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$631+ Cheap flights from London (LON) to Sydney (SYD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SYD
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
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Cheapflights Tip: The best prices from London to Sydney Kingsford Smith are usually found in May or June, booked 57 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from London to Sydney

Cheapest flights from London to Sydney
Explore the most affordable flight options available from London to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 16, 2025.

This China Southern deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Southern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:00 pmLHR - SYD
1 stop28h 35mChina Southern
Sat 1/178:10 amSYD - LHR
2 stops40h 50mChina Southern
Deal found 12/15$1,142
This China Southern deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Southern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/259:55 amLGW - SYD
1 stop36h 30mChina Southern
Fri 1/1611:25 amSYD - LGW
2 stops40h 55mChina Southern
Deal found 12/16$1,217
This Air China deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/275:40 pmLHR - SYD
1 stop34h 50mAir China
Wed 1/148:40 pmSYD - LHR
1 stop32h 10mAir China
Deal found 12/16$1,322
This Kiwi.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:00 amLGW - SYD
1 stop23h 20mMultiple Airlines
Sun 1/119:50 pmSYD - LGW
2 stops48h 50mMultiple Airlines
Deal found 12/16$1,434
This Sichuan Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sichuan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:35 pmLHR - SYD
2 stops53h 05mSichuan Airlines
Fri 1/239:25 pmSYD - LHR
2 stops47h 30mSichuan Airlines
Deal found 12/15$1,475
This Sichuan Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sichuan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2710:35 pmLHR - SYD
2 stops53h 05mSichuan Airlines
Fri 1/169:25 pmSYD - LHR
2 stops52h 30mSichuan Airlines
Deal found 12/16$1,476
This Kiwi.com deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/278:25 pmLHR - SYD
1 stop32h 05mMultiple Airlines
Sun 1/114:35 pmSYD - LHR
1 stop30h 30mMultiple Airlines
Deal found 12/15$1,502
This Mytrip deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2712:00 pmLGW - SYD
3 stops36h 00mMultiple Airlines
Sun 1/119:50 pmSYD - LGW
3 stops37h 05mMultiple Airlines
Deal found 12/15$1,508
This Sichuan Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sichuan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/168:00 pmLHR - SYD
2 stops55h 40mSichuan Airlines
Fri 1/169:25 pmSYD - LHR
2 stops52h 30mSichuan Airlines
Deal found 12/15$1,511
This Sichuan Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sichuan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:00 pmLHR - SYD
2 stops57h 40mSichuan Airlines
Fri 1/169:25 pmSYD - LHR
2 stops52h 30mSichuan Airlines
Deal found 12/16$1,521
This Turkish Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:25 amLGW - SYD
2 stops25h 55mTurkish Airlines
Mon 3/29:15 pmSYD - LGW
2 stops29h 55mTurkish Airlines
Deal found 12/16$1,679
This Qatar Airways deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:40 amLGW - SYD
1 stop23h 10mQatar Airways
Sat 1/173:50 pmSYD - LGW
1 stop25h 05mQatar Airways
Deal found 12/16$1,881

Find flight deals from London to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 16, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$1,034
(China Southern)

One-way from

$631
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$1,769
Provider with most accurate pricing for London (LON)-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Sydney Kingsford Smith flights.
Search Deals
From London (LON) to Sydney Kingsford Smith
Search Deals
One-way flight from London (LON) to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($133 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize 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, Cheapflights users made 2,558,603 searches. Data last updated December 16, 2025.
Use the filters below to find and compare flights from London to Sydney that are best for you.

