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Cheap flights from London Heathrow Airport to Sydney from €498

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 13/9. 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
22:10 - 19:25LHR-SYD
36h 15m1 stop
China Southern Logo
21:45 - 19:00SYD-LHR
30h 15m1 stop
€778China Southern
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Thu, 18 Sep - Wed, 1 Oct
China Southern Logo
21:00 - 19:25LHR-SYD
37h 25m2 stops
China Southern Logo
10:15 - 19:00SYD-LHR
41h 45m1 stop
€779China Southern
Find Deal
Thu, 4 Sep - Thu, 11 Sep
SWISS Logo
06:00 - 11:50LHR-SYD
42h 50m2 stops
SWISS Logo
15:15 - 13:00SYD-LHR
32h 45m2 stops
€942SWISS
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Mon, 3 Nov - Wed, 19 Nov
SWISS Logo
18:40 - 07:15LHR-SYD
25h 35m2 stops
SWISS Logo
15:15 - 08:05SYD-LHR
27h 50m2 stops
€958SWISS
Find Deal
Thu, 6 Nov - Wed, 19 Nov
Cathay Pacific Logo
20:15 - 12:00LHR-SYD
28h 45m1 stop
Cathay Pacific Logo
22:20 - 17:20SYD-LHR
30h 00m1 stop
€978Cathay Pacific
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Wed, 29 Oct - Mon, 17 Nov
Lufthansa Logo
13:30 - 07:15LHR-SYD
30h 45m2 stops
Lufthansa Logo
16:10 - 16:50SYD-LHR
35h 40m2 stops
€979Lufthansa
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Mon, 8 Dec - Wed, 11 Feb
Lufthansa Logo
09:30 - 07:15LHR-SYD
34h 45m2 stops
Lufthansa Logo
16:10 - 14:50SYD-LHR
33h 40m2 stops
€981Lufthansa
Find Deal
Mon, 8 Dec - Wed, 11 Mar
Cathay Pacific Logo
22:05 - 12:00LHR-SYD
26h 55m1 stop
Cathay Pacific Logo
22:20 - 20:10SYD-LHR
32h 50m1 stop
€984Cathay Pacific
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Sat, 22 Nov - Tue, 25 Nov
Vietnam Airlines Logo
19:10 - 08:15LHR-SYD
28h 05m1 stop
Vietnam Airlines Logo
10:15 - 17:50SYD-LHR
40h 35m1 stop
€990Vietnam Airlines
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Thu, 4 Sep - Mon, 15 Sep
Vietnam Airlines Logo
11:00 - 13:15LHR-SYD
39h 15m1 stop
Vietnam Airlines Logo
11:50 - 07:15SYD-LHR
30h 25m1 stop
€1,004Vietnam Airlines
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Mon, 8 Dec - Mon, 9 Mar

China Southern flights from London Heathrow Airport to Sydney

Our best China Southern deals on London Heathrow Airport to Sydney flight tickets
China Southern
18 Sept
LHR22:10London Heathrow
36h 15m
1 stop
SYD19:25Sydney Kingsford Smith
1 Oct
SYD21:45Sydney Kingsford Smith
30h 15m
1 stop
LHR19:00London Heathrow
€778
Find similar
China Southern
4 Sept
LHR21:00London Heathrow
37h 25m
2 stops
SYD19:25Sydney Kingsford Smith
11 Sept
SYD10:15Sydney Kingsford Smith
41h 45m
1 stop
LHR19:00London Heathrow
€779
Find similar
China Southern
4 Sept
LHR22:10London Heathrow
36h 15m
1 stop
SYD19:25Sydney Kingsford Smith
11 Sept
SYD10:15Sydney Kingsford Smith
41h 45m
1 stop
LHR19:00London Heathrow
€781
Find similar

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
LHR21:15London Heathrow
28h 00m
1 stop
SYD12:15Sydney Kingsford Smith
2 Dec
SYD22:10Sydney Kingsford Smith
29h 45m
1 stop
LHR16:55London Heathrow
€1,001
Find similar
China Airlines
1 Nov
LHR21:15London Heathrow
28h 00m
1 stop
SYD12:15Sydney Kingsford Smith
16 Nov
SYD22:10Sydney Kingsford Smith
29h 45m
1 stop
LHR16:55London Heathrow
€1,007
Find similar
China Airlines
1 Nov
LHR21:15London Heathrow
28h 00m
1 stop
SYD12:15Sydney Kingsford Smith
18 Nov
SYD22:10Sydney Kingsford Smith
29h 45m
1 stop
LHR16:55London Heathrow
€1,009
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 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

Thu 18/9

22:10-19:25

1 stop36h 15m

Sydney Kingsford Smith

Wed 1/10

21:45-19:00

1 stop30h 15m

€778

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 4/9

21:00-19:25

2 stops37h 25m

Sydney Kingsford Smith

Thu 11/9

10:15-19:00

1 stop41h 45m

€779

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 3/11

06:00-11:50

2 stops42h 50m

Sydney Kingsford Smith

Wed 19/11

15:15-13:00

2 stops32h 45m

€942

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 6/11

18:40-07:15

2 stops25h 35m

Sydney Kingsford Smith

Wed 19/11

15:15-08:05

2 stops27h 50m

€958

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 29/10

20:15-12:00

1 stop28h 45m

Sydney Kingsford Smith

Mon 17/11

22:20-17:20

1 stop30h 00m

€978

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 8/12

13:30-07:15

2 stops30h 45m

Sydney Kingsford Smith

Wed 11/2

16:10-16:50

2 stops35h 40m

€979

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 8/12

09:30-07:15

2 stops34h 45m

Sydney Kingsford Smith

Wed 11/3

16:10-14:50

2 stops33h 40m

€981

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 22/11

22:05-12:00

1 stop26h 55m

Sydney Kingsford Smith

Tue 25/11

22:20-20:10

1 stop32h 50m

€984

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 4/9

19:10-08:15

1 stop28h 05m

Sydney Kingsford Smith

Mon 15/9

10:15-17:50

1 stop40h 35m

€990

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 8/12

11:00-13:15

1 stop39h 15m

Sydney Kingsford Smith

Mon 9/3

11:50-07:15

1 stop30h 25m

€1,004

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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?

The month of May is another great option to travel to Sydney, with average flight prices from London Heathrow Airport averaging around €937.

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 €932. 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 €1,238. 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 €956 when looking at flights departing in the evening. Try not to purchase tickets in the morning because they tend to be around €1,210. 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 €1,148 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 €960 on momondo.

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

There are 1 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

€498

Fastest flight time

23h 30m

Direct flights

Tue, Wed, Fri and Sat

Airports in Sydney

1 airport
The best one-way flight to Sydney from London Heathrow Airport in the past 72 hours is €498. The best return flight deal from London Heathrow Airport to Sydney found on momondo in the last 72 hours is €778.
The fastest flight from London Heathrow Airport to Sydney takes 23h 30m
Direct flights go from London Heathrow Airport to Sydney on Tuesday, Wednesday, Friday and Saturday. Airline offering direct flights is Qantas Airways..
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 23h 30m 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

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.

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