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Cheap flights from London to Sydney from €511

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 to Sydney departing on 9/3. 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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Cheap return flights

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China Southern Logo
22:00 - 20:20LHR-SYD
35h 20m1 stop
China Southern Logo
08:10 - 18:35SYD-LHR
45h 25m1 stop
€862China Southern
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Thu, 20 Nov - Thu, 11 Dec
China Southern Logo
17:15 - 09:25LHR-SYD
29h 10m2 stops
China Southern Logo
21:45 - 16:15SYD-LHR
51h 30m2 stops
€872China Southern
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Wed, 25 Mar - Mon, 4 May
China Southern Logo
22:00 - 20:20LHR-SYD
35h 20m1 stop
China Southern Logo
10:05 - 19:00SYD-LHR
41h 55m1 stop
€873China Southern
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Wed, 25 Mar - Mon, 4 May
China Eastern Logo
21:00 - 06:30LHR-SYD
22h 30m1 stop
China Eastern Logo
12:00 - 17:30SYD-LHR
40h 30m1 stop
€874China Eastern
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Wed, 25 Feb - Fri, 13 Mar
Multiple Airlines Logo
21:30 - 07:30LHR-SYD
47h 00m2 stops
Multiple Airlines Logo
21:30 - 14:30SYD-LHR
28h 00m1 stop
€882Multiple Airlines
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Fri, 14 Nov - Tue, 18 Nov
Multiple Airlines Logo
21:05 - 18:50LHR-SYD
34h 45m3 stops
Multiple Airlines Logo
20:05 - 19:20SYD-LHR
34h 15m3 stops
€914Multiple Airlines
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Sun, 9 Nov - Sat, 22 Nov
Etihad Airways Logo
13:55 - 06:35LHR-SYD
29h 40m1 stop
Etihad Airways Logo
21:30 - 14:30SYD-LHR
28h 00m1 stop
€916Etihad Airways
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Fri, 14 Nov - Tue, 18 Nov
China Airlines Logo
21:15 - 12:15LHR-SYD
28h 00m1 stop
China Airlines Logo
22:10 - 16:55SYD-LHR
29h 45m1 stop
€926China Airlines
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Fri, 27 Feb - Mon, 23 Mar
China Airlines Logo
21:15 - 12:15LHR-SYD
28h 00m1 stop
China Airlines Logo
22:10 - 16:55SYD-LHR
29h 45m1 stop
€927China Airlines
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Wed, 25 Feb - Fri, 27 Mar
Etihad Airways Logo
13:55 - 17:55LHR-SYD
41h 00m1 stop
Etihad Airways Logo
21:30 - 12:05SYD-LHR
25h 35m1 stop
€964Etihad Airways
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Sun, 30 Nov - Fri, 5 Dec

China Southern flights from London to Sydney

Our best China Southern deals on London to Sydney flight tickets
China Southern
20 Nov
LHR22:00London Heathrow
35h 20m
1 stop
SYD20:20Sydney Kingsford Smith
11 Dec
SYD08:10Sydney Kingsford Smith
45h 25m
1 stop
LHR18:35London Heathrow
€862
Find similar
China Southern
25 Mar
LHR17:15London Heathrow
29h 10m
2 stops
SYD09:25Sydney Kingsford Smith
4 May
SYD21:45Sydney Kingsford Smith
51h 30m
2 stops
LHR16:15London Heathrow
€872
Find similar
China Southern
25 Mar
LHR22:00London Heathrow
35h 20m
1 stop
SYD20:20Sydney Kingsford Smith
4 May
SYD10:05Sydney Kingsford Smith
41h 55m
1 stop
LHR19:00London Heathrow
€873
Find similar

