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Cheap flights from London Heathrow Airport to Sydney from $517

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Sydney departing on 9/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from London Heathrow Airport to Sydney

Cheap round-trip flights

China Southern Logo
10:00 pm - 8:20 pmLHR-SYD
35h 20m1 stop
China Southern Logo
11:25 am - 6:15 pmSYD-LHR
41h 50m1 stop
$871China Southern
Find Deal
Tue, Nov 11 - Tue, Nov 18
China Southern Logo
9:30 pm - 8:20 pmLHR-SYD
35h 50m2 stops
China Southern Logo
11:25 am - 2:00 pmSYD-LHR
37h 35m2 stops
$888China Southern
Find Deal
Tue, Nov 11 - Tue, Nov 18
China Southern Logo
10:00 pm - 8:20 pmLHR-SYD
35h 20m1 stop
China Southern Logo
11:25 am - 2:00 pmSYD-LHR
37h 35m2 stops
$916China Southern
Find Deal
Tue, Nov 11 - Tue, Nov 18
China Eastern Logo
9:00 pm - 10:00 amLHR-SYD
26h 00m1 stop
China Eastern Logo
12:00 pm - 5:30 pmSYD-LHR
40h 30m1 stop
$941China Eastern
Find Deal
Sat, Nov 1 - Tue, Nov 18
Logo
9:30 am - 11:35 amLHR-SYD
41h 05m2 stops
Logo
8:45 pm - 7:00 amSYD-LHR
43h 15m2 stops
$1,006
Find Deal
Tue, Sep 2 - Tue, Sep 16
Air China Logo
8:25 pm - 3:30 pmLHR-SYD
32h 05m1 stop
Air China Logo
8:40 pm - 5:50 pmSYD-LHR
32h 10m1 stop
$1,023Air China
Find Deal
Tue, Nov 4 - Sat, Nov 22
Logo
5:40 pm - 3:30 pmLHR-SYD
34h 50m1 stop
Logo
8:20 pm - 3:25 pmSYD-LHR
30h 05m2 stops
$1,054
Find Deal
Thu, Nov 13 - Fri, Nov 21
Air India Logo
9:45 am - 6:00 pmLHR-SYD
23h 15m1 stop
Air India Logo
7:30 pm - 7:30 amSYD-LHR
45h 00m1 stop
$1,055Air India
Find Deal
Mon, Sep 1 - Tue, Sep 16
Air India Logo
9:45 am - 6:00 pmLHR-SYD
23h 15m1 stop
Air India Logo
7:30 pm - 11:30 amSYD-LHR
25h 00m1 stop
$1,058Air India
Find Deal
Tue, Sep 2 - Tue, Sep 9
China Eastern Logo
9:00 pm - 10:00 amLHR-SYD
26h 00m1 stop
China Eastern Logo
12:00 pm - 5:30 pmSYD-LHR
40h 30m1 stop
$1,110China Eastern
Find Deal
Mon, Nov 10 - Sat, Nov 22

China Eastern flights from London Heathrow Airport to Sydney

Our best China Eastern deals on London Heathrow Airport to Sydney flight tickets
China Eastern
Nov 1
LHR9:00 pmLondon Heathrow
26h 00m
1 stop
SYD10:00 amSydney Kingsford Smith
Nov 18
SYD12:00 pmSydney Kingsford Smith
40h 30m
1 stop
LHR5:30 pmLondon Heathrow
$941
Find similar
China Eastern
Nov 10
LHR9:00 pmLondon Heathrow
26h 00m
1 stop
SYD10:00 amSydney Kingsford Smith
Nov 22
SYD12:00 pmSydney Kingsford Smith
40h 30m
1 stop
LHR5:30 pmLondon Heathrow
$1,110
Find similar
China Eastern
Sep 2
LHR9:20 pmLondon Heathrow
50h 10m
2 stops
SYD8:30 amSydney Kingsford Smith
Sep 16
SYD11:00 amSydney Kingsford Smith
40h 40m
1 stop
LHR6:40 pmLondon Heathrow
$1,114
Find similar

Air China flights from London Heathrow Airport to Sydney

Our best Air China deals on London Heathrow Airport to Sydney flight tickets
Air China
Nov 4
LHR8:25 pmLondon Heathrow
32h 05m
1 stop
SYD3:30 pmSydney Kingsford Smith
Nov 22
SYD8:40 pmSydney Kingsford Smith
32h 10m
1 stop
LHR5:50 pmLondon Heathrow
$1,023
Find similar
Air China
Jul 23
LHR8:25 pmLondon Heathrow
33h 25m
1 stop
SYD2:50 pmSydney Kingsford Smith
Jul 30
SYD7:45 pmSydney Kingsford Smith
33h 45m
1 stop
LHR8:30 pmLondon Heathrow
$1,607
Find similar

See travel insights to Sydney from

How to get the cheapest flight ticket from London Heathrow Airport to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Sydney?

