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Cheap flights from London to Sydney from $903

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 8/2. 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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Cheap return flights

Enter your travel dates to find the best prices.
Air China Logo
11:35 - 15:30LGW-SYD
40h 55m1 stop
Air China Logo
20:40 - 05:35SYD-LGW
43h 55m1 stop
$1,440Air China
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Fri, 26 Dec - Wed, 4 Feb
Multiple Airlines Logo
08:05 - 08:05STN-SYD
37h 00m3 stops
Multiple Airlines Logo
21:15 - 09:50SYD-STN
47h 35m2 stops
$1,440Multiple Airlines
Find Deal
Thu, 12 Mar - Sat, 21 Mar
China Southern Logo
22:10 - 08:25LHR-SYD
25h 15m1 stop
China Southern Logo
21:45 - 19:00SYD-LHR
30h 15m1 stop
$1,443China Southern
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Sat, 25 Apr - Sat, 16 May
China Eastern Logo
21:00 - 11:00LHR-SYD
51h 00m3 stops
China Eastern Logo
21:30 - 17:30SYD-LHR
31h 00m1 stop
$1,445China Eastern
Find Deal
Mon, 29 Dec - Mon, 26 Jan
China Southern Logo
20:20 - 20:20LGW-SYD
37h 00m2 stops
China Southern Logo
22:00 - 06:25SYD-LGW
43h 25m1 stop
$1,445China Southern
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Sat, 29 Nov - Sat, 6 Dec
China Eastern Logo
21:00 - 11:00LHR-SYD
51h 00m3 stops
China Eastern Logo
12:20 - 17:30SYD-LHR
40h 10m2 stops
$1,451China Eastern
Find Deal
Tue, 18 Nov - Tue, 25 Nov
SWISS Logo
19:20 - 06:10LCY-SYD
25h 50m2 stops
SWISS Logo
11:00 - 07:35SYD-LCY
29h 35m2 stops
$1,828SWISS
Find Deal
Tue, 21 Apr - Sun, 24 May
SWISS Logo
19:10 - 07:15LCY-SYD
25h 05m2 stops
SWISS Logo
15:15 - 08:45SYD-LCY
28h 30m2 stops
$1,909SWISS
Find Deal
Mon, 2 Mar - Thu, 19 Mar
KLM Logo
17:05 - 06:35LCY-SYD
26h 30m2 stops
KLM Logo
15:55 - 09:30SYD-LCY
28h 35m2 stops
$2,082KLM
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Wed, 12 Nov - Sun, 18 Jan
KLM Logo
17:05 - 06:35LCY-SYD
26h 30m2 stops
KLM Logo
15:55 - 09:30SYD-LCY
28h 35m2 stops
$2,149KLM
Find Deal
Wed, 12 Nov - Mon, 1 Dec

Air China flights from London to Sydney

Our best Air China deals on London to Sydney flight tickets
Air China
26 Dec
LGW11:35London Gatwick
40h 55m
1 stop
SYD15:30Sydney Kingsford Smith
4 Feb
SYD20:40Sydney Kingsford Smith
43h 55m
1 stop
LGW05:35London Gatwick
$1,440
Find similar
Air China
1 Dec
LHR20:25London Heathrow
32h 05m
1 stop
SYD15:30Sydney Kingsford Smith
15 Dec
SYD20:40Sydney Kingsford Smith
30h 15m
1 stop
LHR15:55London Heathrow
$1,442
Find similar
Air China
7 Dec
LGW11:35London Gatwick
40h 55m
1 stop
SYD15:30Sydney Kingsford Smith
24 Dec
SYD20:40Sydney Kingsford Smith
43h 55m
1 stop
LGW05:35London Gatwick
$1,450
Find similar

China Southern flights from London to Sydney

Our best China Southern deals on London to Sydney flight tickets
China Southern
25 Apr
LHR22:10London Heathrow
25h 15m
1 stop
SYD08:25Sydney Kingsford Smith
16 May
SYD21:45Sydney Kingsford Smith
30h 15m
1 stop
LHR19:00London Heathrow
$1,443
Find similar
China Southern
29 Nov
LGW20:20London Gatwick
37h 00m
2 stops
SYD20:20Sydney Kingsford Smith
6 Dec
SYD22:00Sydney Kingsford Smith
43h 25m
1 stop
LGW06:25London Gatwick
$1,445
Find similar
China Southern
14 Apr
LHR21:00London Heathrow
37h 40m
2 stops
SYD19:40Sydney Kingsford Smith
19 May
SYD10:05Sydney Kingsford Smith
39h 10m
2 stops
LHR16:15London Heathrow
$1,446
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 78,305 searches. Data last updated 3 November 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

