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Heathrow

$510+ Cheap flights from Sydney (SYD) to Heathrow (LHR)

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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — LHR
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from Sydney to Heathrow

Cheapest flights from Sydney to Heathrow
Explore the most affordable flight options available from Sydney to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This Gotogate deal was found by Cheapflights users on 12/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/263:15 pmSYD - LHR
1 stop38h 20mChina Southern
Mon 12/2910:00 pmLHR - SYD
1 stop35h 20mChina Southern
Deal found 12/12$1,344
This Mytrip deal was found by Cheapflights users on 12/12. 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.
Fri 12/268:40 pmSYD - LHR
1 stop30h 15mMultiple Airlines
Mon 12/299:00 pmLHR - SYD
2 stops31h 20mMultiple Airlines
Deal found 12/12$1,453
This Gotogate deal was found by Cheapflights users on 12/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/279:00 pmSYD - LHR
1 stop31h 55mMultiple Airlines
Tue 1/209:00 pmLHR - SYD
1 stop29h 35mMultiple Airlines
Deal found 12/14$1,458
This FlightHub deal was found by Cheapflights users on 12/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:30 pmSYD - LHR
1 stop31h 00mChina Eastern
Wed 12/319:00 pmLHR - SYD
1 stop29h 35mChina Eastern
Deal found 12/14$1,478
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:20 pmSYD - LHR
1 stop32h 50mCathay Pacific
Thu 1/225:50 pmLHR - SYD
1 stop28h 45mCathay Pacific
Deal found 12/15$1,595
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:00 pmSYD - LHR
1 stop30h 20mMultiple Airlines
Wed 12/319:00 pmLHR - SYD
1 stop29h 35mMultiple Airlines
Deal found 12/14$1,621
This Japan Airlines deal was found by Cheapflights users on 12/12. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/159:15 amSYD - LHR
1 stop41h 00mJapan Airlines
Mon 2/28:35 amLHR - SYD
1 stop35h 15mJapan Airlines
Deal found 12/12$1,739
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:20 pmSYD - LHR
1 stop27h 40mCathay Pacific
Thu 1/224:50 pmLHR - SYD
1 stop29h 45mCathay Pacific
Deal found 12/15$1,744

Find flight deals from Sydney to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Heathrow (LHR). 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 15, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$1,091
(Air China)

One-way from

$510
(Gotogate)

Popular in

December

Cheapest in

October

Average price

$1,705
Provider with most accurate pricing for Sydney Kingsford Smith-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Sydney Kingsford Smith-London Heathrow flights.
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From Sydney Kingsford Smith to London Heathrow
Search Deals
One-way flight from Sydney Kingsford Smith to London Heathrow
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($125 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% 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 Sydney to Heathrow 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 15, 2025.
Use the filters below to find and compare flights from Sydney to London Heathrow Airport that are best for you.

Fly from

Sydney

Fly to

Heathrow

Route

Depart

Return

Price

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Mon 2/9

9:15 pm-2:55 pm

2 stops28h 40m

London Heathrow

Mon 2/16

5:45 pm-7:20 pm

2 stops38h 35m

$1,123

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Wed 2/11

9:15 pm-2:55 pm

2 stops28h 40m

London Heathrow

Wed 2/18

10:35 pm-7:20 pm

2 stops33h 45m

$1,123

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Fri 2/13

9:15 pm-9:05 pm

2 stops34h 50m

London Heathrow

Tue 2/17

6:35 am-7:20 pm

2 stops25h 45m

$1,123

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Mon 2/9

9:15 pm-4:55 pm

2 stops30h 40m

London Heathrow

Thu 2/19

6:35 am-7:20 pm

2 stops25h 45m

$1,123

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sun 3/1

9:15 pm-10:25 pm

2 stops36h 10m

London Heathrow

Sun 3/22

6:35 am-7:20 pm

2 stops25h 45m

$1,124

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Fri 5/22

10:10 pm-4:30 pm

1 stop27h 20m

London Heathrow

Tue 5/26

9:10 pm-10:45 am

1 stop28h 35m

$1,130

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Thu 4/30

10:10 pm-4:30 pm

1 stop27h 20m

London Heathrow

Mon 11/2

9:15 pm-12:15 pm

1 stop28h 00m

$1,132

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Thu 5/7

10:10 pm-4:30 pm

1 stop27h 20m

London Heathrow

Tue 5/26

9:10 pm-10:45 am

1 stop28h 35m

$1,133

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Thu 6/4

10:10 pm-4:30 pm

1 stop27h 20m

London Heathrow

Wed 6/24

9:10 pm-10:45 am

1 stop28h 35m

$1,133

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Fri 5/22

9:10 pm-4:00 pm

2 stops27h 50m

London Heathrow

Tue 5/26

6:00 pm-7:15 pm

2 stops40h 15m

$1,139

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 18 results
1
2

Compare providers for flights from Sydney to Heathrow

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 Sydney to Heathrow in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
Trip.comPrice Accuracy2 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 Sydney-London Heathrow Airport flights, users find the pricing of Gotogate to be most consistent on Cheapflights vs. Gotogate Users can find the same prices on Sydney-London Heathrow Airport flight deals on Cheapflights vs. Gotogate >95% of the time. Price accuracy is based on data collected from Sydney-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sydney-London Heathrow Airport 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 Sydney-London Heathrow Airport 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 Sydney to Heathrow

