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Cheap flights from London Heathrow Airport to Sydney from $944

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 30/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London Heathrow to Sydney Kingsford Smith are usually found in May or March, booked 90 days in advance, depart on a Tuesday or Thursday and return on a Monday

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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 21 November 2025.

Wed 26/1113:55LHR - SYD
1 stop29h 40mEtihad Airways
Wed 3/1216:35SYD - LHR
1 stop30h 30mEtihad Airways
Deal found 19/11$1,517
Wed 31/1217:15LHR - SYD
2 stops51h 15mChina Southern
Wed 14/111:25SYD - LHR
1 stop42h 10mChina Southern
Deal found 20/11$1,524
Sun 28/1222:00LHR - SYD
1 stop45h 35mChina Southern
Mon 12/109:20SYD - LHR
2 stops63h 40mChina Southern
Deal found 19/11$1,525
Sun 23/1120:25LHR - SYD
1 stop32h 05mAir China
Tue 9/1220:40SYD - LHR
1 stop30h 15mAir China
Deal found 18/11$1,527
Sun 23/1121:30LHR - SYD
2 stops35h 50mChina Southern
Tue 9/1211:25SYD - LHR
2 stops42h 10mChina Southern
Deal found 19/11$1,530
Wed 26/1113:55LHR - SYD
1 stop41h 00mEtihad Airways
Tue 9/1221:30SYD - LHR
1 stop44h 10mEtihad Airways
Deal found 19/11$1,533
Fri 28/1113:55LHR - SYD
1 stop29h 40mEtihad Airways
Tue 24/221:45SYD - LHR
1 stop27h 45mEtihad Airways
Deal found 19/11$1,534
Mon 1/1217:40LHR - SYD
1 stop34h 50mAir China
Mon 15/1220:40SYD - LHR
1 stop30h 15mAir China
Deal found 19/11$1,539
Fri 26/1222:00LHR - SYD
1 stop24h 25mChina Southern
Mon 12/109:20SYD - LHR
2 stops63h 40mChina Southern
Deal found 19/11$1,545
Tue 25/1121:30LHR - SYD
2 stops35h 50mChina Southern
Tue 9/1208:10SYD - LHR
2 stops40h 50mChina Southern
Deal found 20/11$1,547

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 21 November 2025.

Round-trip from

$1,517

One-way from

$944

Popular in

December

Cheapest in

May

Average price

$1,836

Good round-trip deal

$2,090 or less

Good one-way deal

$1,621 or less
Air India
  • Air India
  • 1/2-10/2
  • 2 total stops
  • 49h 15m total
  • London to Sydney
Search Deals
China Southern
  • China Southern
  • 30/11
  • 2 total stops
  • 29h 10m total
  • London to Sydney
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($340 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($91 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from London Heathrow to Sydney Kingsford Smith.
Search Deals
Price to beat on a one-way flight from London Heathrow to Sydney Kingsford Smith.
Search Deals

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 21 November 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

Sun 22/2

13:55-17:55

1 stop41h 00m

Sydney Kingsford Smith

Sat 14/3

21:45-14:30

1 stop27h 45m

$1,670

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 19/5

21:10-10:45

1 stop28h 35m

Sydney Kingsford Smith

Thu 28/5

22:10-16:30

1 stop27h 20m

$1,670

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 21/2

13:55-06:35

1 stop29h 40m

Sydney Kingsford Smith

Fri 13/3

21:45-12:05

1 stop25h 20m

$1,670

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 4/3

14:50-11:55

2 stops34h 05m

Sydney Kingsford Smith

Mon 16/3

15:25-14:05

2 stops33h 40m

$1,694

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 3/2

13:45-06:20

1 stop29h 35m

Sydney Kingsford Smith

Mon 16/2

12:10-07:25

1 stop30h 15m

$1,952

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 21/1

15:20-09:05

1 stop30h 45m

Sydney Kingsford Smith

Sun 1/3

11:50-09:10

2 stops32h 20m

$1,952

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 31/3

13:05-07:55

2 stops32h 50m

Sydney Kingsford Smith

Sat 18/4

10:20-07:25

1 stop30h 05m

$1,952

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 3/2

15:20-09:05

1 stop30h 45m

Sydney Kingsford Smith

Mon 23/3

12:10-07:25

1 stop30h 15m

$1,952

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 30/3

13:05-08:00

1 stop32h 55m

Sydney Kingsford Smith

Fri 17/4

09:30-07:15

2 stops30h 45m

$1,952

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 26/3

10:00-07:00

1 stop34h 00m

Sydney Kingsford Smith

Tue 14/4

10:20-07:25

1 stop30h 05m

$1,952

Flights are sorted by cheapest return flights first.

