Sydney

$623+ Cheap flights from Heathrow (LHR) 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
Aug 3 — Aug 101
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Cheapflights Tip: The best prices from London Heathrow to Sydney Kingsford Smith are usually found in March or May, booked 90 days in advance, depart on a Wednesday or Monday and return on a Monday

Cheap flight deals from Heathrow to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 July 29, 2025.

Round-trip from

$1,010
(FlightHub)

One-way from

$623
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,711
From London Heathrow to Sydney Kingsford Smith
One-way flight from London Heathrow to Sydney Kingsford Smith
Highest demand for flights based on searches. 10% potential increase in price ($160 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
Average for round-trip flights in July 2025

Find flight deals from Heathrow to Sydney

Cheapest flights from Heathrow to Sydney
Explore the most affordable flight options available from Heathrow to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This FlightHub deal was found by Cheapflights users on 7/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:15 pmLHR - SYD
2 stops28h 10mChina Southern
Sun 10/1910:15 pmSYD - LHR
2 stops53h 50mChina Southern
Deal found 7/27$1,010
This Air China deal was found by Cheapflights users on 7/29. 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.
Fri 11/215:40 pmLHR - SYD
1 stop34h 50mAir China
Wed 1/148:40 pmSYD - LHR
1 stop30h 15mAir China
Deal found 7/29$1,013
This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1210:00 pmLHR - SYD
3 stops39h 20mMultiple Airlines
Sat 9/209:20 pmSYD - LHR
3 stops55h 10mMultiple Airlines
Deal found 7/28$1,053
This Lufthansa deal was found by Cheapflights users on 7/27. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:35 amLHR - SYD
2 stops38h 05mLufthansa
Sun 1/253:35 pmSYD - LHR
2 stops29h 50mLufthansa
Deal found 7/27$1,066
This SWISS deal was found by Cheapflights users on 7/27. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/35:10 pmLHR - SYD
2 stops31h 40mSWISS
Thu 11/134:10 pmSYD - LHR
2 stops31h 50mSWISS
Deal found 7/27$1,070
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/109:00 pmLHR - SYD
1 stop26h 00mChina Eastern
Sat 11/2212:00 pmSYD - LHR
1 stop40h 30mChina Eastern
Deal found 7/29$1,102
This Cathay Pacific deal was found by Cheapflights users on 7/29. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:05 pmLHR - SYD
1 stop26h 55mCathay Pacific
Tue 11/1810:20 pmSYD - LHR
1 stop30h 00mCathay Pacific
Deal found 7/29$1,131
This China Airlines deal was found by Cheapflights users on 7/29. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/299:15 pmLHR - SYD
1 stop28h 00mChina Airlines
Tue 12/210:10 pmSYD - LHR
1 stop29h 45mChina Airlines
Deal found 7/29$1,157

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow 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 July 29, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Sydney that are best for you.

Fly from

Heathrow

Fly to

Sydney

Route

Depart

Return

Price

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 10/15

7:15 pm-9:25 am

2 stops28h 10m

Sydney Kingsford Smith

Sun 10/19

10:15 pm-6:05 pm

2 stops53h 50m

$1,010

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 11/21

5:40 pm-3:30 pm

1 stop34h 50m

Sydney Kingsford Smith

Wed 1/14

8:40 pm-3:55 pm

1 stop30h 15m

$1,013

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 9/12

10:00 pm-10:20 pm

3 stops39h 20m

Sydney Kingsford Smith

Sat 9/20

9:20 pm-7:30 pm

3 stops55h 10m

$1,053

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 12/2

6:35 am-7:40 am

2 stops38h 05m

Sydney Kingsford Smith

Sun 1/25

3:35 pm-10:25 am

2 stops29h 50m

$1,066

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 11/3

5:10 pm-11:50 am

2 stops31h 40m

Sydney Kingsford Smith

Thu 11/13

4:10 pm-1:00 pm

2 stops31h 50m

$1,070

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 11/10

9:00 pm-10:00 am

1 stop26h 00m

Sydney Kingsford Smith

Sat 11/22

12:00 pm-5:30 pm

1 stop40h 30m

$1,102

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 10/29

10:05 pm-12:00 pm

1 stop26h 55m

Sydney Kingsford Smith

Tue 11/18

10:20 pm-5:20 pm

1 stop30h 00m

$1,131

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 10/29

9:15 pm-12:15 pm

1 stop28h 00m

Sydney Kingsford Smith

Tue 12/2

10:10 pm-4:55 pm

1 stop29h 45m

$1,157

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 8/24

6:45 am-9:20 am

2 stops41h 35m

$623

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 9/1

9:20 pm-12:35 pm

1 stop30h 15m

$643

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 17 results
1
2

Best time to book a flight from Heathrow to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Heathrow 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 Heathrow Airport to Sydney

