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

Popular airlines from Cardiff International Airport (CWL) to Southampton (SOU)

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Frequently asked questions

How much does a flight from Cardiff Intl. Airport (CWL) to Southampton Airport (SOU) cost?
Secure a cheap one-way flight or cheap return flight from Cardiff Intl. Airport (CWL) to Southampton Airport (SOU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Cardiff Intl. Airport (CWL) to Southampton Airport (SOU)?
Planning your trip for can help you save, as it's the cheapest month for flights between CWL and SOU. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Cardiff Intl. Airport (CWL) to Southampton Airport (SOU)?
To find the cheapest airline that'll fly you from CWL to SOU, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Cardiff Intl. Airport (CWL) to Southampton Airport (SOU)?
Direct flights from Cardiff Intl. Airport (CWL) to Southampton Airport (SOU) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CWL to SOU?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change based on various factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Cardiff Intl. Airport (CWL) to Southampton Airport (SOU)?
To avoid possible delays on the Cardiff Intl. Airport (CWL) to Southampton Airport (SOU) route, aim to fly before 3 PM. Later flights are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Cardiff Intl. Airport (CWL) to Southampton Airport (SOU) last-minute?
Waiting until just before your departure to book a ticket from CWL to SOU often results in higher prices. Although you may find some last-minute offers, they aren't always guaranteed. Keep your travel schedule open to boost your chances of landing a bargain.
Is it cheaper to book a CWL to SOU flight and hotel package?
Booking a CWL to SOU flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Select from our extensive range of accommodations and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Cardiff Intl. Airport (CWL) to Southampton Airport (SOU)?
If you booked your CWL to SOU flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

Travel information

Origin airport
Cardiff Intl.
Destination airport
Southampton
Distance
91 mi

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Cardiff to Southampton Flights

The cheapest times to fly from Cardiff to Southampton

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Cardiff to Southampton are during the month of . You can find some of the cheapest flights from Cardiff to Southampton with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Cardiff to Southampton

Sunday is one of the best days to book for cheap flights from Cardiff to Southampton: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Cardiff to Southampton

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Cardiff to Southampton in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Cardiff to Southampton flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Cardiff to Southampton airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Cardiff to Southampton Flights

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*Available to One Key members.