Cheap flights from London Heathrow Airport to Sydney from £419

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 15/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
16 Oct — 23 Oct1
1 adult
1 adult, Economy

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

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 16 September 2025.

Round-trip from

£693

One-way from

£419

Popular in

December

Cheapest in

March

Average price

£851

Good round-trip deal

£1,020 or less

Good one-way deal

£937 or less
China Southern
  • China Southern
  • 27/10-10/11
  • 2 total stops
  • 77h 30m total
  • London to Sydney
Air China
  • Air China
  • 15/11
  • 2 total stops
  • 54h 55m total
  • London to Sydney
Highest demand for flights based on searches. 11% potential increase in price (£88 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£21 potential savings vs. average return price).
Average for round-trip flights in September 2025
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.

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 16 September 2025.

Mon 27/1022:00LHR - SYD
1 stop35h 20mChina Southern
Mon 10/1111:25SYD - LHR
1 stop42h 10mChina Southern
Deal found 15/9£693
Mon 3/1122:00LHR - SYD
1 stop35h 20mChina Southern
Mon 24/1111:25SYD - LHR
1 stop42h 10mChina Southern
Deal found 15/9£696
Wed 1/1021:20LHR - SYD
1 stop26h 40mChina Eastern
Wed 22/1013:00SYD - LHR
2 stops39h 40mChina Eastern
Deal found 15/9£697
Mon 3/1122:00LHR - SYD
1 stop35h 20mChina Southern
Thu 13/1122:00SYD - LHR
1 stop31h 35mChina Southern
Deal found 15/9£698
Mon 10/1121:30LHR - SYD
2 stops35h 50mChina Southern
Mon 1/1209:20SYD - LHR
2 stops43h 35mChina Southern
Deal found 15/9£698
Wed 31/1217:40LHR - SYD
1 stop34h 50mAir China
Sun 1/220:40SYD - LHR
1 stop32h 10mAir China
Deal found 15/9£699
Sat 1/1121:05LHR - SYD
3 stops34h 45mMultiple Airlines
Tue 11/1115:55SYD - LHR
2 stops35h 15mMultiple Airlines
Deal found 15/9£700
Wed 15/1019:15LHR - SYD
2 stops39h 10mChina Southern
Wed 22/1011:15SYD - LHR
2 stops40h 50mChina Southern
Deal found 15/9£701
Sat 25/1021:00LHR - SYD
2 stops37h 20mChina Southern
Thu 13/1111:25SYD - LHR
1 stop42h 10mChina Southern
Deal found 15/9£703
Wed 24/1217:15LHR - SYD
2 stops33h 20mChina Southern
Wed 21/122:00SYD - LHR
1 stop31h 35mChina Southern
Deal found 15/9£703
Tue 4/1117:40LHR - SYD
1 stop34h 50mMultiple Airlines
Wed 12/1121:15SYD - LHR
2 stops27h 55mMultiple Airlines
Deal found 15/9£704
Mon 29/1217:40LHR - SYD
1 stop34h 50mAir China
Wed 28/120:40SYD - LHR
1 stop32h 10mAir China
Deal found 15/9£706

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 16 September 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

