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Cheap flights from London Heathrow Airport to Sydney from $638

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 3/6. 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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Find the cheapest flights from London Heathrow Airport to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air China Logo
5:40 pm - 3:30 pm
LHR
-
SYD
34h 50m1 stop
Air China Logo
8:40 pm - 5:50 pm
SYD
-
LHR
32h 10m1 stop
$1,053Air China
mar., dic. 23 - mar., ene. 27
Air India Logo
1:00 pm - 7:15 pm
LHR
-
SYD
43h 15m1 stop
Air India Logo
8:45 pm - 7:20 pm
SYD
-
LHR
33h 35m1 stop
$1,063Air India
mar., feb. 17 - mar., feb. 24
Air India Logo
8:45 am - 7:15 pm
LHR
-
SYD
23h 30m1 stop
Air India Logo
8:45 pm - 8:30 pm
SYD
-
LHR
34h 45m1 stop
$1,064Air India
mar., feb. 17 - mar., feb. 24
China Southern Logo
10:00 pm - 1:35 pm
LHR
-
SYD
28h 35m1 stop
China Southern Logo
10:00 pm - 6:35 pm
SYD
-
LHR
31h 35m1 stop
$1,077China Southern
vie., dic. 26 - lun., feb. 2
China Eastern Logo
9:00 pm - 1:35 pm
LHR
-
SYD
29h 35m1 stop
China Eastern Logo
10:30 am - 5:30 pm
SYD
-
LHR
42h 00m1 stop
$1,080China Eastern
mié., dic. 24 - jue., feb. 5
Etihad Airways Logo
1:55 pm - 5:55 pm
LHR
-
SYD
41h 00m1 stop
Etihad Airways Logo
9:45 pm - 2:30 pm
SYD
-
LHR
27h 45m1 stop
$1,091Etihad Airways
sáb., feb. 7 - sáb., feb. 14
China Southern Logo
5:15 pm - 9:25 am
LHR
-
SYD
53h 10m2 stops
China Southern Logo
3:15 pm - 5:00 pm
SYD
-
LHR
36h 45m1 stop
$1,101China Southern
dom., ene. 25 - dom., feb. 1
China Eastern Logo
9:00 pm - 1:35 pm
LHR
-
SYD
29h 35m1 stop
China Eastern Logo
9:30 pm - 5:30 pm
SYD
-
LHR
31h 00m1 stop
$1,108China Eastern
dom., ene. 18 - dom., ene. 25
China Eastern Logo
9:00 pm - 11:00 am
LHR
-
SYD
51h 00m3 stops
China Eastern Logo
1:30 pm - 5:30 pm
SYD
-
LHR
39h 00m2 stops
$1,109China Eastern
lun., ene. 19 - jue., ene. 22
China Eastern Logo
9:00 pm - 11:00 am
LHR
-
SYD
51h 00m2 stops
China Eastern Logo
12:00 pm - 5:30 pm
SYD
-
LHR
40h 30m1 stop
$1,110China Eastern
lun., ene. 19 - vie., ene. 23

Austrian Airlines flights from London Heathrow Airport to Sydney

Our best Austrian Airlines deals on London Heathrow Airport to Sydney flight tickets
Austrian Airlines
May 6
LHR7:30 pmLondon Heathrow
29h 50m
2 stops
SYD10:20 amSydney Kingsford Smith
May 26
SYD2:50 pmSydney Kingsford Smith
26h 30m
2 stops
LHR8:20 amLondon Heathrow
$1,121
Find similar
Austrian Airlines
May 6
LHR7:30 pmLondon Heathrow
29h 50m
2 stops
SYD10:20 amSydney Kingsford Smith
May 28
SYD2:50 pmSydney Kingsford Smith
26h 30m
2 stops
LHR8:20 amLondon Heathrow
$1,177
Find similar
Austrian Airlines
Mar 3
LHR7:25 pmLondon Heathrow
29h 30m
2 stops
SYD11:55 amSydney Kingsford Smith
May 25
SYD2:50 pmSydney Kingsford Smith
29h 35m
2 stops
LHR11:25 amLondon Heathrow
$1,194
Find similar

