Cheap flights from Sydney to London Heathrow Airport from $774

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 1/2. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — LHR
17 Jan — 24 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Sydney Kingsford Smith to London Heathrow are usually found in October or February, booked 51 days in advance, depart on a Monday or Tuesday and return on a Thursday

Cheap flight deals from Sydney to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Sydney to Heathrow
Explore the most affordable flight options available from Sydney to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2025.

Tue 23/1221:30SYD - LHR
1 stop31h 00mChina Eastern
Sat 9/521:20LHR - SYD
1 stop30h 15mChina Eastern
Deal found 15/12$1,820
Tue 23/1219:40SYD - LHR
1 stop31h 40mMultiple Airlines
Sat 9/521:20LHR - SYD
1 stop30h 15mMultiple Airlines
Deal found 16/12$1,894
Sun 21/1219:40SYD - LHR
2 stops33h 15mHainan Airlines
Mon 29/1221:00LHR - SYD
2 stops31h 20mHainan Airlines
Deal found 18/12$1,918
Thu 25/1221:00SYD - LHR
2 stops31h 35mMultiple Airlines
Mon 29/1221:00LHR - SYD
3 stops46h 55mMultiple Airlines
Deal found 18/12$1,995
Sat 27/1221:00SYD - LHR
1 stop31h 55mMultiple Airlines
Sat 17/121:00LHR - SYD
2 stops46h 55mMultiple Airlines
Deal found 16/12$2,001
Thu 25/1221:00SYD - LHR
2 stops31h 35mHainan Airlines
Mon 29/1221:00LHR - SYD
2 stops31h 20mHainan Airlines
Deal found 18/12$2,018
Tue 23/1219:40SYD - LHR
1 stop31h 40mHainan Airlines
Mon 29/1221:00LHR - SYD
2 stops31h 20mHainan Airlines
Deal found 17/12$2,071
Sun 21/1219:40SYD - LHR
2 stops33h 15mHainan Airlines
Sun 28/1221:15LHR - SYD
1 stop30h 40mHainan Airlines
Deal found 17/12$2,108
Sun 28/1221:00SYD - LHR
2 stops31h 55mMultiple Airlines
Sat 17/121:00LHR - SYD
2 stops46h 55mMultiple Airlines
Deal found 15/12$2,116
Thu 25/1221:00SYD - LHR
2 stops31h 35mHainan Airlines
Sun 28/1221:15LHR - SYD
1 stop30h 40mHainan Airlines
Deal found 18/12$2,117

Find flight deals from Sydney to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Heathrow (LHR). 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 18 December 2025.

Round-trip from

$1,658

One-way from

$774

Popular in

December

Cheapest in

October

Average price

$2,577

Good round-trip deal

$2,086 or less

Good one-way deal

$1,414 or less
Vietnam Airlines
  • Vietnam Airlines
  • 4/5-26/5
  • 2 total stops
  • 68h 00m total
  • Sydney to London
1/2
  • 1/2
  • 3 total stops
  • 31h 10m total
  • Sydney to London
Highest demand for flights based on searches. 8% potential increase in price ($284 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($86 potential savings vs. average return price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from Sydney Kingsford Smith to London Heathrow.
Price to beat on a one-way flight from Sydney Kingsford Smith to London Heathrow.

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sydney to Heathrow 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 18 December 2025.
Use the filters below to find and compare flights from Sydney to London Heathrow Airport that are best for you.

Fly from

Sydney

Fly to

Heathrow

Route

Depart

Return

Price

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sat 9/5

10:15-17:50

2 stops40h 35m

London Heathrow

Thu 28/5

19:10-08:15

1 stop28h 05m

$1,702

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sat 9/5

14:15-17:50

1 stop36h 35m

London Heathrow

Mon 25/5

18:55-12:15

1 stop32h 20m

$1,711

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Mon 2/3

22:10-16:55

1 stop29h 45m

London Heathrow

Wed 8/4

21:10-10:45

1 stop28h 35m

$1,714

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sun 3/5

21:10-15:20

2 stops27h 10m

London Heathrow

Thu 28/5

06:30-19:15

2 stops27h 45m

$1,720

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Tue 5/5

21:10-15:20

2 stops27h 10m

London Heathrow

Mon 25/5

06:30-19:15

2 stops27h 45m

$1,720

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Fri 13/3

21:15-14:10

2 stops27h 55m

London Heathrow

Mon 6/4

18:30-19:15

2 stops39h 45m

$1,721

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sat 14/3

21:15-16:10

2 stops29h 55m

London Heathrow

Sun 12/4

22:35-19:15

2 stops35h 40m

$1,721

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Mon 18/5

10:15-16:55

2 stops63h 40m

London Heathrow

Tue 9/6

19:50-08:15

1 stop27h 25m

$1,723

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sat 14/3

21:45-06:40

1 stop43h 55m

London Heathrow

Tue 7/4

14:45-17:00

1 stop41h 15m

$1,749

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sat 14/3

21:45-14:30

1 stop27h 45m

London Heathrow

Wed 8/4

21:45-06:10

1 stop23h 25m

$1,749

Flights are sorted by cheapest return flights first.

