2026, there are no flights flying from Cardiff to Southampton.
The cheapest month to fly from Cardiff to Southampton is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Cardiff Airport to Southampton Airport on Wednesday, 22 April 2026.
No airlines currently offer direct flights between Cardiff Airport and Southampton Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Southampton but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Southampton is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Ryanair offers the cheapest flight tickets to Southampton.

Travelling from Cardiff Airport (CWL) to Southampton Airport (SOU): what you need to know

  • Southampton's timezone is UTC+0, which is the same as Cardiff.

  • Your CWL to SOU flight won't wait if you're running late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • Travelling during a peak month such as June? School holidays and other popular periods can mean longer lines and delays at airport checkpoints. Play it safe and get there up to four hours before an international flight and two hours before domestic departures.

  • Think about adding a stopover when booking your ticket from Cardiff Airport to Southampton Airport. Just deselect 'Direct flights only' to break up your journey, or maybe even explore a new city along the way. Here's where you can stop between CWL and SOU:

    • Dublin Airport

    • George Best Belfast City Airport

    • Amsterdam Airport Schiphol

How to find the cheapest flights from Cardiff Airport (CWL) to Southampton Airport (SOU)

  • The lowest price we've found for a one-way Cardiff Airport to Southampton Airport flight is £90. A round-trip fare is currently £153. Depending on the availability and when you book, these fares can change.

  • To get your hands on cheap tickets from CWL to SOU, book early. Airlines typically offer lower prices when flights are first released.

  • The 'Whole month' tool shows you the cheapest flights from Cardiff Airport to Southampton Airport across each month. It's a good way to find a bargain if your travel dates aren't set in stone.

  • Getting your hands on cheap flights from CWL to SOU is a cinch with Price Alerts. All you need to do is set up one of these automatic alerts and we'll let you know as soon as fares go down.

  • Secure the perfect flight for you by using the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Cardiff Airport to Southampton Airport, use the 'Sort by' tool. You can also filter by airline, arrival and departure times, and journey duration.

Handy information about Cardiff Airport (CWL)

  • When it comes to the on-time performance of Cardiff Airport, 66.16% of flights meet their scheduled arrival time.

  • Central Cardiff to Cardiff Airport is approximately 17 miles. Depending on traffic, it'll take about 30 minutes to get there if you're driving, ride-sharing or catching a cab.

  • The journey on public transport typically takes 1 hour 5 minutes.

  • Need a handy hotel close to CWL? If you've booked an early flight from Cardiff Airport to Southampton Airport, these stays will have you moments from your departure lounge:

Arriving at Southampton Airport (SOU)

  • If you're getting in on a late Cardiff Airport to Southampton Airport flight, nothing beats the convenience of staying near the terminal. Pick up your bags from the carousel and then be tucked up in bed soon after at one of these options near SOU:

  • Go wherever you want, whenever you want with a Southampton Airport rental car. Pick up your wheels from Alamo, Budget or Europcar and experience more of Southampton and beyond.

  • To get the best deal, book your ride from Southampton Airport about two weeks before travelling.

Getting from Southampton Airport (SOU) to central Southampton

  • From Southampton Airport, Southampton is approximately 5 miles away. It takes around 20 minutes to get to the centre driving.

  • Getting to the centre on public transport takes around 25 minutes.

When to fly to Southampton Airport (SOU)

  • August is the most popular month for flights from Cardiff Airport to Southampton Airport. To escape the crowds, go to Southampton in April.

  • Book your flight from Cardiff Airport to Southampton Airport for July if you want to visit Southampton during its warmest month. Expect temperatures of between 11ºC (52ºF) and 24ºC (75ºF).

  • Search for cheap tickets from CWL to SOU in January if you like cooler conditions. Temperatures are at their lowest around then, ranging between 0ºC (32ºF) and 9ºC (48ºF) on average.

Explore more of United Kingdom

  • You've seen Southampton, now it's time to discover other parts of United Kingdom. Travel around 70 miles north-east to London to tick off its leading sights. From Big Ben to The British Museum and Buckingham Palace, there's plenty to keep you on the go.

  • If you're eager to discover another side of United Kingdom, consider Birmingham, roughly 110 miles north of Southampton. Cadbury World, The Library of Birmingham and National Sea Life Centre are among the biggest draws.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.