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Cheap flights from London Heathrow Airport to Sydney from C$ 861

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 5/12. 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

Enter your travel dates to find the best prices.
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$ 1,505China Airlines
Find Deal
Fri, 27 Feb - Mon, 23 Mar
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$ 1,506China Airlines
Find Deal
Wed, 25 Feb - Fri, 27 Mar
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$ 1,527China Airlines
Find Deal
Wed, 4 Feb - Tue, 24 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$ 1,548China Airlines
Find Deal
Mon, 2 Feb - Fri, 27 Feb
Etihad Airways Logo
8:50 a.m. - 5:55 p.m.LHR-SYD
22h 05m1 stop
Etihad Airways Logo
9:30 p.m. - 6:40 a.m.SYD-LHR
44h 10m1 stop
C$ 1,566Etihad Airways
Find Deal
Sun, 30 Nov - Tue, 9 Dec
Etihad Airways Logo
8:55 p.m. - 6:35 a.m.LHR-SYD
22h 40m1 stop
Etihad Airways Logo
9:30 p.m. - 12:05 p.m.SYD-LHR
25h 35m1 stop
C$ 1,568Etihad Airways
Find Deal
Wed, 3 Dec - Fri, 6 Mar
Cathay Pacific Logo
5:50 p.m. - 12:00 p.m.LHR-SYD
31h 10m1 stop
Cathay Pacific Logo
3:15 p.m. - 3:00 p.m.SYD-LHR
34h 45m1 stop
C$ 1,652Cathay Pacific
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Thu, 26 Feb - Sun, 22 Mar
Qatar Airways Logo
9:30 p.m. - 6:50 a.m.LHR-SYD
22h 20m1 stop
Qatar Airways Logo
3:50 p.m. - 5:55 a.m.SYD-LHR
25h 05m1 stop
C$ 1,653Qatar Airways
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Tue, 3 Mar - Wed, 18 Mar
British Airways Logo
8:40 a.m. - 6:50 p.m.LHR-SYD
23h 10m1 stop
British Airways Logo
9:40 p.m. - 2:00 p.m.SYD-LHR
27h 20m1 stop
C$ 1,668British Airways
Find Deal
Mon, 2 Mar - Thu, 12 Mar
Cathay Pacific Logo
6:20 p.m. - 6:10 a.m.LHR-SYD
26h 50m1 stop
Cathay Pacific Logo
9:50 p.m. - 6:15 p.m.SYD-LHR
29h 25m1 stop
C$ 1,671Cathay Pacific
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Wed, 8 Apr - Mon, 11 May

China Airlines flights from London Heathrow Airport to Sydney

Our best China Airlines deals on London Heathrow Airport to Sydney flight tickets
China Airlines
27 Feb
LHR9:15 p.m.London Heathrow
28h 00m
1 stop
SYD12:15 p.m.Sydney Kingsford Smith
23 Mar
SYD10:10 p.m.Sydney Kingsford Smith
29h 45m
1 stop
LHR4:55 p.m.London Heathrow
C$ 1,505
Find similar
China Airlines
25 Feb
LHR9:15 p.m.London Heathrow
28h 00m
1 stop
SYD12:15 p.m.Sydney Kingsford Smith
27 Mar
SYD10:10 p.m.Sydney Kingsford Smith
29h 45m
1 stop
LHR4:55 p.m.London Heathrow
C$ 1,506
Find similar
China Airlines
4 Feb
LHR9:15 p.m.London Heathrow
28h 00m
1 stop
SYD12:15 p.m.Sydney Kingsford Smith
24 Feb
SYD10:10 p.m.Sydney Kingsford Smith
29h 45m
1 stop
LHR4:55 p.m.London Heathrow
C$ 1,527
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
26 Feb
LHR5:50 p.m.London Heathrow
31h 10m
1 stop
SYD12:00 p.m.Sydney Kingsford Smith
22 Mar
SYD3:15 p.m.Sydney Kingsford Smith
34h 45m
1 stop
LHR3:00 p.m.London Heathrow
C$ 1,652
Find similar
Cathay Pacific
8 Apr
LHR6:20 p.m.London Heathrow
26h 50m
1 stop
SYD6:10 a.m.Sydney Kingsford Smith
11 May
SYD9:50 p.m.Sydney Kingsford Smith
29h 25m
1 stop
LHR6:15 p.m.London Heathrow
C$ 1,671
Find similar
Cathay Pacific
5 Feb
LHR5:50 p.m.London Heathrow
26h 25m
1 stop
SYD7:15 a.m.Sydney Kingsford Smith
25 Feb
SYD10:20 p.m.Sydney Kingsford Smith
30h 00m
1 stop
LHR5:20 p.m.London Heathrow
C$ 1,707
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 29 October 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 27/2

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

1 stop28h 00m

Sydney Kingsford Smith

Mon 23/3

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

1 stop29h 45m

C$ 1,505

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 25/2

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

1 stop28h 00m

Sydney Kingsford Smith

Fri 27/3

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

1 stop29h 45m

C$ 1,506

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 4/2

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

1 stop28h 00m

Sydney Kingsford Smith

Tue 24/2

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

1 stop29h 45m

C$ 1,527

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 2/2

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

1 stop28h 00m

Sydney Kingsford Smith

Fri 27/2

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

1 stop29h 45m

C$ 1,548

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 30/11

8:50 a.m.-5:55 p.m.

1 stop22h 05m

Sydney Kingsford Smith

Tue 9/12

9:30 p.m.-6:40 a.m.

1 stop44h 10m

C$ 1,566

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 3/12

8:55 p.m.-6:35 a.m.

1 stop22h 40m

Sydney Kingsford Smith

Fri 6/3

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

1 stop25h 35m

C$ 1,568

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 26/2

5:50 p.m.-12:00 p.m.

1 stop31h 10m

Sydney Kingsford Smith

Sun 22/3

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

1 stop34h 45m

C$ 1,652

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 3/3

9:30 p.m.-6:50 a.m.

1 stop22h 20m

Sydney Kingsford Smith

Wed 18/3

3:50 p.m.-5:55 a.m.

1 stop25h 05m

C$ 1,653

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 2/3

8:40 a.m.-6:50 p.m.

1 stop23h 10m

Sydney Kingsford Smith

Thu 12/3

9:40 p.m.-2:00 p.m.

1 stop27h 20m

C$ 1,668

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 8/4

6:20 p.m.-6:10 a.m.

1 stop26h 50m

Sydney Kingsford Smith

Mon 11/5

9:50 p.m.-6:15 p.m.

1 stop29h 25m

C$ 1,671

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$ 1,492.

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$ 1,995. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around C$ 2,840.

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$ 1,863 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$ 1,589 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 October 2025, prices for London Heathrow Airport to Sydney flights are approximately 15% 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

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?

    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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