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Cheap flights from London Heathrow Airport to Sydney from €493

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 20/9. 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 - 06:35LHR-SYD
46h 05m2 stops
China Southern Logo
22:00 - 18:35SYD-LHR
31h 35m1 stop
€847China Southern
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Sun, 22 Feb - Sun, 8 Mar
China Southern Logo
21:30 - 20:20LHR-SYD
35h 50m2 stops
China Southern Logo
22:00 - 17:55SYD-LHR
30h 55m2 stops
€887China Southern
Find Deal
Sun, 22 Feb - Sun, 8 Mar
China Eastern Logo
21:00 - 11:00LHR-SYD
51h 00m2 stops
China Eastern Logo
13:30 - 17:30SYD-LHR
39h 00m3 stops
€896China Eastern
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Mon, 27 Oct - Mon, 10 Nov
China Southern Logo
22:00 - 20:20LHR-SYD
35h 20m1 stop
China Southern Logo
11:25 - 18:35SYD-LHR
42h 10m1 stop
€909China Southern
Find Deal
Sun, 22 Feb - Sun, 8 Mar
Vietnam Airlines Logo
11:00 - 09:50LHR-SYD
35h 50m1 stop
Vietnam Airlines Logo
10:15 - 16:55SYD-LHR
39h 40m1 stop
€960Vietnam Airlines
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Tue, 2 Dec - Wed, 10 Jun
Vietnam Airlines Logo
11:00 - 13:15LHR-SYD
39h 15m1 stop
Vietnam Airlines Logo
10:15 - 17:50SYD-LHR
40h 35m1 stop
€974Vietnam Airlines
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Mon, 1 Dec - Mon, 8 Jun
Etihad Airways Logo
19:20 - 06:35LHR-SYD
24h 15m1 stop
Etihad Airways Logo
21:30 - 06:40SYD-LHR
44h 10m1 stop
€977Etihad Airways
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Mon, 10 Nov - Mon, 1 Dec
Etihad Airways Logo
08:50 - 17:55LHR-SYD
22h 05m1 stop
Etihad Airways Logo
21:30 - 18:10SYD-LHR
31h 40m1 stop
€978Etihad Airways
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Mon, 1 Dec - Fri, 23 Jan
China Airlines Logo
21:15 - 12:15LHR-SYD
28h 00m1 stop
China Airlines Logo
22:10 - 16:55SYD-LHR
29h 45m1 stop
€1,002China Airlines
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Sat, 31 Jan - Mon, 9 Feb
China Airlines Logo
21:15 - 12:15LHR-SYD
28h 00m1 stop
China Airlines Logo
22:10 - 16:55SYD-LHR
29h 45m1 stop
€1,003China Airlines
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Wed, 31 Dec - Fri, 27 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
22 Feb
LHR21:30London Heathrow
46h 05m
2 stops
SYD06:35Sydney Kingsford Smith
8 Mar
SYD22:00Sydney Kingsford Smith
31h 35m
1 stop
LHR18:35London Heathrow
€847
Find similar
China Southern
22 Feb
LHR21:30London Heathrow
35h 50m
2 stops
SYD20:20Sydney Kingsford Smith
8 Mar
SYD22:00Sydney Kingsford Smith
30h 55m
2 stops
LHR17:55London Heathrow
€887
Find similar
China Southern
22 Feb
LHR22:00London Heathrow
35h 20m
1 stop
SYD20:20Sydney Kingsford Smith
8 Mar
SYD11:25Sydney Kingsford Smith
42h 10m
1 stop
LHR18:35London Heathrow
€909
Find similar

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
LHR11:00London Heathrow
35h 50m
1 stop
SYD09:50Sydney Kingsford Smith
10 Jun
SYD10:15Sydney Kingsford Smith
39h 40m
1 stop
LHR16:55London Heathrow
€960
Find similar
Vietnam Airlines
1 Dec
LHR11:00London Heathrow
39h 15m
1 stop
SYD13:15Sydney Kingsford Smith
8 Jun
SYD10:15Sydney Kingsford Smith
40h 35m
1 stop
LHR17:50London Heathrow
€974
Find similar
Vietnam Airlines
6 Dec
LHR11:00London Heathrow
35h 50m
1 stop
SYD09:50Sydney Kingsford Smith
8 Jun
SYD10:15Sydney Kingsford Smith
40h 35m
1 stop
LHR17:50London Heathrow
€1,000
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 13,528 searches. Data last updated 12 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

Sun 22/2

21:30-06:35

2 stops46h 05m

Sydney Kingsford Smith

Sun 8/3

22:00-18:35

1 stop31h 35m

€847

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 22/2

21:30-20:20

2 stops35h 50m

Sydney Kingsford Smith

Sun 8/3

22:00-17:55

2 stops30h 55m

€887

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 27/10

21:00-11:00

2 stops51h 00m

Sydney Kingsford Smith

Mon 10/11

13:30-17:30

3 stops39h 00m

€896

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 22/2

22:00-20:20

1 stop35h 20m

Sydney Kingsford Smith

Sun 8/3

11:25-18:35

1 stop42h 10m

€909

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 2/12

11:00-09:50

1 stop35h 50m

Sydney Kingsford Smith

Wed 10/6

10:15-16:55

1 stop39h 40m

€960

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 1/12

11:00-13:15

1 stop39h 15m

Sydney Kingsford Smith

Mon 8/6

10:15-17:50

1 stop40h 35m

€974

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 10/11

19:20-06:35

1 stop24h 15m

Sydney Kingsford Smith

Mon 1/12

21:30-06:40

1 stop44h 10m

€977

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 1/12

08:50-17:55

1 stop22h 05m

Sydney Kingsford Smith

Fri 23/1

21:30-18:10

1 stop31h 40m

€978

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 31/1

21:15-12:15

1 stop28h 00m

Sydney Kingsford Smith

Mon 9/2

22:10-16:55

1 stop29h 45m

€1,002

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 31/12

21:15-12:15

1 stop28h 00m

Sydney Kingsford Smith

Fri 27/2

22:10-16:55

1 stop29h 45m

€1,003

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 cheapest month to fly to Sydney?

The month of May is another great option to travel to Sydney, with average flight prices from London Heathrow Airport averaging around €924.

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

According to our data, Saturday is the cheapest day to fly to Sydney from London Heathrow Airport. The lowest ticket price found for a Saturday departure recently was €919. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around €1,222. These prices are subject to change though, so be sure to set up a Price Alert for flights to Sydney.

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

Flying to Sydney from London Heathrow Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as €943 when looking at flights departing in the evening. Try not to purchase tickets in the morning because they tend to be around €1,194. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 €1,132 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 €925 on momondo.

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

There is only 1 cabin class 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 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 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

Fastest flight time

22h 55m

Direct flights

Tue, Fri and Sun

Airports in Sydney

1 airport
The fastest flight from London Heathrow Airport to Sydney takes 22h 55m
Direct flights go from London Heathrow Airport to Sydney on Tuesday, Friday and 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?

    London Heathrow and Sydney Kingsford Smith are 17004.5 km apart from one another. Typically, this will take 22h 05m by plane in normal conditions.

  • 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 required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • 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
Parramatta
Coogee
Randwick
Terrigal

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?

Yes. momondo allows you to filter the results for London to Sydney flights to just show those with flexible booking policies.

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.

An easier way to manage your Sydney trip

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