Lufthansa flights from London Heathrow Airport to Sydney

Our best Lufthansa deals on London Heathrow Airport to Sydney flight tickets
Lufthansa
May 7
LHR5:30 pmLondon Heathrow
27h 40m
2 stops
SYD6:10 amSydney Kingsford Smith
May 26
SYD2:50 pmSydney Kingsford Smith
26h 25m
2 stops
LHR8:15 amLondon Heathrow
$1,142
Find similar
Lufthansa
May 29
LHR5:30 pmLondon Heathrow
27h 40m
2 stops
SYD6:10 amSydney Kingsford Smith
Jun 7
SYD2:05 pmSydney Kingsford Smith
27h 35m
2 stops
LHR8:40 amLondon Heathrow
$1,183
Find similar
Lufthansa
May 6
LHR5:30 pmLondon Heathrow
27h 40m
2 stops
SYD6:10 amSydney Kingsford Smith
May 27
SYD2:50 pmSydney Kingsford Smith
26h 25m
2 stops
LHR8:15 amLondon Heathrow
$1,198
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 diciembre 11, 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

mar. 12/23

5:40 pm-3:30 pm

1 stop34h 50m

Sydney Kingsford Smith

mar. 1/27

8:40 pm-5:50 pm

1 stop32h 10m

$1,053

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

mar. 2/17

1:00 pm-7:15 pm

1 stop43h 15m

Sydney Kingsford Smith

mar. 2/24

8:45 pm-7:20 pm

1 stop33h 35m

$1,063

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

mar. 2/17

8:45 am-7:15 pm

1 stop23h 30m

Sydney Kingsford Smith

mar. 2/24

8:45 pm-8:30 pm

1 stop34h 45m

$1,064

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

vie. 12/26

10:00 pm-1:35 pm

1 stop28h 35m

Sydney Kingsford Smith

lun. 2/2

10:00 pm-6:35 pm

1 stop31h 35m

$1,077

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

mié. 12/24

9:00 pm-1:35 pm

1 stop29h 35m

Sydney Kingsford Smith

jue. 2/5

10:30 am-5:30 pm

1 stop42h 00m

$1,080

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

sáb. 2/7

1:55 pm-5:55 pm

1 stop41h 00m

Sydney Kingsford Smith

sáb. 2/14

9:45 pm-2:30 pm

1 stop27h 45m

$1,091

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

dom. 1/25

5:15 pm-9:25 am

2 stops53h 10m

Sydney Kingsford Smith

dom. 2/1

3:15 pm-5:00 pm

1 stop36h 45m

$1,101

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

dom. 1/18

9:00 pm-1:35 pm

1 stop29h 35m

Sydney Kingsford Smith

dom. 1/25

9:30 pm-5:30 pm

1 stop31h 00m

$1,108

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

lun. 1/19

9:00 pm-11:00 am

3 stops51h 00m

Sydney Kingsford Smith

jue. 1/22

1:30 pm-5:30 pm

2 stops39h 00m

$1,109

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

lun. 1/19

9:00 pm-11:00 am

2 stops51h 00m

Sydney Kingsford Smith

vie. 1/23

12:00 pm-5:30 pm

1 stop40h 30m

$1,110

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, May 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 $1,058. If you are unable to visit Sydney during the month of May, then departing from London Heathrow Airport during the month March is also very affordable. Most momondo users find prices during this month for around $1,106.

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 $1,490. 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 $1,323 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 $1,095 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 December 2025, prices for London Heathrow Airport to Sydney flights are approximately 8% 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

Fastest flight time

23h 05m

Direct flights

Every day

Airports in Sydney

1 airport
The fastest flight from London Heathrow Airport to Sydney takes 23h 05m
Direct flights go from London Heathrow Airport to Sydney every day.
There is 1 airport in Sydney. From London Heathrow Airport there are direct flights to Sydney Kingsford Smith (SYD).
Search flight deals

  • 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 05m, 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
Etihad AirwaysPriceFrom $757Free CancellationRating
7.4
1,331 reviews
Search Etihad Airways flights
China SouthernPriceFrom $792Free CancellationRating
7.5
122 reviews
Search China Southern flights
Air IndiaPriceFrom $852Free CancellationRating
5.5
2,947 reviews
Search Air India flights
China EasternPriceFrom $866Free CancellationRating
7.2
178 reviews
Search China Eastern flights
Singapore AirlinesPriceFrom $1,015Free CancellationRating
8.1
1,412 reviews
Search Singapore Airlines flights
Cathay PacificPriceFrom $1,115Free CancellationRating
7.6
1,095 reviews
Search Cathay Pacific flights
EmiratesPriceFrom $1,121Free CancellationRating
8.1
3,434 reviews
Search Emirates flights
Qatar AirwaysPriceFrom $1,139Free CancellationRating
7.4
3,677 reviews
Search Qatar Airways flights
Malaysia AirlinesPriceFrom $1,188Free CancellationRating
7.3
282 reviews
Search Malaysia Airlines flights
British AirwaysPriceFrom $1,210Free CancellationRating
6.7
7,571 reviews
Search British Airways flights

  • British Airways Flights From London Heathrow Airport to Sydney

    Across 7 British Airways flights from London Heathrow Airport to Sydney this week, the average price was $1,490, with the best British Airways deals starting from $1,210 round-trip. 7,571 users have rated British Airways on momondo, with an average score of 6.7/10.

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
Manly
Penrith
Cronulla
Lithgow
Leura
Charlestown
Terrigal
Swansea

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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