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$635+ 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
ene. 3 — ene. 101
sáb. 1/3
sáb. 1/10
1 adult, Economy
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Cheapflights Tip: The best prices from London Heathrow to Sydney Kingsford Smith are usually found in May or March, booked 90 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap 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 diciembre 4, 2025.

This Air China deal was found by Cheapflights users on 12/2. 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.
mar. 12/28:25 pmLHR - SYD
1 stop32h 05mAir China
mié. 12/108:40 pmSYD - LHR
1 stop32h 10mAir China
Deal found 12/2$1,091
This China Airlines deal was found by Cheapflights users on 12/3. 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.
mié. 12/39:15 pmLHR - SYD
1 stop28h 00mChina Airlines
lun. 12/810:10 pmSYD - LHR
1 stop29h 45mChina Airlines
Deal found 12/3$1,154
This China Southern deal was found by Cheapflights users on 12/3. 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.
jue. 12/2510:00 pmLHR - SYD
1 stop28h 35mChina Southern
sáb. 1/178:10 amSYD - LHR
1 stop45h 25mChina Southern
Deal found 12/3$1,239
This China Southern deal was found by Cheapflights users on 12/2. 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.
vie. 12/59:30 pmLHR - SYD
2 stops46h 05mChina Southern
vie. 12/2611:25 amSYD - LHR
1 stop42h 10mChina Southern
Deal found 12/2$1,243
This China Southern deal was found by Cheapflights users on 12/2. 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.
mié. 12/3110:00 pmLHR - SYD
1 stop24h 25mChina Southern
vie. 1/163:15 pmSYD - LHR
2 stops57h 45mChina Southern
Deal found 12/2$1,247
This China Southern deal was found by Cheapflights users on 12/2. 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.
mié. 12/319:30 pmLHR - SYD
2 stops29h 05mChina Southern
mar. 1/1311:25 amSYD - LHR
2 stops37h 35mChina Southern
Deal found 12/2$1,254
This United Airlines deal was found by Cheapflights users on 12/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/912:05 pmLHR - SYD
1 stop31h 55mUnited Airlines
dom. 2/111:20 amSYD - LHR
2 stops30h 00mUnited Airlines
Deal found 12/2$1,275
This Booking.com deal was found by Cheapflights users on 12/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/59:00 pmLHR - SYD
2 stops31h 20mHainan Airlines
dom. 12/217:40 pmSYD - LHR
2 stops33h 15mHainan Airlines
Deal found 12/2$1,285

Find 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 diciembre 4, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$1,043
(Kiwi.com)

One-way from

$635
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$1,751
Provider with most accurate pricing for London Heathrow-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Sydney Kingsford Smith flights.
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From London Heathrow to Sydney Kingsford Smith
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One-way flight from London Heathrow to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($143 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 diciembre 4, 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

