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Cheap flights from London Heathrow Airport to Sydney from C$ 815

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
29 May — 5 Jun1
1 adult
1 adult, Economy, 0 bags

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 29 April 2026.

Mon 2/119:00 p.m.
LHR
-
SYD
1 stop26h 00m
China Eastern
Tue 17/1112:00 p.m.
SYD
-
LHR
1 stop40h 30m
China Eastern
Deal found 24/4C$ 1,412
Tue 29/129:00 p.m.
LHR
-
SYD
1 stop29h 35m
China Eastern
Mon 18/19:30 p.m.
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 24/4C$ 1,415
Sun 8/119:00 p.m.
LHR
-
SYD
1 stop26h 00m
China Eastern
Thu 12/119:30 p.m.
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 25/4C$ 1,416
Tue 3/119:00 p.m.
LHR
-
SYD
1 stop26h 00m
China Eastern
Thu 12/119:30 p.m.
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 28/4C$ 1,419
Tue 29/129:00 p.m.
LHR
-
SYD
1 stop29h 35m
China Eastern
Sun 17/112:00 p.m.
SYD
-
LHR
1 stop40h 30m
China Eastern
Deal found 27/4C$ 1,421
Mon 19/109:20 p.m.
LHR
-
SYD
2 stops49h 40m
China Eastern
Wed 28/1012:00 p.m.
SYD
-
LHR
1 stop40h 30m
China Eastern
Deal found 24/4C$ 1,425
Mon 14/99:20 p.m.
LHR
-
SYD
3 stops73h 40m
China Eastern
Mon 9/1112:00 p.m.
SYD
-
LHR
1 stop40h 30m
China Eastern
Deal found 27/4C$ 1,430
Wed 16/99:20 p.m.
LHR
-
SYD
2 stops49h 40m
China Eastern
Wed 21/1011:05 a.m.
SYD
-
LHR
3 stops41h 35m
China Eastern
Deal found 28/4C$ 1,440
Mon 2/119:00 p.m.
LHR
-
SYD
1 stop26h 00m
China Eastern
Mon 16/119:30 p.m.
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 24/4C$ 1,468
Tue 1/99:20 p.m.
LHR
-
SYD
1 stop26h 40m
China Eastern
Wed 28/109:30 p.m.
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 27/4C$ 1,474

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 29 April 2026.

Round-trip from

C$ 1,419

One-way from

C$ 815

Popular in

December

Cheapest in

May

Average price

C$ 1,821
China Eastern
  • China Eastern
  • 2/9-3/11
  • 2 total stops
  • 57h 40m total
  • London to Sydney
Search Deals
9/6
  • 9/6
  • 3 total stops
  • 51h 50m total
  • London to Sydney
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 220 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 74 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 629,999 searches. Data last updated 29 April 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 round-trip

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 1/9

9:20 p.m.-8:00 a.m.

3 stops49h 40m

Sydney Kingsford Smith

Sun 6/9

10:05 a.m.-6:40 p.m.

3 stops65h 35m

C$ 1,665
Quickest round-trip

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 26/6

8:50 p.m.-6:10 a.m.

1 stop24h 20m

Sydney Kingsford Smith

Fri 17/7

9:30 p.m.-12:45 p.m.

1 stop24h 15m

C$ 1,686

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 28/8

6:30 a.m.-10:45 a.m.

2 stops43h 15m

Sydney Kingsford Smith

Thu 26/11

10:10 p.m.-4:55 p.m.

1 stop29h 45m

C$ 1,817

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 4/6

8:50 p.m.-9:40 a.m.

2 stops51h 50m

Sydney Kingsford Smith

Sun 14/6

9:15 a.m.-6:30 a.m.

2 stops30h 15m

C$ 2,079

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 21/10

9:10 p.m.-11:45 a.m.

1 stop28h 35m

Sydney Kingsford Smith

Wed 25/11

10:10 p.m.-4:05 p.m.

2 stops52h 55m

C$ 2,190

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 11/5

9:20 p.m.-8:00 a.m.

3 stops73h 40m

Sydney Kingsford Smith

Wed 17/6

8:30 p.m.-6:40 p.m.

1 stop31h 10m

C$ 2,198

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 13/5

9:30 a.m.-9:50 p.m.

2 stops27h 20m

Sydney Kingsford Smith

Tue 26/5

7:00 p.m.-2:05 p.m.

2 stops28h 05m

C$ 2,211

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 7/9

6:10 p.m.-6:25 a.m.

2 stops51h 15m

Sydney Kingsford Smith

Mon 28/9

9:50 a.m.-8:40 p.m.

2 stops43h 50m

C$ 2,463

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 4/8

6:55 p.m.-6:10 a.m.

1 stop26h 15m

Sydney Kingsford Smith

Sat 29/8

2:50 p.m.-8:00 a.m.

1 stop26h 10m

C$ 2,531

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 21/6

2:20 p.m.-10:05 p.m.

1 stop22h 45m

Sydney Kingsford Smith

Sun 5/7

12:05 p.m.-6:35 a.m.

2 stops27h 30m

C$ 2,877

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/4

Showing 1-10 of 23 resultsSorted by cheapest first
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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?

Booking 59 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 C$ 1,531). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of C$ 2,442). 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 29 April 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.

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

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), located 7.5 km from the city centre, is the airport you fly into when you book flights from London Heathrow to Sydney. 0 airlines have flights to Kingsford Smith from London Heathrow on a regular basis. Booking flights from London Heathrow to Sydney Kingsford Smith should not be difficult; the airport handles an average of 3 inbound flights from London Heathrow per day.

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

    For as low as C$ 1,686, China Eastern can have you in Sydney from London Heathrow Airport in 24h 20m. London Heathrow Airport and Sydney are separated by a distance of 17008 km. This flight may include one or multiple stops.

  • 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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of C$ 1,531). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of C$ 2,442). 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
Bondi Beach
Penrith
Parramatta

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

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

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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.

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Not ready to book yet? You can track prices for flights from Heathrow to Sydney on Cheapflights with our Price Alert feature and get notified when better prices are available.

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