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Cheap flights from London Heathrow Airport to Sydney from C$ 799

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 31/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
30 Mar — 6 Apr1
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 25 March 2025.

Round-trip from

C$ 1,496

One-way from

C$ 799

Popular in

December

Cheapest in

March

Average price

C$ 1,392
SWISS
  • SWISS
  • 3/9-8/10
  • 4 total stops
  • 82h 00m total
  • London to Sydney
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Tianjin Airlines
  • Tianjin Airlines
  • 31/5
  • 1 total stop
  • 31h 40m total
  • London to Sydney
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 320 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 80 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 25 March 2025.

Mon 22/95:30 p.m.LHR - SYD
2 stops27h 40mLufthansa
Wed 15/104:00 p.m.SYD - LHR
2 stops27h 55mLufthansa
Deal found 24/3C$ 1,484
Tue 23/97:50 p.m.LHR - SYD
1 stop27h 25mVietnam Airlines
Sat 18/103:15 p.m.SYD - LHR
1 stop36h 35mVietnam Airlines
Deal found 24/3C$ 1,493
Wed 3/912:10 p.m.LHR - SYD
2 stops43h 35mSWISS
Wed 8/1012:00 p.m.SYD - LHR
2 stops38h 25mSWISS
Deal found 24/3C$ 1,496
Wed 30/411:20 a.m.LHR - SYD
2 stops46h 40mTurkish Airlines
Tue 13/58:55 p.m.SYD - LHR
2 stops27h 10mTurkish Airlines
Deal found 24/3C$ 1,516
Tue 6/52:45 p.m.LHR - SYD
1 stop42h 15mEtihad Airways
Mon 12/59:30 p.m.SYD - LHR
1 stop42h 30mEtihad Airways
Deal found 24/3C$ 1,566
Wed 30/45:00 p.m.LHR - SYD
1 stop30h 40mCathay Pacific
Tue 13/510:10 a.m.SYD - LHR
1 stop28h 30mCathay Pacific
Deal found 24/3C$ 1,626
Mon 25/89:10 p.m.LHR - SYD
1 stop28h 35mChina Airlines
Mon 8/910:10 p.m.SYD - LHR
1 stop27h 20mChina Airlines
Deal found 24/3C$ 1,627
Wed 27/86:15 a.m.LHR - SYD
2 stops28h 55mMultiple Airlines
Sun 14/99:50 p.m.SYD - LHR
1 stop31h 45mMultiple Airlines
Deal found 24/3C$ 1,656
Fri 2/59:35 p.m.LHR - SYD
1 stop27h 25mMalaysia Airlines
Sun 11/510:10 p.m.SYD - LHR
1 stop27h 25mMalaysia Airlines
Deal found 24/3C$ 1,669
Sun 11/56:10 p.m.LHR - SYD
2 stops27h 30mFinnair
Mon 26/510:20 a.m.SYD - LHR
2 stops31h 50mFinnair
Deal found 24/3C$ 1,890
Wed 23/47:15 p.m.LHR - SYD
2 stops28h 10mChina Southern
Wed 30/49:45 p.m.SYD - LHR
2 stops53h 20mChina Southern
Deal found 24/3C$ 1,901
Mon 31/31:05 p.m.LHR - SYD
2 stops32h 50mUnited Airlines
Mon 28/49:30 a.m.SYD - LHR
2 stops30h 45mUnited Airlines
Deal found 24/3C$ 1,907

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 25 March 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

Wed 3/9

12:10 p.m.-4:45 p.m.

2 stops43h 35m

Sydney Kingsford Smith

Wed 8/10

12:00 p.m.-4:25 p.m.

2 stops38h 25m

C$ 1,496

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 30/4

11:20 a.m.-7:00 p.m.

2 stops46h 40m

Sydney Kingsford Smith

Tue 13/5

8:55 p.m.-3:05 p.m.

2 stops27h 10m

C$ 1,516

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 6/5

2:45 p.m.-6:00 p.m.

1 stop42h 15m

Sydney Kingsford Smith

Mon 12/5

9:30 p.m.-7:00 a.m.

1 stop42h 30m

C$ 1,566

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 30/4

5:00 p.m.-8:40 a.m.

1 stop30h 40m

Sydney Kingsford Smith

Tue 13/5

10:10 a.m.-5:40 a.m.

1 stop28h 30m

C$ 1,626

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 25/8

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

1 stop28h 35m

Sydney Kingsford Smith

Mon 8/9

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

1 stop27h 20m

C$ 1,627

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 27/8

6:15 a.m.-8:10 p.m.

2 stops28h 55m

Sydney Kingsford Smith

Sun 14/9

9:50 p.m.-8:35 p.m.

1 stop31h 45m

C$ 1,656

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 6/9

5:30 p.m.-6:10 a.m.

2 stops27h 40m

Sydney Kingsford Smith

Thu 16/10

4:00 p.m.-8:15 a.m.

2 stops26h 15m

C$ 1,658

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 2/5

9:35 p.m.-10:00 a.m.

1 stop27h 25m

Sydney Kingsford Smith

Sun 11/5

10:10 p.m.-4:35 p.m.

1 stop27h 25m

C$ 1,669

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 11/5

7:50 p.m.-8:15 a.m.

2 stops27h 25m

Sydney Kingsford Smith

Mon 26/5

10:15 a.m.-5:50 p.m.

1 stop40h 35m

C$ 1,742

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 11/5

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

2 stops27h 30m

Sydney Kingsford Smith

Mon 26/5

10:20 a.m.-9:10 a.m.

2 stops31h 50m

C$ 1,890

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/3

Showing 1-10 of 26 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 21 March 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 25 March 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 25 March 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).

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 mm per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

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 25 March 2025.
Get a feel of what it's like to fly with Korean Air, China Airlines and Emirates from London to Sydney by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,047 reviews
Check prices

Food

8.1

Overall

8.4

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,047 reviews
Korean Air
8.4
Very good
1,047 reviews
Check prices

Food

8.1

Overall

8.4

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.2
Very good
722 reviews
Korean Air
8.4
Very good
1,047 reviews
Check prices

Food

8.1

Overall

8.4

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Emirates
8.0
Very good
3,190 reviews
Korean Air
8.4
Very good
1,047 reviews
Check prices

Food

8.1

Overall

8.4

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
KLM
7.8
Good
1,318 reviews
Korean Air
8.4
Very good
1,047 reviews
Check prices

Food

8.1

Overall

8.4

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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$ 1,496 on this airline. Additional options worth looking into are Turkish Airlines and Etihad Airways, starting at C$ 1,516 and C$ 1,566 round-trip. SWISS is currently priced 22% 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$ 799 is the cheapest one-way deal found within the past few days, from Tianjin Airlines. You may also be able to find cheap deals on Etihad Airways and Lufthansa, with prices starting from C$ 871 and C$ 1,080, 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Parramatta
Penrith

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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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