In general, March is the cheapest month to fly from London Heathrow Airport to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $972. If you are unable to visit Sydney during the month of March, then departing from London Heathrow Airport during the month May is also very affordable. Most momondo users find prices during this month for around $1,084.

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from London Heathrow Airport to Sydney is on a Sunday when prices can be found for as low as $1,197. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $1,490.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is in the afternoon. momondo users have found flights departing from London Heathrow Airport to Sydney in the afternoon for as low as $1,245. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the evening, with an average ticket price of $1,589. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest London Heathrow to Sydney Kingsford Smith flight route?

Fly from London Heathrow to Sydney Kingsford Smith for the best London Heathrow - Sydney Kingsford Smith flight prices

How far in advance should I book a flight to Sydney?

You are more likely to see cheaper flights to Sydney from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,329 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from London Heathrow Airport for as low as $1,089 on momondo.

What cabin class options are available on London Heathrow to Sydney Kingsford Smith flights?

There are 2 cabin classes available to choose from on London Heathrow to Sydney Kingsford Smith flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have London Heathrow Airport to Sydney flight prices changed over time?

As of July 2025, prices for London Heathrow Airport to Sydney flights are approximately 4% cheaper when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Heathrow Airport to Sydney (LHR to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Sydney

Best Price Found

$517

Fastest flight time

23h 15m

Direct flights

Wed, Thu, Fri, Sat and Sun

Airports in Sydney

1 airport
The best one-way flight to Sydney from London Heathrow Airport in the past 72 hours is $517. The best round-trip flight deal from London Heathrow Airport to Sydney found on momondo in the last 72 hours is $871.
The fastest flight from London Heathrow Airport to Sydney takes 23h 15m
Direct flights go from London Heathrow Airport to Sydney on Wednesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Qantas Airways.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)
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  • How far is London Heathrow to Sydney Kingsford Smith by plane?

    London Heathrow and Sydney Kingsford Smith are 10566.1 mi apart from one another. Flights usually cover this in 23h 15m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from London Heathrow Airport to Sydney Kingsford Smith Airport?

    Prices for flights from London Heathrow Airport to Sydney Kingsford Smith Airport refresh daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from London Heathrow Airport to Sydney Kingsford Smith Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London Heathrow Airport to Sydney?

  • What is the most popular airline from London Heathrow Airport to Sydney?

Best airlines flying from London Heathrow Airport to Sydney

Compare and see reviews for airlines that fly from London Heathrow Airport to Sydney with momondo
Airline
Rating
Free Cancellation
Price
Air ChinaPriceFrom $747Free CancellationRating
7.2
89 reviews
Search Air China flights
China SouthernPriceFrom $766Free CancellationRating
7.6
103 reviews
Search China Southern flights
China EasternPriceFrom $866Free CancellationRating
7.2
151 reviews
Search China Eastern flights
Etihad AirwaysPriceFrom $1,029Free CancellationRating
7.4
1,222 reviews
Search Etihad Airways flights
Cathay PacificPriceFrom $1,107Free CancellationRating
7.6
929 reviews
Search Cathay Pacific flights
Qantas AirwaysPriceFrom $1,120Free CancellationRating
7.5
876 reviews
Search Qantas Airways flights
Singapore AirlinesPriceFrom $1,181Free CancellationRating
8.1
1,324 reviews
Search Singapore Airlines flights
Malaysia AirlinesPriceFrom $1,188Free CancellationRating
7.4
266 reviews
Search Malaysia Airlines flights
British AirwaysPriceFrom $1,326Free CancellationRating
6.6
7,109 reviews
Search British Airways flights

  • Qantas Airways Flights From London Heathrow Airport to Sydney

    Across 7 Qantas Airways flights from London Heathrow Airport to Sydney this week, the average price was $1,438, with the best Qantas Airways deals starting from $1,120 round-trip. 873 users have rated Qantas Airways on momondo, with an average score of 7.5/10.

  • British Airways Flights From London Heathrow Airport to Sydney

    Across 7,109 British Airways reviews on momondo, the average score is 6.6/10. British Airways flies from London Heathrow Airport to Sydney about 7 times each week, with ticket deals ranging from $1,326 to $1,490. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Katoomba
Bondi Beach
Wollongong
Randwick
Cronulla
Manly
Coogee
Penrith
Charlestown
Lithgow
Swansea
Leura
Terrigal

Why use momondo?

Why should I use momondo to find a flight deal from London to Sydney?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Sydney from London.

Can I find flights from London to Sydney with flexible booking policies on momondo?

momondo does allow users to show only those flights to Sydney from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Sydney?

Once you have performed a search for London to Sydney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from London to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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