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Cheap flights from London Heathrow Airport to Sydney from $585

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 11/18. 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 Eastern Logo
9:00 pm - 1:35 pmLHR-SYD
29h 35m1 stop
China Eastern Logo
12:00 pm - 5:30 pmSYD-LHR
40h 30m1 stop
$1,014China Eastern
Find Deal
Sat, Nov 8 - Sat, Nov 22
China Southern Logo
10:10 pm - 7:25 pmLHR-SYD
36h 15m1 stop
China Southern Logo
10:00 pm - 5:55 pmSYD-LHR
30h 55m2 stops
$1,025China Southern
Find Deal
Tue, Sep 9 - Mon, Nov 17
China Southern Logo
10:00 pm - 8:20 pmLHR-SYD
35h 20m1 stop
China Southern Logo
10:00 pm - 6:15 pmSYD-LHR
31h 15m1 stop
$1,035China Southern
Find Deal
Sat, Nov 15 - Fri, Dec 5
China Southern Logo
10:10 pm - 8:25 pmLHR-SYD
36h 15m1 stop
China Southern Logo
11:25 am - 6:15 pmSYD-LHR
41h 50m1 stop
$1,038China Southern
Find Deal
Mon, Oct 20 - Mon, Oct 27
China Southern Logo
9:30 pm - 8:20 pmLHR-SYD
35h 50m2 stops
China Southern Logo
3:15 pm - 6:15 pmSYD-LHR
38h 00m1 stop
$1,046China Southern
Find Deal
Thu, Nov 20 - Mon, Dec 15
Air China Logo
10:40 pm - 2:50 pmLHR-SYD
31h 10m1 stop
Air China Logo
7:40 pm - 5:45 pmSYD-LHR
31h 05m1 stop
$1,120Air China
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Sun, Sep 21 - Sun, Sep 28
Cathay Pacific Logo
8:15 pm - 12:00 pmLHR-SYD
28h 45m1 stop
Cathay Pacific Logo
3:15 pm - 6:20 amSYD-LHR
26h 05m1 stop
$1,139Cathay Pacific
Find Deal
Sat, Feb 21 - Wed, Mar 18
Cathay Pacific Logo
10:15 pm - 11:50 amLHR-SYD
27h 35m1 stop
Cathay Pacific Logo
10:20 pm - 3:00 pmSYD-LHR
27h 40m1 stop
$1,141Cathay Pacific
Find Deal
Mon, Oct 20 - Sat, Nov 8
China Eastern Logo
9:20 pm - 1:35 pmLHR-SYD
30h 15m1 stop
China Eastern Logo
12:00 pm - 5:30 pmSYD-LHR
40h 30m1 stop
$1,160China Eastern
Find Deal
Wed, Oct 15 - Mon, Dec 1
Malaysia Airlines Logo
10:25 am - 8:35 pmLHR-SYD
23h 10m1 stop
Malaysia Airlines Logo
10:15 pm - 3:25 pmSYD-LHR
28h 10m1 stop
$1,205Malaysia Airlines
Find Deal
Mon, Nov 10 - Sat, Nov 22

Cathay Pacific flights from London Heathrow Airport to Sydney

Our best Cathay Pacific deals on London Heathrow Airport to Sydney flight tickets
Cathay Pacific
Feb 21
LHR8:15 pmLondon Heathrow
28h 45m
1 stop
SYD12:00 pmSydney Kingsford Smith
Mar 18
SYD3:15 pmSydney Kingsford Smith
26h 05m
1 stop
LHR6:20 amLondon Heathrow
$1,139
Find similar
Cathay Pacific
Oct 20
LHR10:15 pmLondon Heathrow
27h 35m
1 stop
SYD11:50 amSydney Kingsford Smith
Nov 8
SYD10:20 pmSydney Kingsford Smith
27h 40m
1 stop
LHR3:00 pmLondon Heathrow
$1,141
Find similar
Cathay Pacific
Nov 8
LHR10:05 pmLondon Heathrow
24h 30m
1 stop
SYD9:35 amSydney Kingsford Smith
Nov 24
SYD10:20 pmSydney Kingsford Smith
27h 40m
1 stop
LHR3:00 pmLondon Heathrow
$1,142
Find similar

