$790 Cheap Flights from Reykjavik (KEF) to Sydney (SYD)

View $790 flight on Tue, May 20, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Reykjavik to Sydney (KEF-SYD)

Prices were available within the past 7 days and start at $790 for one-way flights and $1,255 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Thu, May 15 - Wed, May 28
KEF
Reykjavik
SYD
Sydney
$1,255 Roundtrip, found 1 day ago
$1,255
Roundtrip
found 1 day ago
Select British Airways flight, departing Thu, May 15 from Reykjavik to Sydney, returning Wed, May 28, priced at $1,255 found 1 day ago
British Airways
Thu, May 15 - Wed, May 28
KEF
Reykjavik
SYD
Sydney
$1,323 Roundtrip, found 1 day ago
$1,323
Roundtrip
found 1 day ago
Select British Airways flight, departing Thu, May 15 from Reykjavik to Sydney, returning Wed, May 28, priced at $1,323 found 1 day ago
British Airways
Wed, May 7 - Thu, May 15
KEF
Reykjavik
SYD
Sydney
$1,457 Roundtrip, found 1 day ago
$1,457
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, May 7 from Reykjavik to Sydney, returning Thu, May 15, priced at $1,457 found 1 day ago
British Airways
Thu, May 15 - Wed, May 28
KEF
Reykjavik
SYD
Sydney
$1,460 Roundtrip, found 1 day ago
$1,460
Roundtrip
found 1 day ago
Select British Airways flight, departing Thu, May 15 from Reykjavik to Sydney, returning Wed, May 28, priced at $1,460 found 1 day ago
British Airways
Fri, May 16 - Wed, May 28
KEF
Reykjavik
SYD
Sydney
$1,478 Roundtrip, found 1 day ago
$1,478
Roundtrip
found 1 day ago
Select British Airways flight, departing Fri, May 16 from Reykjavik to Sydney, returning Wed, May 28, priced at $1,478 found 1 day ago
British Airways
Wed, May 7 - Wed, May 14
KEF
Reykjavik
SYD
Sydney
$1,487 Roundtrip, found 1 day ago
$1,487
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, May 7 from Reykjavik to Sydney, returning Wed, May 14, priced at $1,487 found 1 day ago
Air Canada
Mon, Jun 9 - Mon, Jun 16
KEF
Reykjavik
SYD
Sydney
$1,572 Roundtrip, found 3 hours ago
$1,572
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Mon, Jun 9 from Reykjavik to Sydney, returning Mon, Jun 16, priced at $1,572 found 3 hours ago
Icelandair
Thu, May 15 - Wed, May 28
KEF
Reykjavik
SYD
Sydney
$1,703 Roundtrip, found 1 day ago
$1,703
Roundtrip
found 1 day ago
Select Icelandair flight, departing Thu, May 15 from Reykjavik to Sydney, returning Wed, May 28, priced at $1,703 found 1 day ago
Finnair
Wed, May 7 - Wed, May 14
KEF
Reykjavik
SYD
Sydney
$1,743 Roundtrip, found 1 day ago
$1,743
Roundtrip
found 1 day ago
Select Finnair flight, departing Wed, May 7 from Reykjavik to Sydney, returning Wed, May 14, priced at $1,743 found 1 day ago
Swiss International Air Lines
Thu, May 15 - Wed, May 28
KEF
Reykjavik
SYD
Sydney
$1,750 Roundtrip, found 1 day ago
$1,750
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Thu, May 15 from Reykjavik to Sydney, returning Wed, May 28, priced at $1,750 found 1 day ago
Flights from Reykjavik (KEF) to Sydney (SYD)
Origin airport
Keflavik Intl.
Destination airport
Kingsford Smith Intl.
Roundtrip price
$1,255
Distance
10342 mi

Reykjavik to Sydney Flights

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

The best time to book a flight from Reykjavik to Sydney

Sunday is one of the best days to book for cheap flights from Reykjavik 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 Reykjavik 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 Reykjavik to Sydney in 2025. You can also book with separate airlines for your outbound and return journeys, from $790 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 Reykjavik 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 Reykjavik 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 Keflavik Intl. Airport (KEF) to Kingsford Smith Intl. Airport (SYD) cost?
Discover the latest flight deals from KEF 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 KEF to SYD?
The cheapest flights from KEF 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 KEF to SYD?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from KEF to SYD. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Keflavik Intl. Airport (KEF) to Kingsford Smith Intl. Airport (SYD)?
Nonstop flights from Keflavik Intl. Airport (KEF) to Kingsford Smith Intl. Airport (SYD) 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 select either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from KEF to SYD?
You’ll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Keflavik Intl. Airport (KEF) to Kingsford Smith Intl. Airport (SYD)?
To avoid potential delays on the Keflavik Intl. Airport (KEF) to Kingsford Smith Intl. Airport (SYD) route, aim to travel 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 Keflavik Intl. Airport (KEF) to Kingsford Smith Intl. Airport (SYD) last-minute?
Holding off until just before your departure to book your flight from KEF to SYD generally means paying more. While you may find some last-minute offers, they’re not always guaranteed. Keep your travel plans flexible for a better chance of scoring a bargain.
Is it cheaper to book a KEF to SYD flight and hotel package?
Compared with arranging hotels and flights separately, booking a KEF to SYD flight and hotel package with Expedia could lead to significant savings. What’s more, having everything in one convenient place will take the hassle out of travel planning. Just pick your flights and choose from our extensive range of hotels, then personalize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Keflavik Intl. Airport (KEF) to Kingsford Smith Intl. Airport (SYD)?
If you booked your KEF to SYD flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket 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, go to our Customer Service portal if you want more information.

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*Available to One Key members.