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Cheap flights from London Heathrow Airport to Sydney from £379

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 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from London Heathrow Airport to Sydney

Cheap return flights

China Southern Logo
21:30 - 07:30LHR-SYD
47h 00m2 stops
China Southern Logo
09:20 - 17:55SYD-LHR
43h 35m2 stops
£528China Southern
Find Deal
Mon, 27 Oct - Thu, 13 Nov
China Southern Logo
21:30 - 07:30LHR-SYD
47h 00m2 stops
China Southern Logo
09:20 - 14:00SYD-LHR
63h 40m2 stops
£529China Southern
Find Deal
Mon, 27 Oct - Mon, 10 Nov
China Southern Logo
21:30 - 20:20LHR-SYD
35h 50m2 stops
China Southern Logo
09:20 - 17:55SYD-LHR
43h 35m2 stops
£532China Southern
Find Deal
Tue, 28 Oct - Thu, 13 Nov
China Southern Logo
22:00 - 09:25LHR-SYD
24h 25m1 stop
China Southern Logo
22:00 - 17:55SYD-LHR
30h 55m2 stops
£535China Southern
Find Deal
Wed, 5 Nov - Mon, 10 Nov
China Southern Logo
17:15 - 09:25LHR-SYD
29h 10m2 stops
China Southern Logo
22:00 - 17:55SYD-LHR
30h 55m2 stops
£535China Southern
Find Deal
Wed, 5 Nov - Mon, 10 Nov
China Southern Logo
21:30 - 20:20LHR-SYD
35h 50m2 stops
China Southern Logo
11:25 - 18:15SYD-LHR
41h 50m1 stop
£550China Southern
Find Deal
Tue, 28 Oct - Tue, 11 Nov
China Southern Logo
21:30 - 09:25LHR-SYD
48h 55m2 stops
China Southern Logo
11:25 - 18:15SYD-LHR
41h 50m1 stop
£551China Southern
Find Deal
Mon, 27 Oct - Mon, 10 Nov
China Eastern Logo
21:20 - 07:40LHR-SYD
49h 20m3 stops
China Eastern Logo
12:00 - 18:40SYD-LHR
40h 40m1 stop
£553China Eastern
Find Deal
Mon, 22 Sep - Mon, 13 Oct
China Eastern Logo
21:00 - 11:00LHR-SYD
75h 00m3 stops
China Eastern Logo
13:30 - 17:30SYD-LHR
39h 00m3 stops
£592China Eastern
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Tue, 4 Nov - Mon, 17 Nov
Air China Logo
20:25 - 15:30LHR-SYD
32h 05m1 stop
Air China Logo
20:40 - 15:55SYD-LHR
30h 15m1 stop
£613Air China
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Sun, 30 Nov - Tue, 3 Feb

China Southern flights from London Heathrow Airport to Sydney

Our best China Southern deals on London Heathrow Airport to Sydney flight tickets
China Southern
27 Oct
LHR21:30London Heathrow
47h 00m
2 stops
SYD07:30Sydney Kingsford Smith
13 Nov
SYD09:20Sydney Kingsford Smith
43h 35m
2 stops
LHR17:55London Heathrow
£528
Find similar
China Southern
27 Oct
LHR21:30London Heathrow
47h 00m
2 stops
SYD07:30Sydney Kingsford Smith
10 Nov
SYD09:20Sydney Kingsford Smith
63h 40m
2 stops
LHR14:00London Heathrow
£529
Find similar
China Southern
28 Oct
LHR21:30London Heathrow
35h 50m
2 stops
SYD20:20Sydney Kingsford Smith
13 Nov
SYD09:20Sydney Kingsford Smith
43h 35m
2 stops
LHR17:55London Heathrow
£532
Find similar

China Eastern flights from London Heathrow Airport to Sydney

Our best China Eastern deals on London Heathrow Airport to Sydney flight tickets
China Eastern
22 Sept
LHR21:20London Heathrow
49h 20m
3 stops
SYD07:40Sydney Kingsford Smith
13 Oct
SYD12:00Sydney Kingsford Smith
40h 40m
1 stop
LHR18:40London Heathrow
£553
Find similar
China Eastern
4 Nov
LHR21:00London Heathrow
75h 00m
3 stops
SYD11:00Sydney Kingsford Smith
17 Nov
SYD13:30Sydney Kingsford Smith
39h 00m
3 stops
LHR17:30London Heathrow
£592
Find similar
China Eastern
6 Aug
LHR21:20London Heathrow
30h 15m
1 stop
SYD12:35Sydney Kingsford Smith
13 Aug
SYD11:00Sydney Kingsford Smith
40h 40m
1 stop
LHR18:40London Heathrow
£810
Find similar

