Cheap flights from London Heathrow Airport to Sydney from £422

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
17 May — 24 May1
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 September, booked 60 days in advance, depart on a Monday or Tuesday and return on a Wednesday

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 17 April 2026.

Wed 21/1021:20
LHR
-
SYD
3 stops49h 40m
China Eastern
Wed 11/1121:30
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 12/4£739
Wed 28/1021:00
LHR
-
SYD
1 stop29h 35m
China Eastern
Wed 11/1121:30
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 16/4£753
Sat 31/1021:00
LHR
-
SYD
1 stop29h 35m
China Eastern
Thu 12/1121:30
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 14/4£762
Mon 2/1121:00
LHR
-
SYD
1 stop29h 35m
China Eastern
Mon 16/1121:30
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 13/4£764
Sun 20/922:40
LHR
-
SYD
1 stop31h 10m
Air China
Tue 20/1020:40
SYD
-
LHR
1 stop33h 45m
Air China
Deal found 13/4£765
Mon 26/1021:00
LHR
-
SYD
1 stop29h 35m
China Eastern
Wed 4/1121:30
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 15/4£767
Sun 18/1021:20
LHR
-
SYD
3 stops49h 40m
China Eastern
Sun 8/1121:30
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 12/4£770
Sun 27/1221:00
LHR
-
SYD
1 stop29h 35m
China Eastern
Sun 17/112:00
SYD
-
LHR
1 stop40h 30m
China Eastern
Deal found 14/4£772
Tue 10/1122:00
LHR
-
SYD
1 stop24h 25m
China Southern
Wed 25/1115:15
SYD
-
LHR
1 stop38h 20m
China Southern
Deal found 12/4£773
Mon 19/1021:20
LHR
-
SYD
2 stops49h 40m
China Eastern
Wed 28/1021:30
SYD
-
LHR
1 stop31h 00m
China Eastern
Deal found 15/4£773
Wed 28/1021:00
LHR
-
SYD
1 stop29h 35m
China Eastern
Wed 18/1112:00
SYD
-
LHR
1 stop40h 30m
China Eastern
Deal found 12/4£774

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 17 April 2026.

Round-trip from

£765

One-way from

£422

Popular in

December

Cheapest in

May

Average price

£980

Good round-trip deal

£1,107 or less

Good one-way deal

£867 or less
Air China
  • Air China
  • 20/9-20/10
  • 2 total stops
  • 64h 55m total
  • London to Sydney
Air China
  • Air China
  • 2/6
  • 1 total stop
  • 31h 10m total
  • London to Sydney
Highest demand for flights based on searches. 7% potential increase in price (£64 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£22 potential savings vs. average return price).
Average for round-trip flights in April 2026
Price to beat on a round-trip flight from London Heathrow to Sydney Kingsford Smith.
Price to beat on a one-way flight from London Heathrow to Sydney Kingsford Smith.

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 858,174 searches. Data last updated 17 April 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 14/5

