$947 Cheap Flights from London (LHR) to Sydney (YQY)

View $947 flight on Tue, Jun 17, 2025Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Sydney, NS (YQY)

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Find available prices by choosing your travel dates.

Cheap Flights from London to Sydney (LHR-YQY)

Prices were available within the past 7 days and start at $947 for one-way flights and $669 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Austrian Airlines
Thu, Jun 5 - Thu, Jun 12
LHR
London
YQY
Sydney
$669 Roundtrip, found 2 days ago
$669
Roundtrip
found 2 days ago
Select Austrian Airlines flight, departing Thu, Jun 5 from London to Sydney, returning Thu, Jun 12, priced at $669 found 2 days ago
Swiss International Air Lines
Thu, Jun 5 - Thu, Jun 12
LHR
London
YQY
Sydney
$673 Roundtrip, found 2 days ago
$673
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Thu, Jun 5 from London to Sydney, returning Thu, Jun 12, priced at $673 found 2 days ago
Brussels Airlines
Thu, Jun 5 - Thu, Jun 12
LHR
London
YQY
Sydney
$674 Roundtrip, found 2 days ago
$674
Roundtrip
found 2 days ago
Select Brussels Airlines flight, departing Thu, Jun 5 from London to Sydney, returning Thu, Jun 12, priced at $674 found 2 days ago
Swiss International Air Lines
Wed, May 7 - Sat, Jun 28
LHR
London
YQY
Sydney
$675 Roundtrip, found 1 day ago
$675
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Wed, May 7 from London to Sydney, returning Sat, Jun 28, priced at $675 found 1 day ago
Austrian Airlines
Thu, Jun 5 - Thu, Jun 12
LHR
London
YQY
Sydney
$676 Roundtrip, found 2 days ago
$676
Roundtrip
found 2 days ago
Select Austrian Airlines flight, departing Thu, Jun 5 from London to Sydney, returning Thu, Jun 12, priced at $676 found 2 days ago
Austrian Airlines
Wed, May 7 - Sat, Jun 28
LHR
London
YQY
Sydney
$678 Roundtrip, found 1 day ago
$678
Roundtrip
found 1 day ago
Select Austrian Airlines flight, departing Wed, May 7 from London to Sydney, returning Sat, Jun 28, priced at $678 found 1 day ago
Swiss International Air Lines
Thu, Jun 5 - Thu, Jun 12
LHR
London
YQY
Sydney
$680 Roundtrip, found 2 days ago
$680
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Thu, Jun 5 from London to Sydney, returning Thu, Jun 12, priced at $680 found 2 days ago
Brussels Airlines
Thu, Jun 5 - Thu, Jun 12
LHR
London
YQY
Sydney
$680 Roundtrip, found 2 days ago
$680
Roundtrip
found 2 days ago
Select Brussels Airlines flight, departing Thu, Jun 5 from London to Sydney, returning Thu, Jun 12, priced at $680 found 2 days ago
Swiss International Air Lines
Wed, May 7 - Sat, Jun 28
LHR
London
YQY
Sydney
$681 Roundtrip, found 1 day ago
$681
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Wed, May 7 from London to Sydney, returning Sat, Jun 28, priced at $681 found 1 day ago
Air Canada
Thu, Jun 5 - Thu, Jun 12
LHR
London
YQY
Sydney
$683 Roundtrip, found 2 days ago
$683
Roundtrip
found 2 days ago
Select Air Canada flight, departing Thu, Jun 5 from London to Sydney, returning Thu, Jun 12, priced at $683 found 2 days ago
Flights from London (LHR) to Sydney (YQY)
Origin airport
Heathrow
Destination airport
Sydney
Airlines serving
Air Canada
Roundtrip price
$669
Distance
2659 mi

London to Sydney Flights

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

The best time to book a flight from London to Sydney

Sunday is one of the best days to book for cheap flights from London 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 London 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 London to Sydney in 2025. You can also book with separate airlines for your outbound and return journeys, from $947 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 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 London 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 Heathrow Airport (LHR) to Sydney Airport (YQY) cost?
Discover the latest flight deals from LHR to YQY 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 LHR to YQY?
The cheapest flights from LHR to YQY 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 LHR to YQY?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from LHR to YQY. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Heathrow Airport (LHR) to Sydney Airport (YQY)?
There are no daily nonstop flights available from Heathrow Airport (LHR) to Sydney Airport (YQY). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you’ll be on your way in no time at all.
What day of the week has the most flights from LHR to YQY?
Usually you’ll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the airline, time of year 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 Heathrow Airport (LHR) to Sydney Airport (YQY)?
To avoid potential delays on the Heathrow Airport (LHR) to Sydney Airport (YQY) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of being 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 Heathrow Airport (LHR) to Sydney Airport (YQY) last-minute?
Booking your ticket from LHR to YQY right before your trip is generally more expensive. However, if there’s some wiggle room with your schedule, you could score a cheap last-minute fare.
Is it cheaper to book a LHR to YQY flight and hotel package?
You’ll generally save money by securing a LHR to YQY flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one place. After selecting your preferred flights and accommodations, consider adding extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Heathrow Airport (LHR) to Sydney Airport (YQY)?
If you booked your LHR to YQY flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

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*Available to One Key members.