$485 Cheap Flights from Sydney (SYD) to London (LHR)

View $485 flight on Tue, Jun 17, 2025Opens in a new window

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

Find available prices by choosing your travel dates.

Cheap Flights from Sydney to London (SYD-LHR)

Prices were available within the past 7 days and start at $485 for one-way flights and $928 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

China Eastern Airlines
Wed, Oct 15 - Mon, Nov 3
SYD
Sydney
LHR
London
$928 Roundtrip, found 1 day ago
$928
Roundtrip
found 1 day ago
Select China Eastern Airlines flight, departing Wed, Oct 15 from Sydney to London, returning Mon, Nov 3, priced at $928 found 1 day ago
Air China
Sun, May 25 - Tue, Jun 10
SYD
Sydney
LHR
London
$941 Roundtrip, found 3 days ago
$941
Roundtrip
found 3 days ago
Select Air China flight, departing Sun, May 25 from Sydney to London, returning Tue, Jun 10, priced at $941 found 3 days ago
China Southern Airlines
Thu, Oct 23 - Thu, Oct 30
SYD
Sydney
LHR
London
$969 Roundtrip, found 4 days ago
$969
Roundtrip
found 4 days ago
Select China Southern Airlines flight, departing Thu, Oct 23 from Sydney to London, returning Thu, Oct 30, priced at $969 found 4 days ago
Turkish Airlines
Thu, Oct 23 - Thu, Oct 30
SYD
Sydney
LHR
London
$1,013 Roundtrip, found 4 days ago
$1,013
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Thu, Oct 23 from Sydney to London, returning Thu, Oct 30, priced at $1,013 found 4 days ago
Cathay Pacific
Mon, Sep 8 - Thu, Nov 13
SYD
Sydney
LHR
London
$1,035 Roundtrip, found 6 days ago
$1,035
Roundtrip
found 6 days ago
Select Cathay Pacific flight, departing Mon, Sep 8 from Sydney to London, returning Thu, Nov 13, priced at $1,035 found 6 days ago
British Airways
Thu, May 8 - Thu, May 22
SYD
Sydney
LHR
London
$1,085 Roundtrip, found 2 days ago
$1,085
Roundtrip
found 2 days ago
Select British Airways flight, departing Thu, May 8 from Sydney to London, returning Thu, May 22, priced at $1,085 found 2 days ago
Japan Airlines
Tue, Jun 10 - Tue, Jun 24
SYD
Sydney
LHR
London
$1,110 Roundtrip, found 2 days ago
$1,110
Roundtrip
found 2 days ago
Select Japan Airlines flight, departing Tue, Jun 10 from Sydney to London, returning Tue, Jun 24, priced at $1,110 found 2 days ago
British Airways
Wed, May 14 - Fri, May 16
SYD
Sydney
LHR
London
$1,118 Roundtrip, found 6 hours ago
$1,118
Roundtrip
found 6 hours ago
Select British Airways flight, departing Wed, May 14 from Sydney to London, returning Fri, May 16, priced at $1,118 found 6 hours ago
Vietnam Airlines
Sat, Oct 25 - Sat, Nov 8
SYD
Sydney
LHR
London
$1,134 Roundtrip, found 3 hours ago
$1,134
Roundtrip
found 3 hours ago
Select Vietnam Airlines flight, departing Sat, Oct 25 from Sydney to London, returning Sat, Nov 8, priced at $1,134 found 3 hours ago
China Airlines
Sun, May 11 - Fri, May 16
SYD
Sydney
LHR
London
$1,164 Roundtrip, just found
$1,164
Roundtrip
just found
Select China Airlines flight, departing Sun, May 11 from Sydney to London, returning Fri, May 16, priced at $1,164 just found
Flights from Sydney (SYD) to London (LHR)
Origin airport
Kingsford Smith Intl.
Destination airport
Heathrow
Airlines serving
Air Canada, Air China, Air France, Air India, American Airlines, Asiana Airlines, British Airways, Cathay Pacific, China Southern Airlines, Emirates, Etihad Airways, Japan Airlines, KLM, Korean Air, Malaysia Airlines, Qantas Airways, Qatar Airways, Thai Airways International, Turkish Airlines, United
Roundtrip price
$927
Distance
10574 mi

Sydney to London Flights

The cheapest times to fly from Sydney to London

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

The best time to book a flight from Sydney to London

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

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 Sydney to London in 2025. You can also book with separate airlines for your outbound and return journeys, from $485 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 Sydney to London 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 Sydney to London 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 Kingsford Smith Intl. Airport (SYD) to Heathrow Airport (LHR) cost?
Discover the latest flight deals from SYD to LHR 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 SYD to LHR?
The cheapest flights from SYD to LHR 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 SYD to LHR?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from SYD to LHR. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Kingsford Smith Intl. Airport (SYD) to Heathrow Airport (LHR)?
You’ll need to book a flight with a layover when traveling from Kingsford Smith Intl. Airport (SYD) to Heathrow Airport (LHR). Direct flights don’t operate daily on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from SYD to LHR?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary based on a number of factors, such as the carrier 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 Kingsford Smith Intl. Airport (SYD) to Heathrow Airport (LHR)?
To avoid possible delays on the Kingsford Smith Intl. Airport (SYD) to Heathrow Airport (LHR) route, aim to travel before 3 PM. Departures after this time 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 Kingsford Smith Intl. Airport (SYD) to Heathrow Airport (LHR) last-minute?
Last-minute bookings from SYD to LHR are generally more expensive. To secure the best prices, start looking for flights ahead of time. That said, if you’re flexible with your travel dates, you may score a cheap fare right before you leave.
Is it cheaper to book a SYD to LHR flight and hotel package?
You can save money by securing a SYD to LHR flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it’s easy to manage everything in one place. After choosing your ideal flights and accommodations, consider adding extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from Kingsford Smith Intl. Airport (SYD) to Heathrow Airport (LHR)?
Generally, it’s possible to cancel or reschedule your SYD to LHR flight. However, if it’s been more than 24 hours since booking, 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 further details on our Customer Service portal.

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*Available to One Key members.