21:20-08:00

2 stops49h 40m

Sydney Kingsford Smith

Mon 1/6

20:30-18:40

1 stop31h 10m

£922
Fastest return journey

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 15/5

09:30-16:50

1 stop22h 20m

Sydney Kingsford Smith

Sun 17/5

15:40-12:45

1 stop30h 05m

£994

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 12/6

09:30-16:50

1 stop22h 20m

Sydney Kingsford Smith

Mon 29/6

21:30-18:45

1 stop30h 15m

£994

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 1/10

21:45-18:25

1 stop35h 40m

Sydney Kingsford Smith

Wed 21/10

21:00-12:05

1 stop25h 05m

£1,001

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 4/6

18:55-08:15

1 stop28h 20m

Sydney Kingsford Smith

Mon 8/6

10:15-17:50

1 stop40h 35m

£1,029

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 1/10

19:15-10:45

2 stops54h 30m

Sydney Kingsford Smith

Thu 22/10

22:10-16:30

1 stop28h 20m

£1,078

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 22/9

22:40-19:10

2 stops35h 30m

Sydney Kingsford Smith

Fri 2/10

21:05-15:10

2 stops27h 05m

£1,114

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 14/8

19:15-10:45

2 stops54h 30m

Sydney Kingsford Smith

Thu 17/9

22:10-16:30

1 stop27h 20m

£1,153

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 1/8

14:45-06:10

1 stop30h 25m

Sydney Kingsford Smith

Tue 1/9

21:30-07:00

1 stop42h 30m

£1,206

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 15/9

20:55-10:45

2 stops52h 50m

Sydney Kingsford Smith

Mon 28/9

22:10-16:30

1 stop27h 20m

£1,213

Flights are sorted by cheapest return flights first.

Deals found on 11/4

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

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 10 April 2026.

The best time to book flights from London Heathrow Airport to Sydney is 60 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London Heathrow Airport to Sydney?

Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of £827). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of £1,312). 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 17 April 2026.

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.

How much does it cost for a return flight from London Heathrow Airport to Sydney?

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 17 April 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Sydney, such as Singapore Airlines,Cathay Pacific, andChina Southern. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.0

Entertainment

8.0

Food

7.8

Boarding

8.3

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

Comfort

8.0

Entertainment

8.0

Food

7.8

Boarding

8.3

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

Comfort

8.0

Entertainment

8.0

Food

7.8

Boarding

8.3

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

Comfort

8.0

Entertainment

8.0

Food

7.8

Boarding

8.3

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

Comfort

8.0

Entertainment

8.0

Food

7.8

Boarding

8.3

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

Comfort

8.0

Entertainment

8.0

Food

7.8

Boarding

8.3

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

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 airports serve London Heathrow to Sydney flights?

    London Heathrow and Sydney Kingsford Smith Airport are both the biggest airports in their respective countries and so, when using them, planning pays off. They are both very well connected with local transport, offering high speed trains, buses, taxis and ride share connections from central London or to central Sydney. If you’re short on time at departure, or travelling at peak times, it’s worth taking the Fast-Track Service through London Heathrow. It costs around £13 and is available to all passengers when booked online, at least 24h in advance. You’ll find excellent lounge and shopping facilities in Heathrow. Both airports have hotels on the airport campus.

  • Which airlines fly directly from London Heathrow to Sydney (SYD)?

    There are currently no direct flights to Sydney from Heathrow Airport, London, but there is a lot of choices on this route. For example, British Airways and Cathay Pacific both fly London Heathrow to Sydney via Hong Kong (HKG). Singapore Airlines will take you through its hub of Singapore Airport (SIN), while Virgin takes the US route to Sydney via Los Angeles (LAX). Delta Air Lines also connects you through the US, in this case San Francisco (SFO). Korean Air connects with Sydney via Incheon International Airport (ICN) in South Korea.

  • What are the stopover options between London Heathrow to Sydney?

    The number of stopovers and the length of time waiting is probably the most important consideration on this route. You can save a lot of money by taking a flight with more than one stopover but the cost then is time. For example, Lufthansa and ANA share this route via two stopovers: Frankfurt and Hong Kong. It’s generally a much cheaper flight but takes extra time - sometimes up to 54h. The stopovers on single connection flights can be lengthy too. For example, flights with British Airways via Hong Kong can have stopovers with durations of 10-19h, so make sure you check these when booking.

  • Do I need a passport or visa to fly from London Heathrow to Sydney?

    Yes, British Citizens travelling on UK passports will need to obtain a tourist eVisitor visa for Australia. This will allow you to stay in the country for up to three months. There’s no fee for this and it must be obtained online in advance from the Australian Department of Home Affairs. If you plan to stay longer than three months you can apply for a Tourist Stream visitor visa from the same source. It costs around A$145 (£80). Your passport for both visas must be valid for the dates you plan to be in the country. The visa dates begin on the date of issue.

  • What airport do you fly into for flights to Sydney from London Heathrow?

