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Cheap flights from London Heathrow Airport to Sydney from C$ 844

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 27/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
5 Aug — 12 Aug1
1 adult

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 31 July 2025.

Round-trip from

C$ 1,502

One-way from

C$ 844

Popular in

December

Cheapest in

March

Average price

C$ 2,360
SWISS
  • SWISS
  • 3/11-19/11
  • 4 total stops
  • 75h 35m total
  • London to Sydney
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China Southern
  • China Southern
  • 27/10
  • 2 total stops
  • 35h 50m total
  • London to Sydney
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 304 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 July 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 31 July 2025.

Mon 3/116:00 a.m.LHR - SYD
2 stops42h 50mSWISS
Wed 19/113:15 p.m.SYD - LHR
2 stops32h 45mSWISS
Deal found 29/7C$ 1,502
Mon 1/96:55 p.m.LHR - SYD
1 stop32h 20mVietnam Airlines
Wed 6/510:15 a.m.SYD - LHR
1 stop39h 40mVietnam Airlines
Deal found 31/7C$ 1,542
Mon 8/1211:30 a.m.LHR - SYD
2 stops32h 45mLufthansa
Thu 12/24:10 p.m.SYD - LHR
2 stops36h 40mLufthansa
Deal found 30/7C$ 1,549
Sat 25/1010:15 p.m.LHR - SYD
1 stop27h 45mCathay Pacific
Wed 12/118:45 a.m.SYD - LHR
1 stop32h 35mCathay Pacific
Deal found 30/7C$ 1,557
Wed 29/109:15 p.m.LHR - SYD
1 stop28h 00mChina Airlines
Tue 2/1210:10 p.m.SYD - LHR
1 stop29h 45mChina Airlines
Deal found 29/7C$ 1,596
Wed 17/911:00 a.m.LHR - SYD
1 stop23h 35mMalaysia Airlines
Tue 30/91:05 p.m.SYD - LHR
1 stop25h 50mMalaysia Airlines
Deal found 29/7C$ 1,601
Wed 24/97:30 p.m.LHR - SYD
2 stops29h 50mAustrian Airlines
Wed 29/103:35 p.m.SYD - LHR
2 stops57h 30mAustrian Airlines
Deal found 31/7C$ 1,639

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 31 July 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

Mon 3/11

6:00 a.m.-11:50 a.m.

2 stops42h 50m

Sydney Kingsford Smith

Wed 19/11

3:15 p.m.-1:00 p.m.

2 stops32h 45m

C$ 1,502

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 1/9

6:55 p.m.-12:15 p.m.

1 stop32h 20m

Sydney Kingsford Smith

Wed 6/5

10:15 a.m.-4:55 p.m.

1 stop39h 40m

C$ 1,542

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 8/12

11:30 a.m.-7:15 a.m.

2 stops32h 45m

Sydney Kingsford Smith

Thu 12/2

4:10 p.m.-5:50 p.m.

2 stops36h 40m

C$ 1,549

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 25/10

10:15 p.m.-12:00 p.m.

1 stop27h 45m

Sydney Kingsford Smith

Mon 10/11

10:20 p.m.-8:10 p.m.

1 stop32h 50m

C$ 1,557

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 29/10

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

1 stop28h 00m

Sydney Kingsford Smith

Tue 2/12

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

1 stop29h 45m

C$ 1,596

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 17/9

11:00 a.m.-7:35 p.m.

1 stop23h 35m

Sydney Kingsford Smith

Tue 30/9

1:05 p.m.-5:55 a.m.

1 stop25h 50m

C$ 1,601

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 24/9

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

2 stops29h 50m

Sydney Kingsford Smith

Wed 29/10

3:35 p.m.-2:05 p.m.

2 stops57h 30m

C$ 1,639

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 27/10

9:30 p.m.-8:20 p.m.

2 stops35h 50m

C$ 844

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 12/9

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

3 stops50h 30m

C$ 859

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 30/8

10:00 p.m.-2:40 p.m.

1 stop31h 40m

C$ 891

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

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 25 July 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 31 July 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.

Weekly flight availability from London Heathrow Airport to Sydney

Explore weekly flight availability from Heathrow to Sydney. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 31 July 2025.

The most flights from LHR to SYD are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

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

What’s the top layover airport for flights from London Heathrow Airport to Sydney?

Share of one-stop round-trip flights from London Heathrow Airport to Sydney chosen by Cheapflights users in the past 12 months, using the same layover each way.

Shanghai (PVG) – chosen by Cheapflights users on 50% of one-stop itineraries from London Heathrow Airport to Sydney on Cheapflights.

What’s the cheapest layover airport for flights from London Heathrow Airport to Sydney?

Average round-trip fare for 1-stop flights from London Heathrow Airport to Sydney, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Shanghai (PVG) is the most affordable 1-stop option, with an average round-trip price of C$ 1,334.

What’s the fastest layover option from London Heathrow Airport to Sydney?

Shortest average travel time for 1-stop one-way flights from London Heathrow Airport to Sydney, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Dubai (DXB) have the shortest average one-way travel time for 1-stop routes: 21h 50m.

Which airport typically offers the quickest layover for flights from London Heathrow Airport to Sydney?

Average layover duration for 1-stop one-way flights from London Heathrow Airport to Sydney, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Dubai (DXB) offer the fastest connection on this route, with an average layover time of 1h 15m.

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 31 July 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Sydney, such as China Airlines,Austrian Airlines, andCathay Pacific. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
754 reviews
Check prices

Entertainment

8.0

Crew

8.5

Comfort

8.0

Food

7.8

Boarding

8.3

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
China Airlines
8.3
Very good
754 reviews
China Airlines
8.3
Very good
754 reviews
Check prices

Entertainment

8.0

Crew

8.5

Comfort

8.0

Food

7.8

Boarding

8.3

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
Austrian Airlines
7.6
Good
823 reviews
China Airlines
8.3
Very good
754 reviews
Check prices

Entertainment

8.0

Crew

8.5

Comfort

8.0

Food

7.8

Boarding

8.3

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
Cathay Pacific
7.6
Good
949 reviews
China Airlines
8.3
Very good
754 reviews
Check prices

Entertainment

8.0

Crew

8.5

Comfort

8.0

Food

7.8

Boarding

8.3

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
China Southern
7.6
Good
104 reviews
China Airlines
8.3
Very good
754 reviews
Check prices

Entertainment

8.0

Crew

8.5

Comfort

8.0

Food

7.8

Boarding

8.3

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
SWISS
7.5
Good
1,686 reviews
China Airlines
8.3
Very good
754 reviews
Check prices

Entertainment

8.0

Crew

8.5

Comfort

8.0

Food

7.8

Boarding

8.3

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

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.

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

    Our cheapest airline available from London Heathrow Airport to Sydney is SWISS. Our recent data shows that you can find tickets from as low as C$ 1,502 on this airline. Additional options worth looking into are Vietnam Airlines and Lufthansa, starting at C$ 1,542 and C$ 1,549 round-trip. SWISS is currently priced 17% below the average price you’ll pay for this route.

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

    C$ 844 is the cheapest one-way deal found within the past few days, from China Southern. You may also be able to find cheap deals on Tianjin Airlines and China Airlines, with prices starting from C$ 891 and C$ 942, 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

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