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

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

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

The best time to book flights from Sydney to London Heathrow Airport is 51 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, October is the cheapest month in which you can book a flight from Sydney to London Heathrow Airport (average of $805). Flying from Sydney to London Heathrow Airport in December is currently the most expensive (average of $1,231). 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 SYD to LHR?

Find hourly flight availability from Sydney to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

It’s typically best to fly out from Sydney to London Heathrow Airport in the evening. Doing so could potentially save you 58% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

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

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

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated December 15, 2025.
Get a feel of what it's like to fly with Singapore Airlines, Cathay Pacific, and Qantas Airways from Sydney to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,413 reviews

Boarding

8.3

Food

7.8

Comfort

8.0

Overall

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Singapore Airlines
8.1
Very good
1,413 reviews
Singapore Airlines
8.1
Very good
1,413 reviews

Boarding

8.3

Food

7.8

Comfort

8.0

Overall

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Cathay Pacific
7.6
Good
1,095 reviews
Singapore Airlines
8.1
Very good
1,413 reviews

Boarding

8.3

Food

7.8

Comfort

8.0

Overall

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Qantas Airways
7.5
Good
946 reviews
Singapore Airlines
8.1
Very good
1,413 reviews

Boarding

8.3

Food

7.8

Comfort

8.0

Overall

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Etihad Airways
7.4
Good
1,332 reviews
Singapore Airlines
8.1
Very good
1,413 reviews

Boarding

8.3

Food

7.8

Comfort

8.0

Overall

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
British Airways
6.7
Okay
7,580 reviews
Singapore Airlines
8.1
Very good
1,413 reviews

Boarding

8.3

Food

7.8

Comfort

8.0

Overall

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

Related info for your journey

Find useful and relevant information for your journey from Sydney to Heathrow. 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 from for flights from Sydney to London Heathrow?

    Sydney Kingsford Smith (SYD) is the airport you will fly out of if you book a flight from Sydney to London Heathrow. You should not have trouble finding flights to London Heathrow from Kingsford Smith; the airport handles an average of 3 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 11 airlines have flights from the Sydney airport to London Heathrow. It is only a 4.6 mi journey to Kingsford Smith (SYD) from Sydney’s city center.

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

    Departing from Sydney to London Heathrow Airport will take you 28h 40m. There are 10568 mi between Sydney and London Heathrow Airport.

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

    Our cheapest airline available from Sydney to London Heathrow Airport is Cathay Pacific. Our recent data shows that you can find tickets from as low as $956 on this airline. Additional options worth looking into are Etihad Airways and Singapore Airlines, starting at $1,005 and $1,092 round-trip. Cathay Pacific is 26% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airlines for a one-way flight from Sydney to London Heathrow Airport are Etihad Airways ($300), Thai Airways ($609), and Qantas Airways ($695).

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Sydney to London Heathrow Airport (average of $805). Flying from Sydney to London Heathrow Airport in December is currently the most expensive (average of $1,231). 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
Ilford
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Wembley

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Sydney to Heathrow

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

Top 10 airlines flying from Sydney to Heathrow

Discover the top 10 airlines that operate flights from Sydney to Heathrow. 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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$956Average$1,227FlexibilityNo cancel feeOn-time72%
Etihad AirwaysCheapest$1,005Average$1,269FlexibilityNo cancel feeOn-time75%
Singapore AirlinesCheapest$1,092Average$1,465FlexibilityNo cancel feeOn-time81%
Air IndiaCheapest$1,102Average$1,235FlexibilityNo cancel feeOn-timeN/A
Qatar AirwaysCheapest$1,102Average$1,691FlexibilityNo cancel feeOn-time68%
British AirwaysCheapest$1,147Average$1,519FlexibilityNo cancel feeOn-time70%
EmiratesCheapest$1,186Average$1,409FlexibilityNo cancel feeOn-time75%
Air ChinaCheapest$1,216Average$1,457FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$1,260Average$1,800FlexibilityNo cancel feeOn-time74%
China SouthernCheapest$1,316Average$1,333FlexibilityNo cancel feeOn-time69%

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