$502 Cheap Flights from London (LHR) to Sydney (SYD)

View $502 flight on Sun, Dec 7, 2025Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Sydney Airport (SYD)

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Cheap Flights from London to Sydney (LHR-SYD)

Prices were available within the past 7 days and start at $502 for one-way flights and $676 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air China
Mon, Dec 1 - Mon, Jan 19
LHR
London
SYD
Sydney
$676 Roundtrip, found 2 hours ago
$676
Roundtrip
found 2 hours ago
Select Air China flight, departing Mon, Dec 1 from London to Sydney, returning Mon, Jan 19, priced at $676 found 2 hours ago
China Southern Airlines
Mon, Nov 17 - Fri, Jan 30
LHR
London
SYD
Sydney
$794 Roundtrip, found 5 days ago
$794
Roundtrip
found 5 days ago
Select China Southern Airlines flight, departing Mon, Nov 17 from London to Sydney, returning Fri, Jan 30, priced at $794 found 5 days ago
Hainan Airlines
Sun, Nov 9 - Sat, Nov 22
LHR
London
SYD
Sydney
$831 Roundtrip, found 1 day ago
$831
Roundtrip
found 1 day ago
Select Hainan Airlines flight, departing Sun, Nov 9 from London to Sydney, returning Sat, Nov 22, priced at $831 found 1 day ago
China Eastern Airlines
Wed, Nov 12 - Tue, Nov 18
LHR
London
SYD
Sydney
$897 Roundtrip, found 1 day ago
$897
Roundtrip
found 1 day ago
Select China Eastern Airlines flight, departing Wed, Nov 12 from London to Sydney, returning Tue, Nov 18, priced at $897 found 1 day ago
Etihad Airways
Mon, Nov 17 - Mon, Nov 24
LHR
London
SYD
Sydney
$1,123 Roundtrip, found 13 hours ago
$1,123
Roundtrip
found 13 hours ago
Select Etihad Airways flight, departing Mon, Nov 17 from London to Sydney, returning Mon, Nov 24, priced at $1,123 found 13 hours ago
Cathay Pacific
Mon, Feb 2 - Mon, Feb 16
LHR
London
SYD
Sydney
$1,146 Roundtrip, found 20 hours ago
$1,146
Roundtrip
found 20 hours ago
Select Cathay Pacific flight, departing Mon, Feb 2 from London to Sydney, returning Mon, Feb 16, priced at $1,146 found 20 hours ago
China Airlines
Mon, Nov 3 - Fri, Nov 7
LHR
London
SYD
Sydney
$1,157 Roundtrip, found 13 hours ago
$1,157
Roundtrip
found 13 hours ago
Select China Airlines flight, departing Mon, Nov 3 from London to Sydney, returning Fri, Nov 7, priced at $1,157 found 13 hours ago
Qatar Airways
Mon, Mar 9 - Tue, Mar 24
LHR
London
SYD
Sydney
$1,194 Roundtrip, found 14 hours ago
$1,194
Roundtrip
found 14 hours ago
Select Qatar Airways flight, departing Mon, Mar 9 from London to Sydney, returning Tue, Mar 24, priced at $1,194 found 14 hours ago
Air India
Mon, Mar 9 - Tue, Mar 24
LHR
London
SYD
Sydney
$1,199 Roundtrip, found 14 hours ago
$1,199
Roundtrip
found 14 hours ago
Select Air India flight, departing Mon, Mar 9 from London to Sydney, returning Tue, Mar 24, priced at $1,199 found 14 hours ago
SriLankan Airlines
Wed, Nov 5 - Tue, Nov 11
LHR
London
SYD
Sydney
$1,202 Roundtrip, found 10 hours ago
$1,202
Roundtrip
found 10 hours ago
Select SriLankan Airlines flight, departing Wed, Nov 5 from London to Sydney, returning Tue, Nov 11, priced at $1,202 found 10 hours ago

Find the cheapest month to fly from London (LHR) to Sydney (SYD)

March is typically the cheapest month to fly

From $727 - $1,297 per traveler.

Alternative airports near Sydney

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Kingsford Smith Intl. SYD. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $1,167
SYD
Kingsford Smith Intl.
Cheapest
Average driving time to city center16 min
Flights from $1,167

Frequently asked questions

How much does a flight from Heathrow Airport (LHR) to Kingsford Smith Intl. Airport (SYD) cost?
Get a cheap one-way flight from $502 or cheap return flight from $676 from Heathrow Airport (LHR) to Kingsford Smith Intl. Airport (SYD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Heathrow Airport (LHR) to Kingsford Smith Intl. Airport (SYD)?
Traveling in December may help you find better deals, as it's the cheapest month for flights between LHR and SYD. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Heathrow Airport (LHR) to Kingsford Smith Intl. Airport (SYD)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll fly you from LHR to SYD. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from Heathrow Airport (LHR) to Kingsford Smith Intl. Airport (SYD)?
There are no daily direct flights from Heathrow Airport (LHR) to Kingsford Smith Intl. Airport (SYD). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way in no time.
What day of the week has the most flights from LHR to SYD?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary based on a range of factors, such as the season and airline.*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 Kingsford Smith Intl. Airport (SYD)?
To avoid possible delays on the Heathrow Airport (LHR) to Kingsford Smith Intl. Airport (SYD) route, aim to travel before 3 PM. Later flights have a 22% higher chance of cancellation.**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 Kingsford Smith Intl. Airport (SYD) last-minute?
Last-minute fares from LHR to SYD are usually more expensive. To lock in the lowest prices, start looking for flights as early as possible. That being said, if you're flexible with your travel dates, it's possible to find a cheap fare right before your journey.
Is it cheaper to book a LHR to SYD flight and hotel package?
Opting for a LHR to SYD flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Pick from our wide range of accommodations and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Heathrow Airport (LHR) to Kingsford Smith Intl. Airport (SYD)?
In most instances, you can cancel or reschedule your LHR to SYD flight. However, additional charges may apply, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you need further information, visit our Customer Service portal.

Travel information

Origin airport
Heathrow
Destination airport
Kingsford Smith Intl.
Airlines serving
Air Canada, Air China, Air India, Asiana Airlines, British Airways, Cathay Pacific, China Airlines, China Southern Airlines, Emirates, Etihad Airways, Finnair, Malaysia Airlines, Oman Air, Qantas Airways, Qatar Airways, Singapore Airlines, SriLankan Airlines, Thai Airways International, Turkish Airlines, Vietnam Airlines
Roundtrip price
$675
Distance
10574 mi
Average flight time
34 hours 10 mins

Book with confidence

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 December. 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 $502 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.

 

London to Sydney Flights

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*Available to One Key members.