China Airlines flights from London Heathrow Airport to Sydney

Our best China Airlines deals on London Heathrow Airport to Sydney flight tickets
China Airlines
Jan 31
LHR9:15 pmLondon Heathrow
28h 00m
1 stop
SYD12:15 pmSydney Kingsford Smith
Feb 16
SYD10:10 pmSydney Kingsford Smith
29h 45m
1 stop
LHR4:55 pmLondon Heathrow
$1,162
Find similar
China Airlines
Feb 6
LHR9:15 pmLondon Heathrow
28h 00m
1 stop
SYD12:15 pmSydney Kingsford Smith
Mar 3
SYD10:10 pmSydney Kingsford Smith
29h 45m
1 stop
LHR4:55 pmLondon Heathrow
$1,168
Find similar
China Airlines
Feb 6
LHR9:15 pmLondon Heathrow
28h 00m
1 stop
SYD12:15 pmSydney Kingsford Smith
Mar 10
SYD10:10 pmSydney Kingsford Smith
29h 45m
1 stop
LHR4:55 pmLondon Heathrow
$1,172
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 26, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 11/8

9:00 pm-1:35 pm

1 stop29h 35m

Sydney Kingsford Smith

Sat 11/22

12:00 pm-5:30 pm

1 stop40h 30m

$1,014

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 9/9

10:10 pm-7:25 pm

1 stop36h 15m

Sydney Kingsford Smith

Mon 11/17

10:00 pm-5:55 pm

2 stops30h 55m

$1,025

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 11/15

10:00 pm-8:20 pm

1 stop35h 20m

Sydney Kingsford Smith

Fri 12/5

10:00 pm-6:15 pm

1 stop31h 15m

$1,035

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 10/20

10:10 pm-8:25 pm

1 stop36h 15m

Sydney Kingsford Smith

Mon 10/27

11:25 am-6:15 pm

1 stop41h 50m

$1,038

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 11/20

9:30 pm-8:20 pm

2 stops35h 50m

Sydney Kingsford Smith

Mon 12/15

3:15 pm-6:15 pm

1 stop38h 00m

$1,046

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 9/21

10:40 pm-2:50 pm

1 stop31h 10m

Sydney Kingsford Smith

Sun 9/28

7:40 pm-5:45 pm

1 stop31h 05m

$1,120

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 2/21

8:15 pm-12:00 pm

1 stop28h 45m

Sydney Kingsford Smith

Wed 3/18

3:15 pm-6:20 am

1 stop26h 05m

$1,139

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 10/20

10:15 pm-11:50 am

1 stop27h 35m

Sydney Kingsford Smith

Sat 11/8

10:20 pm-3:00 pm

1 stop27h 40m

$1,141

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 10/15

9:20 pm-1:35 pm

1 stop30h 15m

Sydney Kingsford Smith

Mon 12/1

12:00 pm-5:30 pm

1 stop40h 30m

$1,160

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 11/10

10:25 am-8:35 pm

1 stop23h 10m

Sydney Kingsford Smith

Sat 11/22

10:15 pm-3:25 pm

1 stop28h 10m

$1,205

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between London Heathrow Airport and Sydney?

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 $1,083.

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 Thursday, with ticket prices averaging around $1,333.

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 $1,326 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 $1,082 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 August 2025, prices for London Heathrow Airport to Sydney flights are approximately 3% more expensive 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

Direct flights

None
There are no direct flights from London Heathrow Airport to Sydney. There are no popular flight routes from London Heathrow Airport to Sydney.
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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 22h 50m, 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
7.3
95 reviews
Search Air China flights
China SouthernPriceFrom $766Free CancellationRating
7.5
109 reviews
Search China Southern flights
China EasternPriceFrom $866Free CancellationRating
7.2
162 reviews
Search China Eastern flights
Air IndiaPriceFrom $978Free CancellationRating
5.5
2,929 reviews
Search Air India flights
Etihad AirwaysPriceFrom $1,029Free CancellationRating
7.4
1,235 reviews
Search Etihad Airways flights
Cathay PacificPriceFrom $1,115Free CancellationRating
7.6
975 reviews
Search Cathay Pacific flights
Qantas AirwaysPriceFrom $1,120Free CancellationRating
7.5
904 reviews
Search Qantas Airways flights
EmiratesPriceFrom $1,121Free CancellationRating
8.1
3,318 reviews
Search Emirates flights
Malaysia AirlinesPriceFrom $1,188Free CancellationRating
7.3
278 reviews
Search Malaysia Airlines flights
Singapore AirlinesPriceFrom $1,279Free CancellationRating
8.1
1,352 reviews
Search Singapore Airlines 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 $1,408, with the best Qantas Airways deals starting from $1,120 round-trip. 904 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 7,309 British Airways reviews on momondo, the average score is 6.7/10. 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
Bondi Beach
Katoomba
Wollongong
Randwick
Coogee
Cronulla
Lithgow
Penrith
Manly
Leura
Charlestown
Swansea
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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