£414 Cheap Flights from London (LHR) to Sydney (SYD)

View £414 flight on Sun, 16 Nov 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at £414 for one-way flights and £552 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

China Southern Airlines
Wed, 29 Oct - Tue, 11 Nov
LHR
London
SYD
Sydney
£552 Return, found 1 hour ago
£552
Return
found 1 hour ago
Select China Southern Airlines flight, departing Wed, 29 Oct from London to Sydney, returning Tue, 11 Nov, priced at £552 found 1 hour ago
Air China
Tue, 7 Apr - Tue, 28 Apr
LHR
London
SYD
Sydney
£652 Return, found 1 hour ago
£652
Return
found 1 hour ago
Select Air China flight, departing Tue, 7 Apr from London to Sydney, returning Tue, 28 Apr, priced at £652 found 1 hour ago
China Eastern Airlines
Mon, 15 Sep - Sun, 19 Oct
LHR
London
SYD
Sydney
£659 Return, found 6 hours ago
£659
Return
found 6 hours ago
Select China Eastern Airlines flight, departing Mon, 15 Sep from London to Sydney, returning Sun, 19 Oct, priced at £659 found 6 hours ago
Vietnam Airlines
Tue, 5 May - Mon, 11 May
LHR
London
SYD
Sydney
£779 Return, found 1 hour ago
£779
Return
found 1 hour ago
Select Vietnam Airlines flight, departing Tue, 5 May from London to Sydney, returning Mon, 11 May, priced at £779 found 1 hour ago
Cathay Pacific
Sat, 8 Nov - Sun, 16 Nov
LHR
London
SYD
Sydney
£851 Return, just found
£851
Return
just found
Select Cathay Pacific flight, departing Sat, 8 Nov from London to Sydney, returning Sun, 16 Nov, priced at £851 just found
Malaysia Airlines
Sat, 8 Nov - Sun, 16 Nov
LHR
London
SYD
Sydney
£865 Return, just found
£865
Return
just found
Select Malaysia Airlines flight, departing Sat, 8 Nov from London to Sydney, returning Sun, 16 Nov, priced at £865 just found
China Airlines
Sat, 8 Nov - Sun, 16 Nov
LHR
London
SYD
Sydney
£868 Return, just found
£868
Return
just found
Select China Airlines flight, departing Sat, 8 Nov from London to Sydney, returning Sun, 16 Nov, priced at £868 just found
Air India
Thu, 2 Oct - Sun, 19 Oct
LHR
London
SYD
Sydney
£873 Return, found 3 days ago
£873
Return
found 3 days ago
Select Air India flight, departing Thu, 2 Oct from London to Sydney, returning Sun, 19 Oct, priced at £873 found 3 days ago
SriLankan Airlines
Sun, 28 Sep - Sun, 19 Oct
LHR
London
SYD
Sydney
£890 Return, found 4 hours ago
£890
Return
found 4 hours ago
Select SriLankan Airlines flight, departing Sun, 28 Sep from London to Sydney, returning Sun, 19 Oct, priced at £890 found 4 hours ago
Singapore Airlines
Wed, 5 Nov - Wed, 19 Nov
LHR
London
SYD
Sydney
£918 Return, just found
£918
Return
just found
Select Singapore Airlines flight, departing Wed, 5 Nov from London to Sydney, returning Wed, 19 Nov, priced at £918 just found

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

March is typically the cheapest month to fly

From £544 - £1,051 per traveller.

Graph displaying average flight prices per month

Flight from London to Sydney route information
Origin airport
Heathrow
Destination airport
Kingsford Smith Intl.
Airlines serving
Air Canada, Air China, Air France, Air India, Asiana Airlines, British Airways, Cathay Pacific, China Southern Airlines, Emirates, Etihad Airways, KLM, Korean Air, Malaysia Airlines, Qantas Airways, Qatar Airways, Singapore Airlines, Thai Airways International, Turkish Airlines, United, Vietnam Airlines
Return price
£551
Distance
16918 km
Average flight time
32 hours 10 mins

Compare flights from London to Sydney easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Sydney. Operating between them 3 flights per day, 20 airlines cover the route. And Qantas, Iberia, British Airways fly direct, getting you to Kingsford Smith Intl. in just 23hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to Kingsford Smith Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Heathrow (LHR) to Kingsford Smith Intl. (SYD)

The easiest way to view the best deals on flights from London to Sydney today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Heathrow to Kingsford Smith Intl. start at just £552 and range up to £918.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near London and Sydney
  • booking your flight during October, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your London to Sydney flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to Kingsford Smith Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from Heathrow Airport (LHR) to SYD?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight from London Heathrow to Sydney Airport was £552. Cheap tickets don't stick around for long, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Heathrow Airport to SYD?
This differs between air carriers, as each one has its own terms and conditions. Head to the Customer Service Portal, where you'll find easy instructions on how to cancel online.
How do I find cheap flights from Heathrow Airport to Kingsford Smith Intl. Airport (SYD) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for London Heathrow to SYD flights, you'll see a "no change fees" filter for you to select.
How far is the flight from LHR to Kingsford Smith Intl. Airport (SYD)?
Hounslow to Sydney is around 17,000 kilometres, so be prepared to spend quite a while in the air. Don't forget to pack all the essentials, from your hoodie to your headphones. Take a couple of snacks to munch on throughout your journey too.
Which airlines fly direct from Heathrow Airport (LHR) to SYD?
Unfortunately, there are no airlines that fly directly between London Heathrow and Kingsford Smith Intl. Airport (SYD). You'll have to book a flight with at least one stop.
Are LHR to Sydney Airport flight tickets cheaper when they're purchased at the last minute?
Flight prices change all the time, so there are no guarantees. While last-minute deals between Heathrow Airport and Sydney Airport are of course possible, it also makes sense to keep track of prices well before you fly. In fact, some carriers announce their prices up to 12 months before the departure date. Expedia is continuously updating the biggest airfare bargains around, so keep checking and be ready to pounce when the price dips.

Explore a world of travel with Expedia

London Airports

London

Gatwick to Sydney
£525.28
Stansted to Sydney
£990.76
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