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Cheap flights from London Heathrow Airport to Sydney from C$ 999

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 31/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
15 Jan — 22 Jan1
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 16 December 2025.

Thu 25/127:10 a.m.LHR - SYD
2 stops26h 40mCathay Pacific
Wed 14/110:20 p.m.SYD - LHR
1 stop27h 40mCathay Pacific
Deal found 14/12C$ 1,971
Sun 21/1210:35 p.m.LHR - SYD
2 stops53h 05mSichuan Airlines
Mon 12/19:25 p.m.SYD - LHR
2 stops47h 30mSichuan Airlines
Deal found 14/12C$ 1,993
Sun 21/1210:35 p.m.LHR - SYD
2 stops53h 05mSichuan Airlines
Fri 23/19:25 p.m.SYD - LHR
2 stops47h 30mSichuan Airlines
Deal found 15/12C$ 2,030
Tue 16/128:00 p.m.LHR - SYD
2 stops55h 40mSichuan Airlines
Mon 12/19:25 p.m.SYD - LHR
2 stops47h 30mSichuan Airlines
Deal found 14/12C$ 2,045
Thu 25/127:10 a.m.LHR - SYD
2 stops37h 05mMultiple Airlines
Thu 15/13:15 p.m.SYD - LHR
2 stops33h 40mMultiple Airlines
Deal found 14/12C$ 2,067
Tue 16/128:00 p.m.LHR - SYD
2 stops55h 40mSichuan Airlines
Fri 16/19:25 p.m.SYD - LHR
2 stops52h 30mSichuan Airlines
Deal found 15/12C$ 2,079
Thu 25/125:50 p.m.LHR - SYD
1 stop26h 25mCathay Pacific
Thu 15/13:00 p.m.SYD - LHR
2 stops35h 00mCathay Pacific
Deal found 14/12C$ 2,093
Thu 25/1210:35 p.m.LHR - SYD
2 stops53h 05mSichuan Airlines
Fri 16/19:25 p.m.SYD - LHR
2 stops47h 30mSichuan Airlines
Deal found 15/12C$ 2,094
Sun 21/1210:35 p.m.LHR - SYD
2 stops53h 05mSichuan Airlines
Fri 9/19:25 p.m.SYD - LHR
2 stops53h 45mSichuan Airlines
Deal found 15/12C$ 2,111
Wed 31/129:00 p.m.LHR - SYD
1 stop30h 50mTianjin Airlines
Fri 16/14:50 p.m.SYD - LHR
1 stop37h 10mTianjin Airlines
Deal found 15/12C$ 2,112

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 16 December 2025.

Round-trip from

C$ 1,466

One-way from

C$ 999

Popular in

December

Cheapest in

May

Average price

C$ 2,389
Air India
  • Air India
  • 19/2-11/3
  • 2 total stops
  • 76h 50m total
  • London to Sydney
Search Deals
Tianjin Airlines
  • Tianjin Airlines
  • 31/1
  • 1 total stop
  • 30h 50m total
  • London to Sydney
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 235 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 72 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 16 December 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

Fri 1/5

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

1 stop28h 35m

Sydney Kingsford Smith

Thu 28/5

10:10 p.m.-4:30 p.m.

1 stop27h 20m

C$ 1,588

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 6/5

7:30 p.m.-10:20 a.m.

2 stops29h 50m

Sydney Kingsford Smith

Mon 25/5

2:50 p.m.-11:25 a.m.

2 stops29h 35m

C$ 1,628

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 5/2

10:00 p.m.-7:15 p.m.

1 stop34h 15m

Sydney Kingsford Smith

Thu 26/2

8:45 p.m.-8:30 p.m.

1 stop34h 45m

C$ 1,727

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 7/2

3:20 p.m.-9:05 a.m.

1 stop30h 45m

Sydney Kingsford Smith

Sun 22/2

2:00 p.m.-7:25 a.m.

1 stop28h 25m

C$ 1,772

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 6/2

3:20 p.m.-9:15 a.m.

2 stops30h 55m

Sydney Kingsford Smith

Mon 23/2

11:50 a.m.-6:40 a.m.

2 stops29h 50m

C$ 1,772

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 24/2

3:20 p.m.-9:05 a.m.

1 stop30h 45m

Sydney Kingsford Smith

Mon 9/3

10:20 a.m.-6:40 a.m.

2 stops31h 20m

C$ 1,772

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 7/2

1:45 p.m.-6:20 a.m.

1 stop29h 35m

Sydney Kingsford Smith

Mon 23/2

11:50 a.m.-7:30 a.m.

1 stop30h 40m

C$ 1,772

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 31/1

1:45 p.m.-6:20 a.m.

1 stop29h 35m

Sydney Kingsford Smith

Mon 23/2

11:50 a.m.-7:30 a.m.

1 stop30h 40m

C$ 1,772

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 3/2

11:35 a.m.-6:20 a.m.

2 stops31h 45m

Sydney Kingsford Smith

Fri 20/2

12:10 p.m.-7:25 a.m.

1 stop30h 15m

C$ 1,772

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 1/2

11:35 a.m.-6:20 a.m.

2 stops31h 45m

Sydney Kingsford Smith

Fri 20/2

11:50 a.m.-7:30 a.m.

1 stop30h 40m

C$ 1,772

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/12

Showing 1-10 of 21 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 12 December 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of C$ 945). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of C$ 1,515). 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 16 December 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$ 1,566, China Airlines can have you in Sydney from London Heathrow Airport in 28h 35m. 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of C$ 945). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of C$ 1,515). 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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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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