Tue 3/3

21:30-20:20

2 stops35h 50m

Sydney Kingsford Smith

Tue 24/3

11:25-14:00

2 stops37h 35m

£702

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 4/10

21:00-20:25

2 stops61h 25m

Sydney Kingsford Smith

Sat 25/10

09:45-15:00

2 stops39h 15m

£760

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 4/2

13:55-17:55

1 stop41h 00m

Sydney Kingsford Smith

Wed 4/3

16:35-06:40

1 stop25h 05m

£862

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 7/2

21:15-12:15

1 stop28h 00m

Sydney Kingsford Smith

Mon 16/3

22:10-16:55

1 stop29h 45m

£866

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 3/11

21:15-12:15

1 stop28h 00m

Sydney Kingsford Smith

Tue 2/12

22:10-16:55

1 stop29h 45m

£870

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 31/10

21:15-12:15

1 stop28h 00m

Sydney Kingsford Smith

Tue 2/12

22:10-16:55

1 stop29h 45m

£870

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 1/11

13:55-06:35

1 stop29h 40m

Sydney Kingsford Smith

Tue 2/12

16:35-06:40

1 stop25h 05m

£886

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Thu 30/10

11:00-09:50

1 stop35h 50m

Sydney Kingsford Smith

Mon 8/6

10:15-17:50

1 stop40h 35m

£894

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 4/2

08:50-06:35

1 stop34h 45m

Sydney Kingsford Smith

Sat 21/3

21:30-06:40

1 stop44h 10m

£901

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 3/2

13:55-17:55

1 stop41h 00m

Sydney Kingsford Smith

Wed 18/3

16:35-18:10

1 stop36h 35m

£907

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 24 results
1
2
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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 12 September 2025.

The best time to book flights from London Heathrow Airport to Sydney is 90 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 £985). Flying from London Heathrow Airport to Sydney in July is currently the most expensive (average of £1,725). 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 September 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 25% on flights from London Heathrow Airport to Sydney by exploring options for tickets in the afternoon.

What is the cheapest day to fly from London Heathrow Airport to Sydney?

Use this chart to determine the cheapest time to fly return from Heathrow to Sydney. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London Heathrow Airport to Sydney flight should consider departing on Monday afternoons when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 16 September 2025.
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.

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

8.0

Food

7.7

Overall

8.1

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.

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

8.0

Food

7.7

Overall

8.1

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.

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

8.0

Food

7.7

Overall

8.1

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.

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

8.0

Food

7.7

Overall

8.1

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.

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

8.0

Food

7.7

Overall

8.1

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.

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

8.0

Food

7.7

Overall

8.1

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 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. 30 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 28h. China Southern provides one of the quickest options available for as low as £866. 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 £332. Additional return tickets that might be worth considering are offered by Air China and China Southern, with the lowest prices starting at £504 and £511, respectively. These flights start at 65% 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 £426. However, be on the lookout for offers from China Southern and China Eastern, 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 £4,258, our data shows the cheapest flight currently is £843. When looking at the most popular route, (London Heathrow - Sydney Kingsford Smith), you can expect to pay £497 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 Universal Studios Singapore are currently the most popular points of interest in Singapore at the moment. Sentosa, Merlion, and Universal Studios Singapore are located about 13.4 mi, 10.5 mi, and 13.4 mi, respectively from Singapore Changi. Travellers in need of a car in Singapore can hire one for about £59 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, Sheikh Zayed Mosque, and Emirates Park Zoo. Etihad Towers, Sheikh Zayed Mosque and Emirates Park Zoo are located about 20.8 mi, 11.2 mi, and 7.9 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 £19.

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

    Hong Kong travellers tend to visit Hong Kong Disneyland, Shatin Baptist Church, and Hopewell Centre more than any other attractions. Those on a layover in Hong Kong interested in visiting Hong Kong Disneyland, Shatin Baptist Church, or Hopewell Centre can do so by travelling 7.8 mi, 18.3 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 £985). Flying from London Heathrow Airport to Sydney in July is currently the most expensive (average of £1,725). 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
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 16 September 2025.

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 16 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Hainan AirlinesCheapest£332Average£1,315FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Turkish AirlinesCheapest£715Average£967FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Vietnam AirlinesCheapest£728Average£1,051FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
China AirlinesCheapest£728Average£831FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
SWISSCheapest£729Average£901FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Austrian AirlinesCheapest£734Average£831FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Air New ZealandCheapest£757Average£1,181FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
LufthansaCheapest£819Average£1,013FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£857Average£1,000FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest£858Average£1,248FlexibilityNo cancel feeOn-time67%
Search Air Canada 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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