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Cheap flights from London to Sydney from €545

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from London to Sydney

Cheap return flights

Enter your travel dates to find the best prices.
Air China Logo
20:25 - 08:05LHR  London Heathrow-SYD Sydney Kingsford Smith
24h 40m1 stop Beijing Capital
Air China Logo
10:10 - 17:50SYD  Sydney Kingsford Smith-LHR London Heathrow
42h 40m1 stop Beijing Capital
€879Air China
Mon, 7 Dec - Mon, 28 Dec
Air China Logo
11:35 - 08:05LGW  London Gatwick-SYD Sydney Kingsford Smith
33h 30m1 stop Beijing Capital
Air China Logo
10:30 - 17:10SYD  Sydney Kingsford Smith-LGW London Gatwick
41h 40m2 stops Beijing Capital Chengdu
€884Air China
Mon, 26 Oct - Tue, 10 Nov
Multiple Airlines Logo
11:35 - 09:25LGW  London Gatwick-SYD Sydney Kingsford Smith
34h 50m3 stops Amsterdam Schiphol Beijing Daxing Intl Guangzhou Baiyun
Multiple Airlines Logo
10:30 - 05:40SYD  Sydney Kingsford Smith-LGW London Gatwick
30h 10m1 stop Beijing Capital
€886Multiple Airlines
Mon, 7 Dec - Tue, 19 Jan
China Southern Logo
21:30 - 13:35LHR  London Heathrow-SYD Sydney Kingsford Smith
29h 05m2 stops Beijing Daxing Intl Guangzhou Baiyun
China Southern Logo
22:10 - 18:35SYD  Sydney Kingsford Smith-LHR London Heathrow
31h 25m2 stops Guangzhou Baiyun Beijing Daxing Intl
€887China Southern
Mon, 9 Nov - Tue, 24 Nov
China Eastern Logo
21:00 - 13:35LHR  London Heathrow-SYD Sydney Kingsford Smith
29h 35m1 stop Shanghai Pu Dong
China Eastern Logo
12:00 - 17:30SYD  Sydney Kingsford Smith-LHR London Heathrow
40h 30m1 stop Shanghai Pu Dong
€897China Eastern
Sat, 14 Nov - Fri, 27 Nov
China Southern Logo
09:50 - 13:20LGW  London Gatwick-SYD Sydney Kingsford Smith
40h 30m1 stop Guangzhou Baiyun
China Southern Logo
15:10 - 06:30SYD  Sydney Kingsford Smith-LGW London Gatwick
26h 20m1 stop Guangzhou Baiyun
€903China Southern
Sat, 31 Oct - Sun, 15 Nov
China Eastern Logo
21:00 - 13:35LHR  London Heathrow-SYD Sydney Kingsford Smith
29h 35m1 stop Shanghai Pu Dong
China Eastern Logo
21:30 - 17:30SYD  Sydney Kingsford Smith-LHR London Heathrow
31h 00m1 stop Shanghai Pu Dong
€903China Eastern
Thu, 12 Nov - Thu, 26 Nov
China Eastern Logo
21:00 - 13:35LHR  London Heathrow-SYD Sydney Kingsford Smith
29h 35m1 stop Shanghai Pu Dong
China Eastern Logo
21:30 - 17:30SYD  Sydney Kingsford Smith-LHR London Heathrow
31h 00m1 stop Shanghai Pu Dong
€903China Eastern
Thu, 12 Nov - Wed, 25 Nov
China Southern Logo
22:00 - 13:35LHR  London Heathrow-SYD Sydney Kingsford Smith
28h 35m1 stop Guangzhou Baiyun
China Southern Logo
22:10 - 18:35SYD  Sydney Kingsford Smith-LHR London Heathrow
31h 25m1 stop Guangzhou Baiyun
€907China Southern
Mon, 16 Nov - Tue, 24 Nov
China Southern Logo
22:00 - 09:25LHR  London Heathrow-SYD Sydney Kingsford Smith
24h 25m1 stop Guangzhou Baiyun
China Southern Logo
15:15 - 18:35SYD  Sydney Kingsford Smith-LHR London Heathrow
38h 20m1 stop Guangzhou Baiyun
€907China Southern
Sat, 14 Nov - Wed, 25 Nov

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Air China flights from London to Sydney

Our best Air China deals on London to Sydney flight tickets
Air China
7 Dec
LHR20:25London Heathrow
24h 40m
1 stop
SYD08:05Sydney Kingsford Smith
28 Dec
SYD10:10Sydney Kingsford Smith
42h 40m
1 stop
LHR17:50London Heathrow
€879
Air China
26 Oct
LGW11:35London Gatwick
33h 30m
1 stop
SYD08:05Sydney Kingsford Smith
10 Nov
SYD10:30Sydney Kingsford Smith
41h 40m
2 stops
LGW17:10London Gatwick
€884
Air China
10 Nov
LHR20:25London Heathrow
25h 10m
1 stop
SYD08:35Sydney Kingsford Smith
27 Nov
SYD10:30Sydney Kingsford Smith
40h 25m
1 stop
LHR15:55London Heathrow
€912

China Southern flights from London to Sydney

Our best China Southern deals on London to Sydney flight tickets
China Southern
9 Nov
LHR21:30London Heathrow
29h 05m
2 stops
SYD13:35Sydney Kingsford Smith
24 Nov
SYD22:10Sydney Kingsford Smith
31h 25m
2 stops
LHR18:35London Heathrow
€887
China Southern
31 Oct
LGW09:50London Gatwick
40h 30m
1 stop
SYD13:20Sydney Kingsford Smith
15 Nov
SYD15:10Sydney Kingsford Smith
26h 20m
1 stop
LGW06:30London Gatwick
€903
China Southern
11 Nov
LHR22:00London Heathrow
28h 35m
1 stop
SYD13:35Sydney Kingsford Smith
24 Nov
SYD15:15Sydney Kingsford Smith
38h 20m
1 stop
LHR18:35London Heathrow
€907

momondo Fare Finder

 
Use the filters below to find and compare flights from London to Sydney that are best for you.

