Cheap flights from London Heathrow Airport to Sydney from $750

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 17/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
16 Apr — 23 Apr1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Sydney Kingsford Smith are usually found in May or September, booked 32 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from Heathrow to Sydney

Enter your travel dates to find the best prices.

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 17 March 2026.

Sat 11/422:10
LHR
-
SYD
1 stop36h 15m
China Southern
Thu 28/510:05
SYD
-
LHR
2 stops41h 00m
China Southern
Deal found 12/3$1,348
Thu 9/421:00
LHR
-
SYD
2 stops37h 25m
China Southern
Thu 30/414:10
SYD
-
LHR
1 stop38h 10m
China Southern
Deal found 12/3$1,349
Wed 29/422:10
LHR
-
SYD
1 stop36h 15m
China Southern
Thu 14/514:10
SYD
-
LHR
1 stop38h 10m
China Southern
Deal found 12/3$1,350
Fri 5/621:00
LHR
-
SYD
2 stops37h 25m
China Southern
Thu 18/614:10
SYD
-
LHR
1 stop38h 10m
China Southern
Deal found 12/3$1,352
Thu 7/522:10
LHR
-
SYD
1 stop29h 15m
China Southern
Fri 22/514:10
SYD
-
LHR
2 stops36h 55m
China Southern
Deal found 12/3$1,353
Mon 13/421:00
LHR
-
SYD
2 stops30h 25m
China Southern
Tue 28/410:05
SYD
-
LHR
2 stops39h 10m
China Southern
Deal found 12/3$1,356
Wed 29/422:10
LHR
-
SYD
1 stop36h 15m
China Southern
Sun 17/521:45
SYD
-
LHR
2 stops29h 20m
China Southern
Deal found 12/3$1,358
Fri 1/520:25
LHR
-
SYD
1 stop33h 25m
Multiple Airlines
Sun 17/510:05
SYD
-
LHR
2 stops41h 35m
Multiple Airlines
Deal found 12/3$1,359
Sat 31/1021:30
LHR
-
SYD
2 stops35h 50m
China Southern
Sat 14/1111:25
SYD
-
LHR
1 stop42h 10m
China Southern
Deal found 12/3$1,360
Thu 7/521:20
LHR
-
SYD
3 stops49h 40m
China Eastern
Fri 22/511:00
SYD
-
LHR
1 stop40h 40m
China Eastern
Deal found 12/3$1,363

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 17 March 2026.

Round-trip from

$1,363

One-way from

$750

Popular in

December

Cheapest in

May

Average price

$1,872
Air India
  • Air India
  • 15/5-15/6
  • 2 total stops
  • 56h 40m total
  • London to Sydney
China Southern
  • China Southern
  • 17/6
  • 2 total stops
  • 39h 10m total
  • London to Sydney
Highest demand for flights based on searches. 7% potential increase in price ($229 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease ($76 potential savings vs. average return price).
Average for round-trip flights in March 2026

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 17 March 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 11/5

21:20-12:35

1 stop30h 15m

Sydney Kingsford Smith

Sat 23/5

10:00-18:40

2 stops41h 40m

$1,390

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 19/4

18:30-06:10

2 stops50h 40m

Sydney Kingsford Smith

Wed 13/5

15:40-16:00

2 stops33h 20m

$1,457

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 4/6

06:30-19:10

2 stops27h 40m

Sydney Kingsford Smith

Sun 7/6

15:40-12:10

2 stops29h 30m

$1,661

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 20/4

21:20-12:35

1 stop30h 15m

Sydney Kingsford Smith

Sun 3/5

11:00-18:40

1 stop40h 40m

$1,687
Fastest return journey

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 15/4

09:30-16:50

1 stop22h 20m

Sydney Kingsford Smith

Thu 16/4

20:50-12:45

1 stop24h 55m

$1,828

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 29/6

21:10-10:45

1 stop28h 35m

Sydney Kingsford Smith

Sun 23/8

22:10-16:30

1 stop27h 20m

$1,850

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 1/5

21:20-08:00

3 stops49h 40m

Sydney Kingsford Smith

Fri 8/5

10:05-18:40

2 stops41h 35m

$1,914

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 3/4

18:30-20:10

2 stops39h 40m

Sydney Kingsford Smith

Wed 1/7

21:05-16:40

2 stops28h 35m

$1,930

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 4/6

18:55-08:15

1 stop28h 20m

Sydney Kingsford Smith

Sun 7/6

10:15-17:05

2 stops39h 50m

$1,937

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 1/4

21:45-17:50

1 stop34h 05m

Sydney Kingsford Smith

Tue 30/6

21:30-18:45

1 stop30h 15m

$1,950

Flights are sorted by cheapest return flights first.

Deals found on 14/3

Showing 1-10 of 20 resultsSorted by cheapest first
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 return 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 return flight from Heathrow to Sydney. Price data was last updated on 13 March 2026.

Booking 32 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport 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 Heathrow Airport to Sydney?

Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of $1,110). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of $1,514). 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 17 March 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Sydney as you normally would.

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 17 March 2026.
Get a feel of what it's like to fly with Singapore Airlines,Cathay Pacific, andQantas Airways from London Heathrow Airport to Sydney by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.2

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

Overall

8.2

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

Overall

8.2

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

Overall

8.2

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

Overall

8.2

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

Overall

8.2

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

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?

    Located just 7.5 km from the city centre, Sydney Kingsford Smith is the airport most travellers will use when flying to Sydney from London Heathrow. Booking flights from London Heathrow to Kingsford Smith (SYD) should be relatively easy as there are 3 daily inbound flights from London Heathrow from 15 different airlines.

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

    Departing from London Heathrow Airport to Sydney will take you 30h 15m. There are 17008 km between London Heathrow Airport and Sydney. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    China Southern, at $1,028, was found to be the cheapest airline from London Heathrow Airport to Sydney.Alternate airlines to your destination round-trip include Air China and China Eastern. China Southern is 46% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for Air China. According to our data, you can fly for as low as $696. Users have also found prices from $709 and $739 on China Eastern and China Southern, 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 holiday 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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of $1,110). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of $1,514). 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

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Penrith
Katoomba
Manly
Terrigal
Lithgow
Bondi Beach
Coogee
Cronulla
Leura
Randwick

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Fly from Heathrow to Sydney on these airlines

Choose from the following airlines for your flight from Heathrow to Sydney. Flights are based on user searches made on Cheapflights and were last updated on 17 March 2026.

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 647,157 searches. Data last updated 17 March 2026.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest$1,028Average$1,538FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest$1,117Average$2,323FlexibilityNo cancel feeOn-time67%
Search Air China flights
China EasternCheapest$1,242Average$1,507FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air IndiaCheapest$1,354Average$1,836FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Qatar AirwaysCheapest$1,428Average$2,260FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Malaysia AirlinesCheapest$1,429Average$1,974FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Turkish AirlinesCheapest$1,433Average$1,866FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Etihad AirwaysCheapest$1,460Average$2,295FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
China AirlinesCheapest$1,472Average$1,623FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Cathay PacificCheapest$1,479Average$1,810FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Sydney?

Cheapflights helps you search for flights from Heathrow to Sydney via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Sydney?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Sydney.

Can Cheapflights find flights from Heathrow to Sydney with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Sydney flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Heathrow to Sydney become cheaper?

Of course! You can now track prices for flights from Heathrow to Sydney and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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