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Cheap flights from London Heathrow Airport to Sydney from C$ 801

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 20/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
11 Oct — 18 Oct1
1 adult
1 adult, Economy

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 11 September 2025.

Round-trip from

C$ 1,515

One-way from

C$ 801

Popular in

December

Cheapest in

March

Average price

C$ 1,602
Austrian Airlines
  • Austrian Airlines
  • 6/3-16/3
  • 4 total stops
  • 61h 50m total
  • London to Sydney
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26/10
  • 26/10
  • 2 total stops
  • 51h 50m total
  • London to Sydney
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 308 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 75 potential savings vs. average RT price).
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Average for round-trip flights in September 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 11 September 2025.

Wed 5/118:55 p.m.LHR - SYD
1 stop34h 00mEtihad Airways
Fri 14/114:35 p.m.SYD - LHR
1 stop25h 05mEtihad Airways
Deal found 9/9C$ 1,540
Tue 2/1211:00 a.m.LHR - SYD
1 stop35h 50mVietnam Airlines
Wed 10/610:15 a.m.SYD - LHR
1 stop39h 40mVietnam Airlines
Deal found 11/9C$ 1,559
Mon 10/118:50 a.m.LHR - SYD
1 stop34h 45mEtihad Airways
Sat 22/119:30 p.m.SYD - LHR
1 stop44h 10mEtihad Airways
Deal found 9/9C$ 1,576
Wed 5/118:55 p.m.LHR - SYD
1 stop34h 00mEtihad Airways
Sat 15/119:30 p.m.SYD - LHR
1 stop44h 10mEtihad Airways
Deal found 9/9C$ 1,577
Fri 7/118:50 a.m.LHR - SYD
1 stop34h 45mEtihad Airways
Fri 21/119:30 p.m.SYD - LHR
1 stop44h 10mEtihad Airways
Deal found 9/9C$ 1,578
Mon 1/1211:00 a.m.LHR - SYD
1 stop39h 15mVietnam Airlines
Wed 10/610:15 a.m.SYD - LHR
1 stop39h 40mVietnam Airlines
Deal found 11/9C$ 1,581
Sun 7/127:20 p.m.LHR - SYD
1 stop24h 15mEtihad Airways
Tue 23/129:30 p.m.SYD - LHR
1 stop28h 00mEtihad Airways
Deal found 11/9C$ 1,585
Thu 6/118:50 a.m.LHR - SYD
1 stop22h 05mEtihad Airways
Mon 10/114:35 p.m.SYD - LHR
1 stop25h 05mEtihad Airways
Deal found 9/9C$ 1,605
Sat 8/118:55 p.m.LHR - SYD
1 stop22h 40mEtihad Airways
Sat 22/119:30 p.m.SYD - LHR
1 stop44h 10mEtihad Airways
Deal found 9/9C$ 1,614
Fri 19/99:30 a.m.LHR - SYD
1 stop22h 25mEtihad Airways
Sat 4/109:30 p.m.SYD - LHR
1 stop30h 15mEtihad Airways
Deal found 9/9C$ 1,616
Sat 6/1211:00 a.m.LHR - SYD
1 stop35h 50mVietnam Airlines
Wed 10/610:15 a.m.SYD - LHR
1 stop39h 40mVietnam Airlines
Deal found 11/9C$ 1,623
Wed 31/129:15 p.m.LHR - SYD
1 stop28h 00mChina Airlines
Sun 1/310:10 p.m.SYD - LHR
1 stop29h 45mChina Airlines
Deal found 11/9C$ 1,627

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 11 September 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

Tue 4/11

7:20 p.m.-5:55 p.m.

1 stop35h 35m

Sydney Kingsford Smith

Thu 20/11

9:30 p.m.-12:05 p.m.

1 stop25h 35m

C$ 1,605

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 31/1

9:15 p.m.-12:15 p.m.

1 stop28h 00m

Sydney Kingsford Smith

Mon 16/2

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

1 stop29h 45m

C$ 1,627

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 16/11

8:50 a.m.-5:55 p.m.

1 stop22h 05m

Sydney Kingsford Smith

Wed 26/11

4:35 p.m.-2:30 p.m.

1 stop32h 55m

C$ 1,634

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 21/2

10:05 p.m.-9:35 a.m.

1 stop24h 30m

Sydney Kingsford Smith

Sun 1/3

10:20 p.m.-3:00 p.m.

1 stop27h 40m

C$ 1,653

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 2/3

1:55 p.m.-6:35 a.m.

1 stop29h 40m

Sydney Kingsford Smith

Fri 3/4

4:40 p.m.-7:00 a.m.

1 stop24h 20m

C$ 1,657

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 19/11

5:30 p.m.-7:15 a.m.

2 stops26h 45m

Sydney Kingsford Smith

Mon 24/11

3:15 p.m.-7:45 a.m.

2 stops27h 30m

C$ 1,693

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 2/3

8:10 p.m.-6:35 a.m.

1 stop23h 25m

Sydney Kingsford Smith

Wed 25/3

3:55 p.m.-6:15 a.m.

1 stop25h 20m

C$ 1,704

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 3/2

8:55 p.m.-5:55 p.m.

1 stop34h 00m

Sydney Kingsford Smith

Thu 19/2

9:30 p.m.-2:30 p.m.

1 stop28h 00m

C$ 1,731

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 9/12

8:55 p.m.-5:55 p.m.

1 stop34h 00m

Sydney Kingsford Smith

Thu 22/1

9:30 p.m.-12:05 p.m.

1 stop25h 35m

C$ 1,747

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 5/2

8:50 a.m.-5:55 p.m.

1 stop22h 05m

Sydney Kingsford Smith

Tue 24/2

9:30 p.m.-6:10 p.m.

1 stop31h 40m

C$ 1,777

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

Showing 1-10 of 22 results
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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?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Sydney. Price data was last updated on 29 August 2025.

Booking 90 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of C$ 1,326). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of C$ 1,881). 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 11 September 2025.

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.

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$ 1,653, Etihad Airways can have you in Sydney from London Heathrow Airport in 24h 30m. London Heathrow Airport and Sydney are separated by a distance of 17008 km. This flight may include one or multiple stops.

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

    C$ 1,020 is the cheapest one-way deal found within the past few days, from Etihad Airways. You may also be able to find cheap deals on Austrian Airlines and Malaysia Airlines, with prices starting from C$ 1,067 and C$ 1,077, 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 C$ 1,326). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of C$ 1,881). 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
Penrith

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