$1,016 Cheap Flights from Cardiff (CWL) to Sydney (SYD)

View $1,016 flight on Tue, Mar 10, 2026Opens in a new window

Popular airlines from Cardiff International Airport (CWL) to Sydney Airport (SYD)

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Cheap Flights from Cardiff to Sydney (CWL-SYD)

Prices were available within the past 7 days and start at $1,016 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Cardiff (CWL) to Sydney (SYD)
Origin airport
Cardiff Intl.
Destination airport
Kingsford Smith Intl.
Distance
10682 mi

Cardiff to Sydney Flights

The cheapest times to fly from Cardiff to Sydney

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

 

The best time to book a flight from Cardiff to Sydney

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

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 Sydney in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,016 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 Sydney 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 Sydney 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 Cardiff Intl. Airport (CWL) to Kingsford Smith Intl. Airport (SYD) cost?
Discover the latest flight deals from CWL to SYD 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 CWL to SYD?
The cheapest flights from CWL to SYD 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 CWL to SYD?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from CWL to SYD. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Cardiff Intl. Airport (CWL) to Kingsford Smith Intl. Airport (SYD)?
Direct flights from Cardiff Intl. Airport (CWL) to Kingsford Smith Intl. Airport (SYD) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CWL to SYD?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on a number of factors, including 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 Kingsford Smith Intl. Airport (SYD)?
Select a flight from Cardiff Intl. Airport (CWL) to Kingsford Smith Intl. Airport (SYD) that leaves before 3 PM to reduce the risk of cancellations. Later departures have a 22% higher chance of being canceled, on average.**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 Kingsford Smith Intl. Airport (SYD) last-minute?
Waiting until just before your trip to book a ticket from CWL to SYD often results in higher prices. While you may find some last-minute discounts, they're not always guaranteed. Be flexible with your travel plans for a better chance of snagging a bargain.
Is it cheaper to book a CWL to SYD flight and hotel package?
Compared with arranging hotels and flights separately, booking a CWL to SYD flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one easy place takes the hassle out of planning your trip. Just pick your flights and select from our extensive range of stays, then personalize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Cardiff Intl. Airport (CWL) to Kingsford Smith Intl. Airport (SYD)?
In most cases, you can modify or cancel your CWL to SYD flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you want more details, visit our Customer Service portal.

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