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 31 July 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

Mon 27/10

21:30-07:30

2 stops47h 00m

Sydney Kingsford Smith

Thu 13/11

09:20-17:55

2 stops43h 35m

£528

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 27/10

21:30-07:30

2 stops47h 00m

Sydney Kingsford Smith

Mon 10/11

09:20-14:00

2 stops63h 40m

£529

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 28/10

21:30-20:20

2 stops35h 50m

Sydney Kingsford Smith

Thu 13/11

09:20-17:55

2 stops43h 35m

£532

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 5/11

22:00-09:25

1 stop24h 25m

Sydney Kingsford Smith

Mon 10/11

22:00-17:55

2 stops30h 55m

£535

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 5/11

17:15-09:25

2 stops29h 10m

Sydney Kingsford Smith

Mon 10/11

22:00-17:55

2 stops30h 55m

£535

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 28/10

21:30-20:20

2 stops35h 50m

Sydney Kingsford Smith

Tue 11/11

11:25-18:15

1 stop41h 50m

£550

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 27/10

21:30-09:25

2 stops48h 55m

Sydney Kingsford Smith

Mon 10/11

11:25-18:15

1 stop41h 50m

£551

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 22/9

21:20-07:40

3 stops49h 20m

Sydney Kingsford Smith

Mon 13/10

12:00-18:40

1 stop40h 40m

£553

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 4/11

21:00-11:00

3 stops75h 00m

Sydney Kingsford Smith

Mon 17/11

13:30-17:30

3 stops39h 00m

£592

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 30/11

20:25-15:30

1 stop32h 05m

Sydney Kingsford Smith

Tue 3/2

20:40-15:55

1 stop30h 15m

£613

Flights are sorted by cheapest return 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 £731. If you don’t want to visit Sydney in March, then you should wait until May to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £813.

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

The cheapest day to depart on your flight to Sydney is on a Monday when prices can be found for as low as £1,135. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £1,314.

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 £919. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the evening is when there is more demand to fly to Sydney, so prices are often more expensive at around £1,240 per ticket.

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 £996 when searching weeks before you fly. 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 £833 on momondo.

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

There are 4 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 3% 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 return 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

£379

Fastest flight time

24h 25m

Direct flights

Every day

Airports in Sydney

1 airport
The best one-way flight to Sydney from London Heathrow Airport in the past 72 hours is £379. The best return flight deal from London Heathrow Airport to Sydney found on momondo in the last 72 hours is £528.
The fastest flight from London Heathrow Airport to Sydney takes 24h 25m
Direct flights go from London Heathrow Airport to Sydney every day.
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?

    Sydney Kingsford Smith is 10566.1 mi away from London Heathrow. A reasonable flight in good conditions will take 24h 25m.

  • 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 were last updated today.

  • 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify 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 travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • 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
Hainan AirlinesPriceFrom £339Free CancellationRating
8.2
43 reviews
Search Hainan Airlines flights
Turkish AirlinesPriceFrom £727Free CancellationRating
7.3
3,928 reviews
Search Turkish Airlines flights
SWISSPriceFrom £762Free CancellationRating
7.5
1,686 reviews
Search SWISS flights
Air New ZealandPriceFrom £773Free CancellationRating
7.9
501 reviews
Search Air New Zealand flights
Austrian AirlinesPriceFrom £793Free CancellationRating
7.6
823 reviews
Search Austrian Airlines flights
Vietnam AirlinesPriceFrom £808Free CancellationRating
7.5
196 reviews
Search Vietnam Airlines flights
SriLankan AirlinesPriceFrom £824Free CancellationRating
6.8
75 reviews
Search SriLankan Airlines flights
LufthansaPriceFrom £840Free CancellationRating
6.8
7,269 reviews
Search Lufthansa flights
United AirlinesPriceFrom £893Free CancellationRating
7.4
8,896 reviews
Search United Airlines flights
FinnairPriceFrom £929Free CancellationRating
7.6
1,316 reviews
Search Finnair flights

Travelling to a place near Sydney?

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

Why use momondo?

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

It is quick and easy to find London to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

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?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Sydney.

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

Yes momondo offers price alerts on flights to Sydney from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Sydney trip

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