Deals found on 16/12

Showing 1-10 of 18 results
1
2

Best time to book a flight from Sydney to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Sydney 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 Sydney to London Heathrow Airport

How far ahead should I book a flight from Sydney to London Heathrow Airport?

Use this chart to determine the optimal time to book a return flight from Sydney to Heathrow. Price data was last updated on 12 December 2025.

To ensure you get the cheapest price possible for a flight from Sydney to London Heathrow Airport, you should look to book at least 51 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, October is the cheapest month in which you can book a flight from Sydney to London Heathrow Airport (average of $1,217). Flying from Sydney to London Heathrow Airport in December is currently the most expensive (average of $1,861). 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 SYD to LHR?

Find hourly flight availability from Sydney to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 December 2025.

It’s optimal to fly from Sydney to London Heathrow Airport in the evening. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight at midday.

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

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

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

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 18 December 2025.
Read through reviews of airlines operating flights from Sydney to London Heathrow Airport, such as Singapore Airlines, Cathay Pacific, andQantas Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

8.0

Crew

8.6

Overall

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

Entertainment

8.0

Crew

8.6

Overall

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

Entertainment

8.0

Crew

8.6

Overall

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

Entertainment

8.0

Crew

8.6

Overall

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

Entertainment

8.0

Crew

8.6

Overall

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

Entertainment

8.0

Crew

8.6

Overall

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

Related info for your journey

Find useful and relevant information for your journey from Sydney to Heathrow. 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 from for flights from Sydney to London Heathrow?

    Sydney Kingsford Smith (SYD) is the airport you will fly out of if you book a flight from Sydney to London Heathrow. You should not have trouble finding flights to London Heathrow from Kingsford Smith; the airport handles an average of 3 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 25 airlines have flights from the Sydney airport to London Heathrow. It is only a 7.5 km journey to Kingsford Smith (SYD) from Sydney’s city centre.

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

    Vietnam Airlines, China Airlines, and Turkish Airlines can get you from Sydney to London Heathrow Airport in just under 27h 10m. Your travel time can differ by up to 13h 25m. Airlines will cover a distance of 17008 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Currently priced at $1,144, Air China will fly you from Sydney to London Heathrow Airport and back. In addition to Air China, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from China Southern and China Eastern - these airlines can fly you to your destination from $1,153 and $1,247, respectively. Air China is 41% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapet airlines for a one-way flight from Sydney to London Heathrow Airport are Etihad Airways ($504), Tianjin Airlines ($520), and China Southern ($573).

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

    While on average a flight from Sydney to London Heathrow Airport is generally $8,030, our data shows the cheapest flight currently is $1,151. When looking at the most popular route, (Sydney Kingsford Smith - London Heathrow), you can expect to pay $1,168 for that flight.

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

  • 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 can be visited by traveling about 21.6 km, 16.9 km, and 21.6 km respectively from Singapore Changi. Travellers can rent a car at Singapore Changi for an average daily rate of $131 to make sightseeing during their stopover a little easier.

  • What are points of interest worth seeing during a stopover in Kuala Lumpur?

    Berjaya Times Square, Petronas Towers, and National Mosque of Malaysia are currently the most popular points of interest in Kuala Lumpur. Berjaya Times Square, Petronas Towers, and National Mosque of Malaysia can be visited by travelling about 44.9 km, 46.6 km, and 44.8 km respectively from Kuala Lumpur Intl. Travellers in need of a car in Kuala Lumpur can hire one for about $39 per day.

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

  • Can I find deals for flights from Sydney to Heathrow that include hotel bookings?

    Yes. In addition to deals on Sydney to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Sydney to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sydney to Heathrow.

  • Can I find deals for business class flights from Sydney to Heathrow?

    Yes. Cheapflights offers flight deals from Sydney to Heathrow 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 Sydney to London Heathrow Airport?

    Currently, October is the cheapest month in which you can book a flight from Sydney to London Heathrow Airport (average of $1,217). Flying from Sydney to London Heathrow Airport in December is currently the most expensive (average of $1,861). 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
Kingston upon Thames
Salisbury
Hounslow
Horsham
Southall
Chatham
Dorking
Dover
Braintree
Gatwick
Chertsey

Browse thousands of different options on Cheapflights for your next trip

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Fly from Sydney to Heathrow on these airlines

Choose from the following airlines for your flight from Sydney to Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 18 December 2025.

Top 10 airlines flying from Sydney to Heathrow

Discover the top 10 airlines that operate flights from Sydney to Heathrow. 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 18 December 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest$1,153Average$1,649FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest$1,154Average$1,618FlexibilityNo cancel feeOn-time67%
Search Air China flights
China EasternCheapest$1,247Average$1,485FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Turkish AirlinesCheapest$1,400Average$1,600FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Air IndiaCheapest$1,407Average$1,777FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
China AirlinesCheapest$1,417Average$1,677FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Japan AirlinesCheapest$1,457Average$1,965FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
SWISSCheapest$1,500Average$2,350FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Qatar AirwaysCheapest$1,584Average$2,181FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Vietnam AirlinesCheapest$1,605Average$1,932FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from Sydney today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from Sydney to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Sydney to Heathrow with no change fees?

Yes! Cheapflights helps users easily find flights from Sydney to Heathrow with no change fees.

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

Yes, Cheapflights offers price alerts on Sydney to Heathrow 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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