Cheap flights from London Heathrow Airport to Sydney from $724

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 21/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
29 Mar — 5 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 28 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 27 February 2026.

Sun 1/1121:00
LHR
-
SYD
1 stop26h 00m
China Eastern
Mon 16/1112:00
SYD
-
LHR
1 stop40h 30m
China Eastern
Deal found 25/2$1,324
Tue 3/1121:00
LHR
-
SYD
1 stop26h 00m
China Eastern
Thu 19/1121:30
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 27/2$1,327
Mon 19/1021:20
LHR
-
SYD
1 stop30h 15m
China Eastern
Tue 3/1112:00
SYD
-
LHR
1 stop40h 30m
China Eastern
Deal found 26/2$1,329
Fri 23/1021:20
LHR
-
SYD
1 stop30h 15m
China Eastern
Thu 12/1121:30
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 27/2$1,330
Mon 2/322:05
LHR
-
SYD
1 stop24h 30m
Cathay Pacific
Wed 11/322:20
SYD
-
LHR
1 stop27h 40m
Cathay Pacific
Deal found 27/2$1,331
Sun 19/422:10
LHR
-
SYD
1 stop36h 30m
China Southern
Tue 5/514:10
SYD
-
LHR
1 stop38h 10m
China Southern
Deal found 27/2$1,333
Tue 3/1122:00
LHR
-
SYD
1 stop24h 25m
China Southern
Tue 24/1111:25
SYD
-
LHR
2 stops37h 35m
China Southern
Deal found 27/2$1,334
Sun 19/419:15
LHR
-
SYD
2 stops28h 10m
China Southern
Sun 10/514:15
SYD
-
LHR
1 stop38h 05m
China Southern
Deal found 26/2$1,336
Thu 12/308:45
LHR
-
SYD
1 stop23h 30m
Air India
Sun 29/321:00
SYD
-
LHR
1 stop24h 30m
Air India
Deal found 26/2$1,337
Mon 19/1021:20
LHR
-
SYD
2 stops49h 40m
China Eastern
Wed 28/1021:30
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 24/2$1,338
Tue 3/308:45
LHR
-
SYD
1 stop23h 30m
Multiple Airlines
Thu 5/309:55
SYD
-
LHR
1 stop44h 05m
Multiple Airlines
Deal found 26/2$1,340
Thu 12/308:50
LHR
-
SYD
1 stop22h 05m
Multiple Airlines
Tue 17/321:00
SYD
-
LHR
1 stop30h 20m
Multiple Airlines
Deal found 24/2$1,341

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 27 February 2026.

Round-trip from

$1,327

One-way from

$724

Popular in

December

Cheapest in

May

Average price

$1,785
China Eastern
  • China Eastern
  • 10/5-1/6
  • 2 total stops
  • 57h 50m total
  • London to Sydney
China Southern
  • China Southern
  • 21/5
  • 1 total stop
  • 29h 15m total
  • London to Sydney
Highest demand for flights based on searches. 8% potential increase in price ($234 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 February 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 27 February 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

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 11/3

21:00-13:35

1 stop29h 35m

Sydney Kingsford Smith

Sun 15/3

21:30-17:30

1 stop31h 00m

$1,600

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 25/4

06:30-19:10

2 stops27h 40m

Sydney Kingsford Smith

Sat 16/5

21:30-15:10

2 stops26h 40m

$1,670

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 11/3

06:35-06:35

2 stops37h 00m

Sydney Kingsford Smith

Sun 15/3

21:15-14:55

2 stops28h 40m

$1,725

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 3/4

18:30-20:10

2 stops39h 40m

Sydney Kingsford Smith

Tue 21/4

21:30-22:25

2 stops33h 55m

$1,750

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 7/4

21:20-08:00

3 stops49h 40m

Sydney Kingsford Smith

Tue 28/4

10:05-18:40

3 stops65h 35m

$1,805

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 24/3

15:20-08:05

1 stop29h 45m

Sydney Kingsford Smith

Sun 19/4

09:30-07:15

2 stops30h 45m

$1,839

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 10/5

20:50-09:45

2 stops51h 55m

Sydney Kingsford Smith

Wed 20/5

11:40-06:30

2 stops51h 50m

$1,957

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 8/7

06:30-19:10

2 stops27h 40m

Sydney Kingsford Smith

Tue 21/7

21:30-15:10

2 stops26h 40m

$1,977

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 5/8

16:15-06:55

1 stop29h 40m

Sydney Kingsford Smith

Wed 2/9

09:30-06:55

2 stops30h 25m

$2,384

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 19/7

16:15-06:55

1 stop29h 40m

Sydney Kingsford Smith

Sun 30/8

09:30-07:15

2 stops30h 45m

$2,910

Flights are sorted by cheapest return flights first.

Deals found on 24/2

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

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 20 February 2026.

Booking 28 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of $974). 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 27 February 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 27 February 2026.
Get a feel of what it's like to fly with Singapore Airlines, Cathay Pacific, andChina Southern 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.

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.2

Crew

8.6

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.

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.2

Crew

8.6

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.

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.2

Crew

8.6

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.

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.2

Crew

8.6

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.

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.2

Crew

8.6

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.

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.2

Crew

8.6

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 27h 40m. 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 $1,018, 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 45% 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 China Eastern. According to our data, you can fly for as low as $702. Users have also found prices from $718 and $736 on Air China 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of $974). 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
Leura
Coogee
Cronulla
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 27 February 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 27 February 2026.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest$1,018Average$1,523FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest$1,106Average$2,299FlexibilityNo cancel feeOn-time67%
Search Air China flights
China EasternCheapest$1,212Average$1,450FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air IndiaCheapest$1,340Average$1,897FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Qatar AirwaysCheapest$1,414Average$2,064FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Malaysia AirlinesCheapest$1,414Average$1,955FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Turkish AirlinesCheapest$1,419Average$1,848FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Etihad AirwaysCheapest$1,446Average$2,335FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
China AirlinesCheapest$1,458Average$1,607FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Cathay PacificCheapest$1,464Average$1,742FlexibilityNo 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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