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Cheap flights from London Heathrow Airport to Sydney from C$ 715

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 12/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to Sydney

Cheap round-trip flights

SWISS Logo
6:00 a.m. - 11:50 a.m.LHR-SYD
42h 50m2 stops
SWISS Logo
3:15 p.m. - 1:00 p.m.SYD-LHR
32h 45m2 stops
C$ 1,498SWISS
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Mon, 3 Nov - Wed, 19 Nov
SWISS Logo
6:40 p.m. - 7:15 a.m.LHR-SYD
25h 35m2 stops
SWISS Logo
3:15 p.m. - 8:05 a.m.SYD-LHR
27h 50m2 stops
C$ 1,523SWISS
Find Deal
Thu, 6 Nov - Wed, 19 Nov
Lufthansa Logo
11:30 a.m. - 7:15 a.m.LHR-SYD
32h 45m2 stops
Lufthansa Logo
4:10 p.m. - 5:50 p.m.SYD-LHR
36h 40m2 stops
C$ 1,545Lufthansa
Find Deal
Mon, 8 Dec - Thu, 12 Feb
Cathay Pacific Logo
10:15 p.m. - 12:00 p.m.LHR-SYD
27h 45m1 stop
Cathay Pacific Logo
10:20 p.m. - 8:10 p.m.SYD-LHR
32h 50m1 stop
C$ 1,553Cathay Pacific
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Sat, 25 Oct - Mon, 10 Nov
Cathay Pacific Logo
8:15 p.m. - 12:00 p.m.LHR-SYD
28h 45m1 stop
Cathay Pacific Logo
10:20 p.m. - 5:20 p.m.SYD-LHR
30h 00m1 stop
C$ 1,556Cathay Pacific
Find Deal
Wed, 29 Oct - Mon, 17 Nov
Lufthansa Logo
3:30 p.m. - 7:15 a.m.LHR-SYD
28h 45m2 stops
Lufthansa Logo
4:10 p.m. - 12:50 p.m.SYD-LHR
31h 40m2 stops
C$ 1,557Lufthansa
Find Deal
Mon, 8 Dec - Thu, 12 Feb
Vietnam Airlines Logo
7:50 p.m. - 8:15 a.m.LHR-SYD
27h 25m1 stop
Vietnam Airlines Logo
10:15 a.m. - 5:50 p.m.SYD-LHR
40h 35m1 stop
C$ 1,564Vietnam Airlines
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Tue, 2 Sep - Mon, 15 Sep
Vietnam Airlines Logo
7:10 p.m. - 8:15 a.m.LHR-SYD
28h 05m1 stop
Vietnam Airlines Logo
10:15 a.m. - 5:50 p.m.SYD-LHR
40h 35m1 stop
C$ 1,574Vietnam Airlines
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Thu, 4 Sep - Mon, 15 Sep
China Airlines Logo
9:15 p.m. - 12:15 p.m.LHR-SYD
28h 00m1 stop
China Airlines Logo
10:10 p.m. - 4:55 p.m.SYD-LHR
29h 45m1 stop
C$ 1,592China Airlines
Find Deal
Wed, 29 Oct - Tue, 2 Dec
China Airlines Logo
9:15 p.m. - 12:15 p.m.LHR-SYD
28h 00m1 stop
China Airlines Logo
10:10 p.m. - 4:55 p.m.SYD-LHR
29h 45m1 stop
C$ 1,601China Airlines
Find Deal
Sat, 1 Nov - Tue, 18 Nov

China Airlines flights from London Heathrow Airport to Sydney

Our best China Airlines deals on London Heathrow Airport to Sydney flight tickets
China Airlines
29 Oct
LHR9:15 p.m.London Heathrow
28h 00m
1 stop
SYD12:15 p.m.Sydney Kingsford Smith
2 Dec
SYD10:10 p.m.Sydney Kingsford Smith
29h 45m
1 stop
LHR4:55 p.m.London Heathrow
C$ 1,592
Find similar
China Airlines
1 Nov
LHR9:15 p.m.London Heathrow
28h 00m
1 stop
SYD12:15 p.m.Sydney Kingsford Smith
18 Nov
SYD10:10 p.m.Sydney Kingsford Smith
29h 45m
1 stop
LHR4:55 p.m.London Heathrow
C$ 1,601
Find similar
China Airlines
20 Sep
LHR9:10 p.m.London Heathrow
28h 35m
1 stop
SYD10:45 a.m.Sydney Kingsford Smith
26 Oct
SYD10:10 p.m.Sydney Kingsford Smith
29h 45m
1 stop
LHR4:55 p.m.London Heathrow
C$ 1,603
Find similar