mié. 3/4

1:55 pm-5:55 pm

1 stop41h 00m

Sydney Kingsford Smith

sáb. 3/14

9:45 pm-6:10 pm

1 stop31h 25m

$1,129

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

mié. 3/11

11:35 am-6:20 am

2 stops31h 45m

Sydney Kingsford Smith

sáb. 3/28

11:20 am-8:40 am

2 stops32h 20m

$1,274

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

mar. 2/17

12:05 pm-7:00 am

1 stop31h 55m

Sydney Kingsford Smith

mar. 2/24

2:00 pm-7:25 am

1 stop28h 25m

$1,279

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

jue. 1/22

3:20 pm-9:15 am

2 stops30h 55m

Sydney Kingsford Smith

mar. 1/27

2:00 pm-7:55 am

2 stops28h 55m

$1,280

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

mié. 2/11

12:05 pm-7:00 am

1 stop31h 55m

Sydney Kingsford Smith

sáb. 2/21

11:50 am-7:30 am

1 stop30h 40m

$1,280

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

mié. 4/1

4:15 pm-7:55 am

1 stop29h 40m

Sydney Kingsford Smith

mié. 4/8

9:30 am-9:40 am

2 stops33h 10m

$1,290

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

mar. 3/10

6:35 am-7:20 pm

2 stops25h 45m

Sydney Kingsford Smith

sáb. 3/14

9:15 pm-9:05 pm

2 stops34h 50m

$1,369

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

mar. 3/10

6:35 am-7:20 pm

2 stops25h 45m

Sydney Kingsford Smith

sáb. 3/28

9:15 pm-3:55 pm

2 stops29h 40m

$1,392

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

mié. 12/31

6:35 am-7:20 pm

2 stops25h 45m

Sydney Kingsford Smith

jue. 1/15

12:00 pm-4:10 pm

2 stops39h 10m

$1,399

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

mar. 2/17

5:05 pm-6:35 am

2 stops26h 30m

Sydney Kingsford Smith

mar. 2/24

3:55 pm-10:30 am

2 stops29h 35m

$1,483

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 22 results
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Compare providers for flights from Heathrow 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 Heathrow to Sydney in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*1 star

*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 Heathrow Airport-Sydney flights, users find the pricing of Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on London Heathrow Airport-Sydney flight deals on Cheapflights vs. Mytrip >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Sydney flights, Cheapflights users trust Mytrip the most. Mytrip 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 Heathrow Airport-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 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 November 28, 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of $687). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of $1,110). 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 diciembre 4, 2025.

It’s typically best to fly out from London Heathrow Airport to Sydney in the afternoon. Doing so could potentially save you 17% on the flight price compared to flying at noon, which is usually more expensive.

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

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 diciembre 4, 2025.
Read reviews from past customers who have flown Singapore 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.
Singapore Airlines
8.1
Very good
1,411 reviews

Food

7.8

Crew

8.6

Boarding

8.3

Overall

8.1

Entertainment

8.0

Comfort

8.0

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Singapore Airlines
8.1
Very good
1,411 reviews
Singapore Airlines
8.1
Very good
1,411 reviews

Food

7.8

Crew

8.6

Boarding

8.3

Overall

8.1

Entertainment

8.0

Comfort

8.0

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Cathay Pacific
7.6
Good
1,084 reviews
Singapore Airlines
8.1
Very good
1,411 reviews

Food

7.8

Crew

8.6

Boarding

8.3

Overall

8.1

Entertainment

8.0

Comfort

8.0

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
China Southern
7.5
Good
121 reviews
Singapore Airlines
8.1
Very good
1,411 reviews

Food

7.8

Crew

8.6

Boarding

8.3

Overall

8.1

Entertainment

8.0

Comfort

8.0

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Etihad Airways
7.4
Good
1,329 reviews
Singapore Airlines
8.1
Very good
1,411 reviews

Food

7.8

Crew

8.6

Boarding

8.3

Overall

8.1

Entertainment

8.0

Comfort

8.0

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
British Airways
6.7
Okay
7,562 reviews
Singapore Airlines
8.1
Very good
1,411 reviews

Food

7.8

Crew

8.6

Boarding

8.3

Overall

8.1

Entertainment

8.0

Comfort

8.0

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

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 11 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.

  • How long is the flight from London Heathrow Airport to Sydney?

    Airlines like Etihad Airways and United Airlines fly from London Heathrow Airport to Sydney in about 31h 45m. The time it takes to get you to your destination can typically vary by up to 9h 15m. London Heathrow Airport and Sydney are separated by a distance of 10568 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $757, Etihad Airways will fly you from London Heathrow Airport 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 China Eastern - these airlines can fly you to your destination from $792 and $866, respectively. These flights start at 43% 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?

    $437 is the cheapest one-way deal found within the past few days, from Air China. You may also be able to find cheap deals on Etihad Airways and Qatar Airways, with prices starting from $603 and $665, 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of $687). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of $1,110). 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 Heathrow to Sydney

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

Top 10 airlines flying from Heathrow to Sydney

Discover the top 10 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 diciembre 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$757Average$1,379FlexibilityNo cancel feeOn-time75%
China SouthernCheapest$792Average$989FlexibilityNo cancel feeOn-time69%
China EasternCheapest$866Average$1,204FlexibilityNo cancel feeOn-time62%
Air IndiaCheapest$978Average$1,476FlexibilityNo cancel feeOn-timeN/A
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%
Qatar AirwaysCheapest$1,139Average$1,407FlexibilityNo cancel feeOn-time68%
Malaysia AirlinesCheapest$1,188Average$1,484FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$1,210Average$1,490FlexibilityNo cancel feeOn-time70%

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