LGW - SYD

LGWSYD

London Gatwick

Fri 26/12

11:35-15:30

1 stop40h 55m

Sydney Kingsford Smith

Wed 4/2

20:40-05:35

1 stop43h 55m

$1,440

LondonSydney

STN - SYD

STNSYD

London Stansted

Thu 12/3

08:05-08:05

3 stops37h 00m

Sydney Kingsford Smith

Sat 21/3

21:15-09:50

2 stops47h 35m

$1,440

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 25/4

22:10-08:25

1 stop25h 15m

Sydney Kingsford Smith

Sat 16/5

21:45-19:00

1 stop30h 15m

$1,443

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 29/12

21:00-11:00

3 stops51h 00m

Sydney Kingsford Smith

Mon 26/1

21:30-17:30

1 stop31h 00m

$1,445

LondonSydney

LGW - SYD

LGWSYD

London Gatwick

Sat 29/11

20:20-20:20

2 stops37h 00m

Sydney Kingsford Smith

Sat 6/12

22:00-06:25

1 stop43h 25m

$1,445

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 18/11

21:00-11:00

3 stops51h 00m

Sydney Kingsford Smith

Tue 25/11

12:20-17:30

2 stops40h 10m

$1,451

LondonSydney

LCY - SYD

LCYSYD

London City

Tue 21/4

19:20-06:10

2 stops25h 50m

Sydney Kingsford Smith

Sun 24/5

11:00-07:35

2 stops29h 35m

$1,828

LondonSydney

LCY - SYD

LCYSYD

London City

Mon 2/3

19:10-07:15

2 stops25h 05m

Sydney Kingsford Smith

Thu 19/3

15:15-08:45

2 stops28h 30m

$1,909

LondonSydney

LCY - SYD

LCYSYD

London City

Wed 12/11

17:05-06:35

2 stops26h 30m

Sydney Kingsford Smith

Sun 18/1

15:55-09:30

2 stops28h 35m

$2,082

LondonSydney

LCY - SYD

LCYSYD

London City

Wed 12/11

17:05-06:35

2 stops26h 30m

Sydney Kingsford Smith

Mon 1/12

15:55-09:30

2 stops28h 35m

$2,149

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 May is, on average, the cheapest month to fly to Sydney from London, with most prices found around $1,613. If you aren’t able to travel to Sydney during the month of May, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,715.

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

Our data shows that Tuesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $2,146. The most expensive day to fly to Sydney is Saturday, with ticket prices averaging around $3,079.

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

According to our data, the cheapest time of day to fly to Sydney is in the afternoon. momondo users have found flights departing from London to Sydney in the afternoon for as low as $1,926. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $2,528 on average. Flights to Sydney from London in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 $2,038 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 $1,737 on momondo.

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

There are 2 cabin classes 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 12% 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 November 2025, prices for London to Sydney flights are approximately 10% 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

$1,603

Fastest flight time

22h 55m

Direct flights

Every day

Airports in Sydney

1 airport
The best one-way flight to Sydney from London in the past 72 hours is $1,603. The best return flight deal from London to Sydney found on momondo in the last 72 hours is $2,066.
The fastest flight from London to Sydney takes 22h 55m
Direct flights go from London to Sydney every day.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)
Search flight deals

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

    A flight from London to Sydney Kingsford Smith will travel around 16983.0 km. A reasonable flight in good conditions will take 22h 30m.

  • 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 refresh 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London to Sydney?

  • What is the most popular airline 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 EasternPriceFrom $1,091Free cancellationRating
7.2
174 reviews
Search China Eastern flights
China SouthernPriceFrom $1,105Free cancellationRating
7.5
119 reviews
Search China Southern flights
Air ChinaPriceFrom $1,184Free cancellationRating
7.1
122 reviews
Search Air China flights
Air IndiaPriceFrom $1,502Free cancellationRating
5.5
2,940 reviews
Search Air India flights
Malaysia AirlinesPriceFrom $1,537Free cancellationRating
7.3
278 reviews
Search Malaysia Airlines flights
China AirlinesPriceFrom $1,566Free cancellationRating
8.3
776 reviews
Search China Airlines flights
Etihad AirwaysPriceFrom $1,571Free cancellationRating
7.4
1,284 reviews
Search Etihad Airways flights
Cathay PacificPriceFrom $1,664Free cancellationRating
7.6
1,048 reviews
Search Cathay Pacific flights
British AirwaysPriceFrom $1,678Free cancellationRating
6.7
7,494 reviews
Search British Airways flights
EmiratesPriceFrom $1,732Free cancellationRating
8.1
3,400 reviews
Search Emirates flights

  • Qantas Airways Flights From London to Sydney

    The lowest priced Qantas Airways flight from London to Sydney from the last 72 hours was $1,942. Generally, Qantas Airways has 7 flights on this route every week with an average price of $2,774. Qantas Airways is rated 7.5/10 by our users.

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Terrigal
Penrith
Katoomba
Lithgow
Leura
Manly
Bondi Beach
Coogee
Randwick
Cronulla
Charlestown
Newport
Swansea

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Sydney . Millions of users trust and use momondo every year so you are in good hands.

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?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Sydney.

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

Of course. momondo tracks the price of London to Sydney flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Sydney trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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