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

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Sydney. Price data was last updated on July 25, 2025.

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Sydney, you should look to book at least 90 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of $1,028). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of $1,619). 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 LHR to SYD?

Find hourly flight availability from Heathrow 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 July 29, 2025.

It’s typically best to fly out from London Heathrow Airport to Sydney in the afternoon. Doing so could potentially save you 19% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from London Heathrow Airport to Sydney?

Use this chart to determine the cheapest time to fly round-trip from Heathrow to Sydney. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their London Heathrow Airport to Sydney flight should consider departing on Sunday evenings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London Heathrow Airport to Sydney

Explore weekly flight availability from Heathrow 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 July 29, 2025.

The most flights from LHR 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 Heathrow Airport to Sydney?

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

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

Guangzhou (CAN) – chosen by Cheapflights users on 25% of 1-stop itineraries from London Heathrow Airport to Sydney on Cheapflights.

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

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

Beijing (PEK) is the most affordable 1-stop option, with an average round-trip price of $751.

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

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

Flights via Kuala Lumpur (KUL) have the shortest average one-way travel time for 1-stop routes: 10h 20m.

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

Average layover duration for 1-stop one-way flights from London Heathrow Airport 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 July 29, 2025.
Read reviews from past customers who have flown China Airlines, Cathay Pacific, and China Southern from London Heathrow Airport to Sydney. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.0

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

Comfort

8.0

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

Comfort

8.0

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

Comfort

8.0

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

Comfort

8.0

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

Comfort

8.0

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

Related info for your journey

Find useful and relevant information for your journey from Heathrow 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 Heathrow?

    Sydney Kingsford Smith (SYD) is the airport you will fly into if you book a flight from London Heathrow to Sydney. You should not have trouble finding flights to Kingsford Smith from London Heathrow; the airport handles an average of 3 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 9 airlines have flights to the Sydney airport from London Heathrow. It is only a 4.6 mi journey from Kingsford Smith (SYD) to Sydney’s city center.

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

    Currently priced at $1,010, China Southern will fly you from London Heathrow Airport to Sydney and back. In addition to China Southern, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air China and Lufthansa - these airlines can fly you to your destination from $1,013 and $1,066, respectively. These flights start at 23% lower than the current average price 3 months from now.

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

    $643 is the cheapest one-way deal found within the past few days, from China Eastern. You may also be able to find cheap deals on Tianjin Airlines and Malaysia Airlines, with prices starting from $646 and $690, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Sydney?

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of $1,028). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of $1,619). 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
Wollongong
Parramatta
Manly
Coogee

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Alternative routes for Heathrow to Sydney

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from Heathrow to Sydney

Discover the top 9 airlines that operate flights from Heathrow 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$747Average$951FlexibilityNo cancel feeOn-time67%
China SouthernCheapest$766Average$946FlexibilityNo cancel feeOn-time69%
China EasternCheapest$866Average$1,220FlexibilityNo cancel feeOn-time62%
Etihad AirwaysCheapest$1,029Average$1,532FlexibilityNo cancel feeOn-time75%
Cathay PacificCheapest$1,115Average$1,544FlexibilityNo cancel feeOn-time72%
Qantas AirwaysCheapest$1,120Average$1,438FlexibilityNo cancel feeOn-time74%
Malaysia AirlinesCheapest$1,188Average$1,527FlexibilityNo cancel feeOn-time67%
Singapore AirlinesCheapest$1,307Average$1,677FlexibilityNo cancel feeOn-time81%
British AirwaysCheapest$1,326Average$1,490FlexibilityNo cancel feeOn-time70%

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