Fly from

London

Fly to

Sydney

Route

Depart

Return

Price

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 2/17

8:45 am-7:15 pm

1 stop23h 30m

Sydney Kingsford Smith

Tue 2/24

8:45 pm-8:30 pm

1 stop34h 45m

$1,066

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 6/1

9:45 am-6:25 pm

1 stop23h 40m

Sydney Kingsford Smith

Thu 8/6

8:00 pm-11:30 am

1 stop24h 30m

$1,074

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 1/31

9:00 pm-1:35 pm

1 stop29h 35m

Sydney Kingsford Smith

Sat 2/7

1:30 pm-5:30 pm

3 stops39h 00m

$1,131

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 2/8

1:45 pm-6:20 am

1 stop29h 35m

Sydney Kingsford Smith

Wed 3/4

12:10 pm-7:25 am

1 stop30h 15m

$1,288

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 1/31

1:45 pm-6:20 am

1 stop29h 35m

Sydney Kingsford Smith

Mon 2/23

11:50 am-7:30 am

1 stop30h 40m

$1,288

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 2/3

11:35 am-6:20 am

2 stops31h 45m

Sydney Kingsford Smith

Fri 2/20

12:10 pm-7:25 am

1 stop30h 15m

$1,288

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 2/7

1:45 pm-6:20 am

1 stop29h 35m

Sydney Kingsford Smith

Sun 2/15

12:10 pm-6:20 am

2 stops29h 10m

$1,288

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 1/30

10:25 am-6:20 am

2 stops32h 55m

Sydney Kingsford Smith

Sun 2/22

2:00 pm-7:25 am

1 stop28h 25m

$1,288

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 2/12

3:20 pm-9:05 am

1 stop30h 45m

Sydney Kingsford Smith

Sat 3/7

11:20 am-5:55 am

2 stops29h 35m

$1,288

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 2/1

11:35 am-6:20 am

2 stops31h 45m

Sydney Kingsford Smith

Fri 2/20

11:50 am-7:30 am

1 stop30h 40m

$1,288

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 44 results
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Compare providers for flights from London to Sydney

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to Sydney in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London-Sydney flights, users find the pricing of Gotogate to be most consistent on Cheapflights vs. Gotogate Users can find the same prices on London-Sydney flight deals on Cheapflights vs. Gotogate >95% of the time. Price accuracy is based on data collected from London-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London-Sydney flights, Cheapflights users trust Gotogate the most. Gotogate has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from London to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from London with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Sydney

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

Use this chart to determine the optimal time to book a round-trip flight from London to Sydney. Price data was last updated on December 12, 2025.

Booking 57 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Sydney. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London to Sydney?

Currently, February is the cheapest month in which you can book a flight from London to Sydney (average of $447). Flying from London to Sydney in January is currently the most expensive (average of $1,013). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to SYD?

Find hourly flight availability from London to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 16, 2025.

A simple way to save on the total cost of your ticket is to fly from London to Sydney in the afternoon. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight at noon.

Weekly flight availability from London to Sydney

Explore weekly flight availability from London to Sydney. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 16, 2025.

The most flights from LON to SYD are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost to fly round-trip from London to Sydney?

What’s the top layover airport for flights from London to Sydney?

Share of 1-stop round-trip flights from London to Sydney chosen by Cheapflights users in the past 12 months, using the same layover each way.

Abu Dhabi (AUH) – chosen by Cheapflights users on 25% of 1-stop itineraries from London to Sydney on Cheapflights.

What’s the cheapest layover airport for flights from London to Sydney?

Average round-trip fare for 1-stop flights from London to Sydney, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Guangzhou (CAN) is the most affordable 1-stop option, with an average round-trip price of $974.

What’s the fastest layover option from London to Sydney?

Shortest average travel time for 1-stop one-way flights from London to Sydney, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Abu Dhabi (AUH) have the shortest average one-way travel time for 1-stop routes: 22h 00m.

Which airport typically offers the quickest layover for flights from London to Sydney?

