Cheap Flights from London (STN) to Cardiff (CWL)

Popular airlines from Stansted Airport (STN) to Cardiff International Airport (CWL)

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Find available prices by choosing your travel dates.
Flights from London (STN) to Cardiff (CWL)
Origin airport
Stansted
Destination airport
Cardiff Intl.
Distance
158 mi

London to Cardiff Flights

The cheapest times to fly from London to Cardiff

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 London to Cardiff are during the month of . You can find some of the cheapest flights from London to Cardiff with Expedia's search tool and vast selection of airlines.

The best time to book a flight from London to Cardiff

Sunday is one of the best days to book for cheap flights from London to Cardiff: 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 London to Cardiff

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 London to Cardiff 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 London to Cardiff 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 London to Cardiff 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.

Frequently asked questions

How much does a flight from Stansted Airport (STN) to Cardiff Intl. Airport (CWL) cost?
Discover the latest flight deals from STN to CWL by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from STN to CWL?
The cheapest flights from STN to CWL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from STN to CWL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from STN to CWL. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Stansted Airport (STN) to Cardiff Intl. Airport (CWL)?
Nonstop flights from Stansted Airport (STN) to Cardiff Intl. Airport (CWL) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and select either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from STN to CWL?
Typically you’ll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Stansted Airport (STN) to Cardiff Intl. Airport (CWL)?
To arrive at Cardiff Intl. Airport (CWL) on time, opt for a flight that leaves Stansted Airport (STN) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Stansted Airport (STN) to Cardiff Intl. Airport (CWL) last-minute?
Booking your ticket from STN to CWL shortly before your trip is usually more expensive. However, if there’s some wiggle room with your departure dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a STN to CWL flight and hotel package?
You can save money by securing a STN to CWL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it’s simple to manage everything in one place. Once you’ve chosen your preferred accommodations and flights, consider other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Stansted Airport (STN) to Cardiff Intl. Airport (CWL)?
Generally, it’s possible to cancel or reschedule your STN to CWL flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline’s policies in your itinerary to see what changes are allowed and whether any costs are involved. You’ll also find more details on our Customer Service portal.

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*Available to One Key members.