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$547+ 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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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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 Tuesday

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 April 15, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$857
(Mytrip)

One-way from

$547
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,350
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
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Highest demand for flights based on searches. 10% potential increase in price ($158 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 April 2025
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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 April 15, 2025.

This Mytrip deal was found by Cheapflights users on 4/14. 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.
Wed 5/149:20 pmLHR - SYD
1 stop26h 40mChina Eastern
Thu 5/2211:20 amSYD - LHR
2 stops40h 20mChina Eastern
Deal found 4/14$857
This China Southern deal was found by Cheapflights users on 4/14. 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.
Wed 5/79:00 pmLHR - SYD
2 stops48h 25mChina Southern
Tue 5/209:45 pmSYD - LHR
2 stops53h 20mChina Southern
Deal found 4/14$874
This Air China deal was found by Cheapflights users on 4/14. 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.
Tue 11/48:25 pmLHR - SYD
1 stop32h 05mAir China
Sat 11/228:40 pmSYD - LHR
1 stop30h 15mAir China
Deal found 4/14$1,006
This FlightHub deal was found by Cheapflights users on 4/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/121:15 pmLHR - SYD
1 stop43h 45mAir India
Mon 5/197:30 pmSYD - LHR
1 stop25h 00mAir India
Deal found 4/15$1,015
This Austrian Airlines deal was found by Cheapflights users on 4/14. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/910:25 amLHR - SYD
2 stops38h 55mAustrian Airlines
Wed 10/12:50 pmSYD - LHR
2 stops26h 55mAustrian Airlines
Deal found 4/14$1,055
This Vietnam Airlines deal was found by Cheapflights users on 4/14. 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 Vietnam Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/37:50 pmLHR - SYD
1 stop27h 25mVietnam Airlines
Wed 6/1110:15 amSYD - LHR
1 stop39h 40mVietnam Airlines
Deal found 4/14$1,056
This China Airlines deal was found by Cheapflights users on 4/14. 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.
Fri 9/129:10 pmLHR - SYD
1 stop28h 35mChina Airlines
Thu 9/1810:10 pmSYD - LHR
1 stop27h 20mChina Airlines
Deal found 4/14$1,133
This Mytrip deal was found by Cheapflights users on 4/14. 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.
Wed 5/148:35 pmLHR - SYD
3 stops30h 00mMultiple Airlines
Thu 5/229:15 pmSYD - LHR
2 stops30h 45mMultiple Airlines
Deal found 4/14$1,146
This Cathay Pacific deal was found by Cheapflights users on 4/14. 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.
Sat 5/310:15 pmLHR - SYD
1 stop22h 55mCathay Pacific
Mon 5/199:50 pmSYD - LHR
1 stop29h 25mCathay Pacific
Deal found 4/14$1,156
This Etihad Airways deal was found by Cheapflights users on 4/15. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/129:45 pmLHR - SYD
2 stops36h 10mEtihad Airways
Mon 5/195:30 pmSYD - LHR
2 stops34h 15mEtihad Airways
Deal found 4/15$1,177
This Malaysia Airlines deal was found by Cheapflights users on 4/14. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/811:00 amLHR - SYD
1 stop23h 35mMalaysia Airlines
Fri 5/1610:10 pmSYD - LHR
1 stop27h 25mMalaysia Airlines
Deal found 4/14$1,187
This SWISS deal was found by Cheapflights users on 4/14. 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.
Thu 6/56:40 pmLHR - SYD
2 stops26h 30mSWISS
Thu 6/122:05 pmSYD - LHR
2 stops26h 50mSWISS
Deal found 4/14$1,194

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 April 15, 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 5/14

9:20 pm-9:00 am

1 stop26h 40m

Sydney Kingsford Smith

Thu 5/22

11:20 am-6:40 pm

2 stops40h 20m

$857

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 5/7

9:00 pm-6:25 am

2 stops48h 25m

Sydney Kingsford Smith

Tue 5/20

9:45 pm-6:05 pm

2 stops53h 20m

$874

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 5/12

1:15 pm-6:00 pm

1 stop43h 45m

Sydney Kingsford Smith

Mon 5/19

7:30 pm-11:30 am

1 stop25h 00m

$1,015

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 9/9

10:25 am-10:20 am

2 stops38h 55m

Sydney Kingsford Smith

Thu 10/2

2:50 pm-9:40 pm

2 stops39h 50m

$1,055

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 6/3

7:50 pm-8:15 am

1 stop27h 25m

Sydney Kingsford Smith

Wed 6/11

10:15 am-4:55 pm

1 stop39h 40m

$1,056

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 9/12

9:10 pm-10:45 am

1 stop28h 35m

Sydney Kingsford Smith

Mon 9/22

10:10 pm-4:30 pm

1 stop27h 20m

$1,133

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 5/14

8:35 pm-11:35 am

3 stops30h 00m

Sydney Kingsford Smith

Thu 5/22

9:15 pm-7:00 pm

2 stops30h 45m

$1,146

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 5/3

10:15 pm-6:10 am

1 stop22h 55m

Sydney Kingsford Smith

Mon 5/19

9:50 pm-6:15 pm

1 stop29h 25m

$1,156

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 5/12

9:45 pm-6:55 pm

2 stops36h 10m

Sydney Kingsford Smith

Mon 5/19

5:30 pm-6:45 pm

2 stops34h 15m

$1,177

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 5/8

11:00 am-7:35 pm

1 stop23h 35m

Sydney Kingsford Smith

Fri 5/16

10:10 pm-4:35 pm

1 stop27h 25m

$1,187

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 43 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 April.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*2 stars
CheapTicketsDealPrice 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 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 April 11, 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 $1,046). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of $1,643). 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 April 15, 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 April 15, 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).

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Sydney when rainfall is around 2.0 in.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

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 April 15, 2025.
To help decide which airline to fly from London to Sydney, see what other customers have to say about Korean Air, China Airlines and Garuda Indonesia. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,063 reviews

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,063 reviews
Korean Air
8.4
Very good
1,063 reviews

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.2
Very good
729 reviews
Korean Air
8.4
Very good
1,063 reviews

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Garuda Indonesia
8.1
Very good
71 reviews
Korean Air
8.4
Very good
1,063 reviews

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very good
1,288 reviews
Korean Air
8.4
Very good
1,063 reviews

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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 $857, China Eastern will fly you from London Heathrow Airport to Sydney and back. In addition to China Eastern, 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 $874 and $1,015, respectively. These flights start at 35% 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?

    $574 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 Tianjin Airlines and Singapore Airlines, with prices starting from $591 and $607, 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 $1,046). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of $1,643). 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Wollongong
Parramatta
Coogee
Manly

Browse thousands of different options on Cheapflights for your next trip

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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.
Gatwick to Sydney flights

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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$747Average$960FlexibilityNo cancel feeOn-time67%
China SouthernCheapest$766Average$946FlexibilityNo cancel feeOn-time69%
Etihad AirwaysCheapest$1,029Average$1,532FlexibilityNo cancel feeOn-time75%
Cathay PacificCheapest$1,107Average$1,544FlexibilityNo cancel feeOn-time72%
EmiratesCheapest$1,121Average$1,508FlexibilityNo cancel feeOn-time75%
Singapore AirlinesCheapest$1,181Average$1,480FlexibilityNo cancel feeOn-time81%
Malaysia AirlinesCheapest$1,188Average$1,652FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$1,197Average$1,438FlexibilityNo cancel feeOn-time74%
British AirwaysCheapest$1,294Average$1,490FlexibilityNo cancel feeOn-time70%

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