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Depart

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Price

Cheapest return flight

LondonSydney

LHR London Heathrow - SYD Sydney Kingsford Smith

LHRSYD

London Heathrow

Mon 7/12

20:25-08:05

1 stop24h 40m

Sydney Kingsford Smith

Mon 28/12

10:10-17:50

1 stop42h 40m

€879

LondonSydney

LGW London Gatwick - SYD Sydney Kingsford Smith

LGWSYD

London Gatwick

Mon 26/10

11:35-08:05

1 stop33h 30m

Sydney Kingsford Smith

Tue 10/11

10:30-17:10

2 stops41h 40m

€884

LondonSydney

LGW London Gatwick - SYD Sydney Kingsford Smith

LGWSYD

London Gatwick

Mon 7/12

11:35-09:25

3 stops34h 50m

Sydney Kingsford Smith

Tue 19/1

10:30-05:40

1 stop30h 10m

€886

LondonSydney

LHR London Heathrow - SYD Sydney Kingsford Smith

LHRSYD

London Heathrow

Mon 9/11

21:30-13:35

2 stops29h 05m

Sydney Kingsford Smith

Tue 24/11

22:10-18:35

2 stops31h 25m

€887

LondonSydney

LHR London Heathrow - SYD Sydney Kingsford Smith

LHRSYD

London Heathrow

Sat 14/11

21:00-13:35

1 stop29h 35m

Sydney Kingsford Smith

Fri 27/11

12:00-17:30

1 stop40h 30m

€897

LondonSydney

LGW London Gatwick - SYD Sydney Kingsford Smith

LGWSYD

London Gatwick

Sat 31/10

09:50-13:20

1 stop40h 30m

Sydney Kingsford Smith

Sun 15/11

15:10-06:30

1 stop26h 20m

€903

LondonSydney

LHR London Heathrow - SYD Sydney Kingsford Smith

LHRSYD

London Heathrow

Thu 12/11

21:00-13:35

1 stop29h 35m

Sydney Kingsford Smith

Thu 26/11

21:30-17:30

1 stop31h 00m

€903

LondonSydney

LHR London Heathrow - SYD Sydney Kingsford Smith

LHRSYD

London Heathrow

Thu 12/11

21:00-13:35

1 stop29h 35m

Sydney Kingsford Smith

Wed 25/11

21:30-17:30

1 stop31h 00m

€903
Fastest return journey

LondonSydney

LHR London Heathrow - SYD Sydney Kingsford Smith

LHRSYD

London Heathrow

Mon 16/11

22:00-13:35

1 stop28h 35m

Sydney Kingsford Smith

Tue 24/11

22:10-18:35

1 stop31h 25m

€907

LondonSydney

LHR London Heathrow - SYD Sydney Kingsford Smith

LHRSYD

London Heathrow

Sat 14/11

22:00-09:25

1 stop24h 25m

Sydney Kingsford Smith

Wed 25/11

15:15-18:35

1 stop38h 20m

€907

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 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 and Sydney?

Prices are currently low for flights on this route.

Typical prices usually range from €904 to €1,369.
The lowest price recently found on this route was €879.

What is the cheapest month to fly to Sydney?

The month of June is another great option to travel to Sydney, with average flight prices from London averaging around €1,085.

How far in advance should I book a flight from London to Sydney?

You are more likely to see cheaper flights to Sydney from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around €1,270 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 for as low as €1,181 on momondo.

Can stopping save me money on London to Sydney flights?

You could potentially save up to 50% on your flight if you consider stops on a London to Sydney flight.

How have London to Sydney flight prices changed over time?

As of September 2026, prices for London to Sydney flights are approximately 4% cheaper when compared to flights at the same time last year.

When to book flights from London to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from London to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London to Sydney (LON to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Sydney

Best price found

€545

Fastest flight time

22h 55m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in Sydney

1 airport
The best one-way flight to Sydney from London in the past 72 hours is €545. The best return flight deal from London to Sydney found on momondo in the last 72 hours is €879.
The fastest flight from London to Sydney takes 22h 55m
Direct flights go from London to Sydney on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights..
There is 1 airport in Sydney. From London there are direct flights to Sydney Kingsford Smith (SYD).
Search flight deals

Frequently asked questions about flying from London to Sydney

  • How far is London to Sydney Kingsford Smith by plane?

    There are 16983.0 km between London and Sydney Kingsford Smith. Typically, this will take 22h 55m by plane in normal conditions.

  • When did momondo last update prices for flights from London to Sydney Kingsford Smith Airport?

    Prices for flights from London to Sydney Kingsford Smith Airport are updated daily.

  • How many operators does momondo search for flights from London to Sydney Kingsford Smith Airport?

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London 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 to Sydney?

Best airlines flying from London to Sydney

Compare and see reviews for airlines that fly from London to Sydney with momondo
Airline
Rating
Free Cancellation
Price
China SouthernPriceFrom €820Free CancellationRating
7.3
172 reviews
Search China Southern flights

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Cronulla
Parramatta
Coogee
Terrigal
Randwick

Why use momondo?

Why should I use momondo to find a flight deal from London to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Sydney for you.

Can I find flights from London to Sydney with flexible booking policies on momondo?

All flight searches from London to Sydney on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Sydney from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Sydney from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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China Southern