United Airlines flights from London Heathrow Airport to Sydney

Our best United Airlines deals on London Heathrow Airport to Sydney flight tickets
United Airlines
6 Aug
LHR1:05 p.m.London Heathrow
32h 55m
1 stop
SYD7:00 a.m.Sydney Kingsford Smith
3 Sep
SYD9:30 a.m.Sydney Kingsford Smith
30h 55m
2 stops
LHR7:25 a.m.London Heathrow
C$ 2,271
Find similar
United Airlines
6 Aug
LHR12:15 p.m.London Heathrow
33h 45m
2 stops
SYD7:00 a.m.Sydney Kingsford Smith
3 Sep
SYD9:30 a.m.Sydney Kingsford Smith
33h 10m
2 stops
LHR9:40 a.m.London Heathrow
C$ 2,281
Find similar
United Airlines
8 Aug
LHR1:05 p.m.London Heathrow
32h 55m
1 stop
SYD7:00 a.m.Sydney Kingsford Smith
2 Sep
SYD10:20 a.m.Sydney Kingsford Smith
30h 05m
1 stop
LHR7:25 a.m.London Heathrow
C$ 2,285
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 96,600 searches. Data last updated 30 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 3/11

6:00 a.m.-11:50 a.m.

2 stops42h 50m

Sydney Kingsford Smith

Wed 19/11

3:15 p.m.-1:00 p.m.

2 stops32h 45m

C$ 1,498

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 6/11

6:40 p.m.-7:15 a.m.

2 stops25h 35m

Sydney Kingsford Smith

Wed 19/11

3:15 p.m.-8:05 a.m.

2 stops27h 50m

C$ 1,523

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 8/12

11:30 a.m.-7:15 a.m.

2 stops32h 45m

Sydney Kingsford Smith

Thu 12/2

4:10 p.m.-5:50 p.m.

2 stops36h 40m

C$ 1,545

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 25/10

10:15 p.m.-12:00 p.m.

1 stop27h 45m

Sydney Kingsford Smith

Mon 10/11

10:20 p.m.-8:10 p.m.

1 stop32h 50m

C$ 1,553

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 29/10

8:15 p.m.-12:00 p.m.

1 stop28h 45m

Sydney Kingsford Smith

Mon 17/11

10:20 p.m.-5:20 p.m.

1 stop30h 00m

C$ 1,556

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 8/12

3:30 p.m.-7:15 a.m.

2 stops28h 45m

Sydney Kingsford Smith

Thu 12/2

4:10 p.m.-12:50 p.m.

2 stops31h 40m

C$ 1,557

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 2/9

7:50 p.m.-8:15 a.m.

1 stop27h 25m

Sydney Kingsford Smith

Mon 15/9

10:15 a.m.-5:50 p.m.

1 stop40h 35m

C$ 1,564

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 4/9

7:10 p.m.-8:15 a.m.

1 stop28h 05m

Sydney Kingsford Smith

Mon 15/9

10:15 a.m.-5:50 p.m.

1 stop40h 35m

C$ 1,574

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 29/10

9:15 p.m.-12:15 p.m.

1 stop28h 00m

Sydney Kingsford Smith

Tue 2/12

10:10 p.m.-4:55 p.m.

1 stop29h 45m

C$ 1,592

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 1/11

9:15 p.m.-12:15 p.m.

1 stop28h 00m

Sydney Kingsford Smith

Tue 18/11

10:10 p.m.-4:55 p.m.

1 stop29h 45m

C$ 1,601

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?

If you aren’t able to travel to Sydney during the month of March, then flying in May is also cheap. Prices for this month can be found on momondo for an average of C$ 1,490.

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 Wednesday when prices can be found for as low as C$ 1,964. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around C$ 2,796.

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 C$ 1,825 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 C$ 1,527 on momondo.

Can stopping save me money on London Heathrow Airport to Sydney flights?

You could potentially save up to 3% on your flight if you consider stops on a London Heathrow Airport to Sydney flight.

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 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

C$ 715

Fastest flight time

22h 25m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from London Heathrow Airport in the past 72 hours is C$ 715. The best round-trip flight deal from London Heathrow Airport to Sydney found on momondo in the last 72 hours is C$ 1,498.
The fastest flight from London Heathrow Airport to Sydney takes 22h 25m
There are no direct flights from London Heathrow Airport to Sydney. Popular non-direct route for this connection is London Heathrow Airport - Sydney Kingsford Smith Airport.
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?

    The straight-line distance from London Heathrow to Sydney Kingsford Smith is 17004.5 km. 23h 30m is a normal flight duration for this route.

  • 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 are refreshed on a daily basis.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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?

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Wollongong
Penrith
Bondi Beach

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?

Flights from London to Sydney with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential London to Sydney flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Sydney, momondo offers a useful price alert feature which will track prices for flights to Sydney from London and alert you when they change.

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