    For a flight from London Heathrow to Sydney, you will be flying into Kingsford Smith. Sydney Kingsford Smith (SYD) is just 4.6 mi from the center of the city. Kingsford Smith is the only Sydney airport and it handles 3 inbound flights from London Heathrow per day. 29 airlines have flights to Sydney Kingsford Smith from London Heathrow on a regular basis.

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

    A quick flight from London Heathrow Airport to Sydney can take about 22h 20m. China Eastern provides one of the quickest options available for as low as £994. There are 10568 mi between London Heathrow Airport and Sydney. This flight may include one or multiple stops.

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

    Flying on Hainan Airlines is currently your cheapest option to Sydney, with prices starting at £202. Additional return tickets that might be worth considering are offered by Air China and China Southern, with the lowest prices starting at £525 and £543, respectively. These flights start at 79% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is Air China, with whom users have recently found tickets for as low as £335. However, be on the lookout for offers from Tianjin Airlines and Hainan Airlines, as they are both options that can get you from London Heathrow Airport to Sydney for a low price.

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

    While on average a flight from London Heathrow Airport to Sydney is generally £4,274, our data shows the cheapest flight currently is £618. When looking at the most popular route, (London Heathrow - Sydney Kingsford Smith), you can expect to pay £718 for that flight.

  • Where are the most common stopover locations when flying from London Heathrow Airport to Sydney?

  • What are some popular things to do or see while on a stopover in Singapore?

    Sentosa, Merlion, and Masjid Sultan are currently the most popular points of interest in Singapore at the moment. Sentosa, Merlion, and Masjid Sultan are located about 13.4 mi, 10.5 mi, and 9.8 mi, respectively from Singapore Changi. Travellers in need of a car in Singapore can hire one for about £80 per day.

  • What are some popular points of interest to see during a stopover in Abu Dhabi?

    Most Abu Dhabi visitors opt to spend their time at Etihad Towers, Emirates Palace, and Yas Waterworld. Etihad Towers, Emirates Palace and Yas Waterworld are located about 20.8 mi, 21.1 mi, and 5.0 mi, respectively from Abu Dhabi Zayed Intl if you are interested in checking them out. Those on a stopover in Abu Dhabi in need of a car hire can book one at Abu Dhabi Zayed Intl for about £16.

  • What are points of interest worth seeing during a stopover in Hong Kong?

    Hong Kong travellers tend to visit Shatin Baptist Church, Kowloon Mosque and Islamic Centre, and Hopewell Centre more than any other attractions. Those on a layover in Hong Kong interested in visiting Shatin Baptist Church, Kowloon Mosque and Islamic Centre, or Hopewell Centre can do so by travelling 18.3 mi, 16.2 mi, and 16.3 mi, respectively from Hong Kong Intl.

  • Where are the least popular stopover locations for London Heathrow Airport to Sydney flights?

  • 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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Sydney (average of £827). Flying from London Heathrow Airport to Sydney in December is currently the most expensive (average of £1,312). 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
Wollongong
Parramatta
Coogee
Manly

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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 17 April 2026.

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 858,174 searches. Data last updated 17 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Hainan AirlinesCheapest£202Average£766FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Air ChinaCheapest£525Average£758FlexibilityNo cancel feeOn-time67%
Search Air China flights
China EasternCheapest£573Average£770FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Asiana AirlinesCheapest£671Average£1,393FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
SWISSCheapest£716Average£1,109FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Turkish AirlinesCheapest£717Average£959FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
China AirlinesCheapest£755Average£868FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Air New ZealandCheapest£759Average£1,214FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
LufthansaCheapest£816Average£943FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
EmiratesCheapest£822Average£1,067FlexibilityNo cancel feeOn-time75%
Search Emirates flights

Fly with Cheapflights

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

Deals for Heathrow to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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?

Yes, we can. To see specific flights from Heathrow to Sydney with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights offers price alerts on Heathrow to Sydney flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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