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Cheap flights from London to Sydney from $648

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 10/9. 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

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Cheap return flights

China Southern Logo
20:20 - 20:20LGW-SYD
37h 00m2 stops
China Southern Logo
22:00 - 17:20SYD-LGW
30h 20m2 stops
$1,066China Southern
Find Deal
Tue, 28 Oct - Mon, 10 Nov
Air China Logo
20:25 - 15:30LHR-SYD
32h 05m1 stop
Air China Logo
20:40 - 15:55SYD-LHR
30h 15m1 stop
$1,179Air China
Find Deal
Sun, 9 Nov - Sun, 23 Nov
China Eastern Logo
21:00 - 13:35LHR-SYD
29h 35m1 stop
China Eastern Logo
21:30 - 17:30SYD-LHR
31h 00m1 stop
$1,271China Eastern
Find Deal
Tue, 11 Nov - Tue, 18 Nov
China Eastern Logo
21:00 - 10:00LHR-SYD
26h 00m1 stop
China Eastern Logo
21:30 - 17:30SYD-LHR
31h 00m1 stop
$1,288China Eastern
Find Deal
Tue, 4 Nov - Tue, 18 Nov
Air India Logo
09:45 - 18:00LHR-SYD
23h 15m1 stop
Air India Logo
19:30 - 20:00SYD-LHR
33h 30m1 stop
$1,398Air India
Find Deal
Mon, 11 Aug - Mon, 18 Aug
Air India Logo
09:45 - 18:00LHR-SYD
23h 15m1 stop
Air India Logo
19:30 - 11:30SYD-LHR
25h 00m1 stop
$1,404Air India
Find Deal
Mon, 4 Aug - Sun, 17 Aug
SWISS Logo
17:45 - 11:50LCY-SYD
31h 05m2 stops
SWISS Logo
16:10 - 17:05SYD-LCY
35h 55m2 stops
$1,684SWISS
Find Deal
Wed, 29 Oct - Wed, 12 Nov
SWISS Logo
17:45 - 11:50LCY-SYD
31h 05m2 stops
SWISS Logo
15:15 - 11:40SYD-LCY
31h 25m2 stops
$1,710SWISS
Find Deal
Tue, 28 Oct - Fri, 14 Nov
Emirates Logo
20:15 - 18:35STN-SYD
35h 20m1 stop
Emirates Logo
21:10 - 17:45SYD-STN
31h 35m1 stop
$1,963Emirates
Find Deal
Mon, 3 Nov - Thu, 13 Nov
Emirates Logo
20:15 - 18:35STN-SYD
35h 20m1 stop
Emirates Logo
21:10 - 17:45SYD-STN
31h 35m1 stop
$2,040Emirates
Find Deal
Sat, 1 Nov - Sat, 8 Nov

China Southern flights from London to Sydney

Our best China Southern deals on London to Sydney flight tickets
China Southern
28 Oct
LGW20:20London Gatwick
37h 00m
2 stops
SYD20:20Sydney Kingsford Smith
10 Nov
SYD22:00Sydney Kingsford Smith
30h 20m
2 stops
LGW17:20London Gatwick
China Southern
3 Nov
LHR22:00London Heathrow
35h 20m
1 stop
SYD20:20Sydney Kingsford Smith
13 Nov
SYD22:00Sydney Kingsford Smith
30h 55m
2 stops
LHR17:55London Heathrow
China Southern
30 Oct
LHR21:30London Heathrow
35h 50m
2 stops
SYD20:20Sydney Kingsford Smith
10 Nov
SYD22:00Sydney Kingsford Smith
31h 15m
1 stop
LHR18:15London Heathrow

Air China flights from London to Sydney

Our best Air China deals on London to Sydney flight tickets
Air China
9 Nov
LHR20:25London Heathrow
32h 05m
1 stop
SYD15:30Sydney Kingsford Smith
23 Nov
SYD20:40Sydney Kingsford Smith
30h 15m
1 stop
LHR15:55London Heathrow
Air China
3 Oct
LHR20:25London Heathrow
33h 25m
1 stop
SYD14:50Sydney Kingsford Smith
19 Oct
SYD20:40Sydney Kingsford Smith
33h 50m
1 stop
LHR20:30London Heathrow
Air China
7 Sept
LGW12:35London Gatwick
41h 15m
1 stop
SYD14:50Sydney Kingsford Smith
4 Oct
SYD19:40Sydney Kingsford Smith
43h 55m
1 stop
LGW06:35London Gatwick

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 $1,638. 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 $1,685.

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 $2,148. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $5,758.

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 $1,928. 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 $2,503 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 $2,032 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 $1,665 on momondo.

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

There are 3 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.

How have London to Sydney flight prices changed over time?

As of June 2025, prices for London to Sydney flights are approximately 12% 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

$648

Fastest flight time

21h 25m

Direct flights

Every day

Airports in Sydney

1 airport
The best one-way flight to Sydney from London in the past 72 hours is $648. The best return flight deal from London to Sydney found on momondo in the last 72 hours is $1,066.
The fastest flight from London to Sydney takes 21h 25m
Direct flights go from London to Sydney every day.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

  • 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 21h 25m.

  • 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
Air ChinaPriceFrom $621Free cancellationRating
7.2
92 reviews
Search Air China flights
China EasternPriceFrom $1,092Free cancellationRating
7.1
152 reviews
Search China Eastern flights
China SouthernPriceFrom $1,106Free cancellationRating
7.5
99 reviews
Search China Southern flights
Air IndiaPriceFrom $1,530Free cancellationRating
5.5
2,921 reviews
Search Air India flights
Malaysia AirlinesPriceFrom $1,539Free cancellationRating
7.4
263 reviews
Search Malaysia Airlines flights
China AirlinesPriceFrom $1,567Free cancellationRating
8.3
745 reviews
Search China Airlines flights
Etihad AirwaysPriceFrom $1,569Free cancellationRating
7.4
1,220 reviews
Search Etihad Airways flights
Cathay PacificPriceFrom $1,666Free cancellationRating
7.6
919 reviews
Search Cathay Pacific flights
British AirwaysPriceFrom $1,679Free cancellationRating
6.6
7,075 reviews
Search British Airways flights
EmiratesPriceFrom $1,734Free cancellationRating
8.1
3,278 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 $1,336. Generally, Qantas Airways has 7 flights on this route every week with an average price of $1,821. 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
Lithgow
Katoomba
Penrith
Leura
Manly
Coogee
Bondi Beach
Cronulla
Randwick
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.


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1 adult
Thu 3/7
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