Deals found on 18/11

Showing 1-10 of 23 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 return 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 return flight from Heathrow to Sydney. Price data was last updated on 14 November 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 $1,062). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of $1,723). 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 21 November 2025.

It’s optimal to fly from London Heathrow Airport to Sydney in the afternoon. By choosing this option you can save up to 18% on the cost of your flight, compared to a flight in the evening.

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 21 November 2025.
Get a feel of what it's like to fly with Singapore Airlines, Cathay Pacific, andQantas Airways from London Heathrow Airport to Sydney by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Comfort

8.0

Entertainment

8.0

Crew

8.6

Food

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Singapore Airlines
8.1
Very Good
1,407 reviews
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Comfort

8.0

Entertainment

8.0

Crew

8.6

Food

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Cathay Pacific
7.6
Good
1,064 reviews
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Comfort

8.0

Entertainment

8.0

Crew

8.6

Food

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Qantas Airways
7.5
Good
942 reviews
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Comfort

8.0

Entertainment

8.0

Crew

8.6

Food

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
China Southern
7.5
Good
119 reviews
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Comfort

8.0

Entertainment

8.0

Crew

8.6

Food

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Etihad Airways
7.4
Good
1,309 reviews
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Comfort

8.0

Entertainment

8.0

Crew

8.6

Food

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

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?

    Located just 7.5 km from the city centre, Sydney Kingsford Smith is the airport most travellers will use when flying to Sydney from London Heathrow. Booking flights from London Heathrow to Kingsford Smith (SYD) should be relatively easy as there are 3 daily inbound flights from London Heathrow from 14 different airlines.

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

    Departing from London Heathrow Airport to Sydney will take you 28h 35m. There are 17008 km between London Heathrow Airport and Sydney. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    China Southern, at $1,118, was found to be the cheapest airline from London Heathrow Airport to Sydney.Alternate airlines to your destination round-trip include Air China and China Eastern. China Southern is 45% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest flights from London Heathrow Airport to Sydney?

    Looking for the cheapest flight from London Heathrow Airport to Sydney? While on average our users pay $2,165, our data indicates the cheapest price to be $1,203. The most popular route (London Heathrow - Sydney Kingsford Smith), is priced around $1,052.

  • 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 holiday 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 $1,062). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of $1,723). 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
Wollongong
Katoomba
Penrith
Terrigal
Manly
Randwick
Lithgow
Coogee
Leura
Bondi Beach
Cronulla

Browse thousands of different options on Cheapflights for your next trip

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Fly from Heathrow to Sydney on these airlines

Choose from the following airlines for your flight from Heathrow to Sydney. Flights are based on user searches made on Cheapflights and were last updated on 21 November 2025.
China Southern flights from London Heathrow to Sydney Kingsford Smith
Singapore Airlines flights from London Heathrow to Sydney Kingsford Smith
Malaysia Airlines flights from London Heathrow to Sydney Kingsford Smith

Top 10 airlines flying from Heathrow to Sydney

Discover the top 10 airlines that operate flights from Heathrow to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 21 November 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest$1,118Average$1,587FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest$1,198Average$2,453FlexibilityNo cancel feeOn-time67%
Search Air China flights
China EasternCheapest$1,347Average$1,766FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air IndiaCheapest$1,520Average$2,118FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Malaysia AirlinesCheapest$1,555Average$1,987FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
China AirlinesCheapest$1,584Average$1,730FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Etihad AirwaysCheapest$1,589Average$2,731FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Cathay PacificCheapest$1,683Average$1,900FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
British AirwaysCheapest$1,697Average$1,960FlexibilityNo cancel feeOn-time70%
Search British Airways flights
EmiratesCheapest$1,752Average$2,317FlexibilityNo cancel feeOn-time75%
Search Emirates flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Heathrow to Sydney via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Sydney.

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.

Can Cheapflights notify me if prices for flights from Heathrow to Sydney become cheaper?

Of course! You can now track prices for flights from Heathrow to Sydney and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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