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Cheap flights from London Heathrow Airport to Sydney from C$ 801

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 26/10. 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

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Find the cheapest flights from London Heathrow Airport to Sydney

Cheap round-trip flights

Austrian Airlines Logo
2:50 p.m. - 11:55 a.m.LHR-SYD
34h 05m2 stops
Austrian Airlines Logo
3:35 p.m. - 8:20 a.m.SYD-LHR
27h 45m2 stops
C$ 1,514Austrian Airlines
Find Deal
Fri, 6 Mar - Mon, 16 Mar
Etihad Airways Logo
8:55 p.m. - 5:55 p.m.LHR-SYD
34h 00m1 stop
Etihad Airways Logo
9:30 p.m. - 12:05 p.m.SYD-LHR
25h 35m1 stop
C$ 1,539Etihad Airways
Find Deal
Wed, 5 Nov - Thu, 20 Nov
Etihad Airways Logo
8:55 p.m. - 5:55 p.m.LHR-SYD
34h 00m1 stop
Etihad Airways Logo
4:35 p.m. - 12:05 p.m.SYD-LHR
30h 30m1 stop
C$ 1,543Etihad Airways
Find Deal
Sun, 1 Mar - Wed, 18 Mar
Vietnam Airlines Logo
11:00 a.m. - 9:50 a.m.LHR-SYD
35h 50m1 stop
Vietnam Airlines Logo
10:15 a.m. - 4:55 p.m.SYD-LHR
39h 40m1 stop
C$ 1,559Vietnam Airlines
Find Deal
Tue, 2 Dec - Wed, 10 Jun
Austrian Airlines Logo
7:25 p.m. - 11:55 a.m.LHR-SYD
29h 30m2 stops
Austrian Airlines Logo
3:35 p.m. - 2:05 p.m.SYD-LHR
33h 30m2 stops
C$ 1,561Austrian Airlines
Find Deal
Sat, 7 Mar - Mon, 16 Mar
Vietnam Airlines Logo
11:00 a.m. - 1:15 p.m.LHR-SYD
39h 15m1 stop
Vietnam Airlines Logo
10:15 a.m. - 5:50 p.m.SYD-LHR
40h 35m1 stop
C$ 1,581Vietnam Airlines
Find Deal
Mon, 1 Dec - Mon, 8 Jun
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$ 1,625China Airlines
Find Deal
Wed, 4 Feb - Mon, 23 Feb
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$ 1,626China Airlines
Find Deal
Sat, 31 Jan - Sun, 15 Feb
Turkish Airlines Logo
5:45 p.m. - 7:40 a.m.LHR-SYD
26h 55m2 stops
Turkish Airlines Logo
9:15 p.m. - 4:00 p.m.SYD-LHR
29h 45m1 stop
C$ 1,629Turkish Airlines
Find Deal
Sun, 1 Feb - Sun, 22 Feb
Turkish Airlines Logo
5:45 p.m. - 7:40 a.m.LHR-SYD
26h 55m2 stops
Turkish Airlines Logo
9:15 p.m. - 10:25 p.m.SYD-LHR
36h 10m2 stops
C$ 1,665Turkish Airlines
Find Deal
Sun, 8 Mar - Sun, 22 Mar

Vietnam Airlines flights from London Heathrow Airport to Sydney

Our best Vietnam Airlines deals on London Heathrow Airport to Sydney flight tickets
Vietnam Airlines
2 Dec
LHR11:00 a.m.London Heathrow
35h 50m
1 stop
SYD9:50 a.m.Sydney Kingsford Smith
10 Jun
SYD10:15 a.m.Sydney Kingsford Smith
39h 40m
1 stop
LHR4:55 p.m.London Heathrow
C$ 1,559
Find similar
Vietnam Airlines
1 Dec
LHR11:00 a.m.London Heathrow
39h 15m
1 stop
SYD1:15 p.m.Sydney Kingsford Smith
8 Jun
SYD10:15 a.m.Sydney Kingsford Smith
40h 35m
1 stop
LHR5:50 p.m.London Heathrow
C$ 1,581
Find similar
Vietnam Airlines
6 Dec
LHR11:00 a.m.London Heathrow
35h 50m
1 stop
SYD9:50 a.m.Sydney Kingsford Smith
8 Jun
SYD10:15 a.m.Sydney Kingsford Smith
40h 35m
1 stop
LHR5:50 p.m.London Heathrow
C$ 1,622
Find similar