Average layover duration for 1-stop one-way flights from London to Sydney, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Dubai (DXB) offer the fastest connection on this route, with an average layover time of 1h 43m.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated December 16, 2025.
Read through reviews of airlines operating flights from London to Sydney, such as Emirates, Cathay Pacific, and China Southern. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very good
3,440 reviews

Food

7.9

Entertainment

8.2

Crew

8.3

Overall

8.1

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

DXB - MAN

A380 is best airplane in the world for long haul flights. And Emirates one of the top airlines.
Emirates
8.1
Very good
3,440 reviews
Emirates
8.1
Very good
3,440 reviews

Food

7.9

Entertainment

8.2

Crew

8.3

Overall

8.1

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

DXB - MAN

A380 is best airplane in the world for long haul flights. And Emirates one of the top airlines.
Cathay Pacific
7.6
Good
1,095 reviews
Emirates
8.1
Very good
3,440 reviews

Food

7.9

Entertainment

8.2

Crew

8.3

Overall

8.1

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

DXB - MAN

A380 is best airplane in the world for long haul flights. And Emirates one of the top airlines.
China Southern
7.5
Good
122 reviews
Emirates
8.1
Very good
3,440 reviews

Food

7.9

Entertainment

8.2

Crew

8.3

Overall

8.1

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

DXB - MAN

A380 is best airplane in the world for long haul flights. And Emirates one of the top airlines.
Etihad Airways
7.4
Good
1,332 reviews
Emirates
8.1
Very good
3,440 reviews

Food

7.9

Entertainment

8.2

Crew

8.3

Overall

8.1

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

DXB - MAN

A380 is best airplane in the world for long haul flights. And Emirates one of the top airlines.
China Eastern
7.2
Good
178 reviews
Emirates
8.1
Very good
3,440 reviews

Food

7.9

Entertainment

8.2

Crew

8.3

Overall

8.1

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

DXB - MAN

A380 is best airplane in the world for long haul flights. And Emirates one of the top airlines.

Related info for your journey

Find useful and relevant information for your journey from London to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sydney from London?

    Most people fly into Sydney Kingsford Smith (SYD) if they book a flight to Sydney from London. On average, Kingsford Smith has 3 inbound flights from London per day from 10 airlines. Sydney Kingsford Smith is conveniently located just 4.6 mi from Sydney’s city center.

  • How long is the flight from London to Sydney?

    Departing from London to Sydney will take you 23h 30m. There are 10568 mi between London and Sydney. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from London to Sydney round-trip?

    Currently priced at $757, Etihad Airways will fly you from London to Sydney and back. In addition to Etihad Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from China Southern and Air India - these airlines can fly you to your destination from $792 and $852, respectively. These flights start at 41% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from London to Sydney one-way?

    The cheapest airline one-way is Air China, with whom users have recently found tickets for as low as $437. However, be on the lookout for offers from Etihad Airways and Qatar Airways, as they are both options that can get you from London to Sydney for a low price.

  • Can I find deals for flights from London to Sydney that include hotel bookings?

    Yes. In addition to deals on London to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Sydney.

  • Can I find deals for business class flights from London to Sydney?

    Yes. Cheapflights offers flight deals from London to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London to Sydney?

    Currently, February is the cheapest month in which you can book a flight from London to Sydney (average of $447). Flying from London to Sydney in January is currently the most expensive (average of $1,013). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly
Coogee

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Sydney flights
Gatwick to Sydney flights

Top 10 airlines flying from London to Sydney

Discover the top 10 airlines that operate flights from London to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$757Average$1,381FlexibilityNo cancel feeOn-time75%
China SouthernCheapest$792Average$989FlexibilityNo cancel feeOn-time69%
Air IndiaCheapest$852Average$1,448FlexibilityNo cancel feeOn-timeN/A
China EasternCheapest$866Average$1,204FlexibilityNo cancel feeOn-time62%
Singapore AirlinesCheapest$1,015Average$1,677FlexibilityNo cancel feeOn-time81%
Cathay PacificCheapest$1,115Average$1,306FlexibilityNo cancel feeOn-time72%
EmiratesCheapest$1,121Average$1,433FlexibilityNo cancel feeOn-time75%
Malaysia AirlinesCheapest$1,188Average$1,484FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$1,210Average$1,533FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$1,246Average$1,352FlexibilityNo cancel feeOn-time71%

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