China Airlines flights from London to Sydney

Our best China Airlines deals on London to Sydney flight tickets
China Airlines
27 Feb
LHR21:15London Heathrow
28h 00m
1 stop
SYD12:15Sydney Kingsford Smith
23 Mar
SYD22:10Sydney Kingsford Smith
29h 45m
1 stop
LHR16:55London Heathrow
€926
Find similar
China Airlines
25 Feb
LHR21:15London Heathrow
28h 00m
1 stop
SYD12:15Sydney Kingsford Smith
27 Mar
SYD22:10Sydney Kingsford Smith
29h 45m
1 stop
LHR16:55London Heathrow
€927
Find similar
China Airlines
4 Feb
LHR21:15London Heathrow
28h 00m
1 stop
SYD12:15Sydney Kingsford Smith
16 Feb
SYD22:10Sydney Kingsford Smith
29h 45m
1 stop
LHR16:55London Heathrow
€940
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London 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 October 2025.
Use the filters below to find and compare flights from London to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 20/11

22:00-20:20

1 stop35h 20m

Sydney Kingsford Smith

Thu 11/12

08:10-18:35

1 stop45h 25m

€862

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 25/3

17:15-09:25

2 stops29h 10m

Sydney Kingsford Smith

Mon 4/5

21:45-16:15

2 stops51h 30m

€872

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 25/3

22:00-20:20

1 stop35h 20m

Sydney Kingsford Smith

Mon 4/5

10:05-19:00

1 stop41h 55m

€873

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 25/2

21:00-06:30

1 stop22h 30m

Sydney Kingsford Smith

Fri 13/3

12:00-17:30

1 stop40h 30m

€874

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 14/11

21:30-07:30

2 stops47h 00m

Sydney Kingsford Smith

Tue 18/11

21:30-14:30

1 stop28h 00m

€882

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 9/11

21:05-18:50

3 stops34h 45m

Sydney Kingsford Smith

Sat 22/11

20:05-19:20

3 stops34h 15m

€914

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 14/11

13:55-06:35

1 stop29h 40m

Sydney Kingsford Smith

Tue 18/11

21:30-14:30

1 stop28h 00m

€916

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 27/2

21:15-12:15

1 stop28h 00m

Sydney Kingsford Smith

Mon 23/3

22:10-16:55

1 stop29h 45m

€926

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 25/2

21:15-12:15

1 stop28h 00m

Sydney Kingsford Smith

Fri 27/3

22:10-16:55

1 stop29h 45m

€927

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 30/11

13:55-17:55

1 stop41h 00m

Sydney Kingsford Smith

Fri 5/12

21:30-12:05

1 stop25h 35m

€964

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?

What is the cheapest month to fly to Sydney?

The month of March is another great option to travel to Sydney, with average flight prices from London averaging around €967.

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. The lowest ticket price found for a Saturday departure recently was €926. 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 €1,230. 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 in the evening is the least expensive time of day to depart. momondo users have found prices as low as €950 when looking at flights departing in the evening. Try not to purchase tickets in the morning because they tend to be around €1,203. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London to Sydney Kingsford Smith flight route?

Fly from London Heathrow to Sydney Kingsford Smith for the best London - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around €1,146 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 €977 on momondo.

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

There is only 1 cabin class available to choose from on London 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.

Can stopping save me money on London to Sydney flights?

You could potentially save up to 57% 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 October 2025, prices for London to Sydney flights are approximately 16% 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

Fastest flight time

23h 25m

Direct flights

Mon, Wed, Thu, Sat and Sun

Airports in Sydney

1 airport
The fastest flight from London to Sydney takes 23h 25m
Direct flights go from London to Sydney on Monday, Wednesday, Thursday, Saturday 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 to Sydney Kingsford Smith by plane?

    There are 16983.0 km between London and Sydney Kingsford Smith. Typically, this will take 22h 05m 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 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?

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?

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.

An easier way to manage your Sydney trip

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Aer Lingus
Etihad Airways
Turkish Airlines
KLM
Lufthansa
Qatar Airways
British Airways
Emirates
Scandinavian Airlines
Pegasus Airlines
Air France
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