Cathay Pacific flights from London Heathrow Airport to Sydney

Our best Cathay Pacific deals on London Heathrow Airport to Sydney flight tickets
Cathay Pacific
27 Oct
LHR5:50 p.m.London Heathrow
26h 25m
1 stop
SYD7:15 a.m.Sydney Kingsford Smith
10 Nov
SYD10:20 p.m.Sydney Kingsford Smith
30h 00m
1 stop
LHR5:20 p.m.London Heathrow
C$ 1,653
Find similar
Cathay Pacific
5 Nov
LHR11:00 a.m.London Heathrow
22h 50m
1 stop
SYD8:50 p.m.Sydney Kingsford Smith
23 Nov
SYD10:20 p.m.Sydney Kingsford Smith
27h 40m
1 stop
LHR3:00 p.m.London Heathrow
C$ 1,658
Find similar
Cathay Pacific
18 Sep
LHR8:10 p.m.London Heathrow
27h 30m
1 stop
SYD8:40 a.m.Sydney Kingsford Smith
9 Oct
SYD10:20 p.m.Sydney Kingsford Smith
26h 55m
1 stop
LHR3:15 p.m.London Heathrow
C$ 1,924
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 11 September 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

Fri 6/3

2:50 p.m.-11:55 a.m.

2 stops34h 05m

Sydney Kingsford Smith

Mon 16/3

3:35 p.m.-8:20 a.m.

2 stops27h 45m

C$ 1,514

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 5/11

8:55 p.m.-5:55 p.m.

1 stop34h 00m

Sydney Kingsford Smith

Thu 20/11

9:30 p.m.-12:05 p.m.

1 stop25h 35m

C$ 1,539

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 1/3

8:55 p.m.-5:55 p.m.

1 stop34h 00m

Sydney Kingsford Smith

Wed 18/3

4:35 p.m.-12:05 p.m.

1 stop30h 30m

C$ 1,543

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 2/12

11:00 a.m.-9:50 a.m.

1 stop35h 50m

Sydney Kingsford Smith

Wed 10/6

10:15 a.m.-4:55 p.m.

1 stop39h 40m

C$ 1,559

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 7/3

7:25 p.m.-11:55 a.m.

2 stops29h 30m

Sydney Kingsford Smith

Mon 16/3

3:35 p.m.-2:05 p.m.

2 stops33h 30m

C$ 1,561

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 1/12

11:00 a.m.-1:15 p.m.

1 stop39h 15m

Sydney Kingsford Smith

Mon 8/6

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

1 stop40h 35m

C$ 1,581

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 4/2

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

1 stop28h 00m

Sydney Kingsford Smith

Mon 23/2

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

1 stop29h 45m

C$ 1,625

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 31/1

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

1 stop28h 00m

Sydney Kingsford Smith

Sun 15/2

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

1 stop29h 45m

C$ 1,626

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 1/2

5:45 p.m.-7:40 a.m.

2 stops26h 55m

Sydney Kingsford Smith

Sun 22/2

9:15 p.m.-4:00 p.m.

1 stop29h 45m

C$ 1,629

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 8/3

5:45 p.m.-7:40 a.m.

2 stops26h 55m

Sydney Kingsford Smith

Sun 22/3

9:15 p.m.-10:25 p.m.

2 stops36h 10m

C$ 1,665

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 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$ 1,499.

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$ 1,978. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around C$ 2,816.

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$ 1,838 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$ 1,500 on momondo.

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

You could potentially save up to 32% 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 September 2025, prices for London Heathrow Airport to Sydney flights are approximately 13% 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 20m

Direct flights

Sun

Airports in Sydney

1 airport
The fastest flight from London Heathrow Airport to Sydney takes 23h 20m
Direct flights go from London Heathrow Airport to Sydney on Sunday. There are no airlines offering direct flights.
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. 22h 05m 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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