Cheap flights from Sydney to London Heathrow Airport from £344

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 21/10. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — LHR
2 Sep — 9 Sep1
1 adult

Cheapflights Tip: The best prices from Sydney Kingsford Smith to London Heathrow are usually found in October or February, booked 25 days in advance, depart on a Tuesday or Friday and return on a Monday

Cheap 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 28 August 2025.

Round-trip from

£699

One-way from

£344

Popular in

December

Cheapest in

October

Average price

£988

Good round-trip deal

£1,163 or less

Good one-way deal

£691 or less
China Eastern
  • China Eastern
  • 22/10-1/11
  • 2 total stops
  • 66h 40m total
  • Sydney to London
21/10
  • 21/10
  • 2 total stops
  • 36h 50m total
  • Sydney to London
Highest demand for flights based on searches. 11% potential increase in price (£96 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£26 potential savings vs. average return price).
Average for round-trip flights in August 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.

Find flight deals from Sydney to Heathrow

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 28 August 2025.

Wed 22/1012:00SYD - LHR
1 stop40h 40mChina Eastern
Sat 1/1121:00LHR - SYD
1 stop26h 00mChina Eastern
Deal found 27/8£699
Sun 12/1016:40SYD - LHR
1 stop30h 05mEtihad Airways
Tue 18/1120:55LHR - SYD
1 stop34h 00mEtihad Airways
Deal found 26/8£702
Wed 3/911:00SYD - LHR
1 stop40h 40mChina Eastern
Wed 17/921:20LHR - SYD
1 stop26h 40mChina Eastern
Deal found 26/8£704
Sat 25/1012:20SYD - LHR
2 stops40h 10mChina Eastern
Sun 2/1121:00LHR - SYD
1 stop29h 35mChina Eastern
Deal found 27/8£705
Thu 23/1022:15SYD - LHR
1 stop30h 45mChina Southern
Sun 16/1122:00LHR - SYD
1 stop24h 25mChina Southern
Deal found 26/8£705
Thu 23/1022:15SYD - LHR
1 stop30h 45mChina Southern
Mon 3/1122:00LHR - SYD
1 stop35h 20mChina Southern
Deal found 27/8£706
Sun 26/1022:00SYD - LHR
1 stop31h 15mChina Southern
Mon 10/1122:00LHR - SYD
1 stop24h 25mChina Southern
Deal found 26/8£707
Sun 16/1122:00SYD - LHR
1 stop31h 15mChina Southern
Thu 25/1222:00LHR - SYD
1 stop28h 35mChina Southern
Deal found 24/8£708
Sun 26/1022:00SYD - LHR
1 stop31h 15mChina Southern
Thu 20/1122:00LHR - SYD
1 stop35h 20mChina Southern
Deal found 26/8£709
Mon 20/1021:30SYD - LHR
1 stop43h 30mEtihad Airways
Sun 2/1113:55LHR - SYD
1 stop29h 40mEtihad Airways
Deal found 26/8£710
Sun 19/1016:40SYD - LHR
1 stop36h 05mEtihad Airways
Wed 10/620:55LHR - SYD
1 stop24h 15mEtihad Airways
Deal found 26/8£711
Fri 5/912:00SYD - LHR
2 stops39h 40mChina Eastern
Sat 6/921:20LHR - SYD
1 stop30h 15mChina Eastern
Deal found 27/8£711

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 858,174 searches. Data last updated 28 August 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 15/11

21:30-06:40

1 stop44h 10m

London Heathrow

Sun 30/11

08:50-06:35

1 stop34h 45m

£755

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Fri 24/10

21:30-15:15

1 stop27h 45m

London Heathrow

Sun 16/11

20:55-17:55

1 stop34h 00m

£755

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sun 26/10

16:35-06:40

1 stop25h 05m

London Heathrow

Wed 19/11

20:55-06:35

1 stop22h 40m

£755

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Thu 23/10

21:30-07:00

1 stop43h 30m

London Heathrow

Wed 19/11

20:55-06:35

1 stop22h 40m

£755

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sat 25/10

21:30-15:30

1 stop28h 00m

London Heathrow

Mon 17/11

13:55-06:35

1 stop29h 40m

£755

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Wed 29/10

16:35-06:40

1 stop25h 05m

London Heathrow

Sat 8/11

20:55-17:55

1 stop34h 00m

£755

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Tue 28/10

16:35-06:40

1 stop25h 05m

London Heathrow

Sun 9/11

08:50-17:55

1 stop22h 05m

£757

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sat 25/10

21:30-15:30

1 stop28h 00m

London Heathrow

Mon 10/11

08:50-17:55

1 stop22h 05m

£757

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Tue 28/10

16:35-06:40

1 stop25h 05m

London Heathrow

Mon 10/11

08:50-17:55

1 stop22h 05m

£757

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sat 25/10

21:30-15:30

1 stop28h 00m

London Heathrow

Sat 8/11

20:55-06:35

1 stop22h 40m

£757

Flights are sorted by cheapest return flights first.

Deals found on 26/8

Showing 1-10 of 22 results
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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 22 August 2025.

The price you pay for your flight from Sydney to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 25 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Sydney to London Heathrow Airport (average of £112). Flying from Sydney to London Heathrow Airport in August is currently the most expensive (average of £164). 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 28 August 2025.

It’s optimal to fly from Sydney to London Heathrow Airport in the morning. By choosing this option you can save up to 33% on the cost of your flight, compared to a flight in the afternoon.

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 Sunday evenings when fares are most often at their lowest. Thursday afternoons 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 28 August 2025.
See what other customers who have flown with Cathay Pacific, China Southern, andEtihad Airways from Sydney to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.9

Entertainment

7.8

Overall

7.6

Crew

8.1

Comfort

7.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

YYZ - HKG

Overall journey was good. The economy seats on this airbus a350 was the worst . Too narrow and no underthigh support . My next journey from Hongkong to kathmandu was better as the economy seats on airbus a330 was a lot better than on this plane . Cathy should make a note on this . The long haul flights should have at least comfy seats compared to short flights from Hongkong to ktm

Boarding

7.9

Entertainment

7.8

Overall

7.6

Crew

8.1

Comfort

7.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

YYZ - HKG

Overall journey was good. The economy seats on this airbus a350 was the worst . Too narrow and no underthigh support . My next journey from Hongkong to kathmandu was better as the economy seats on airbus a330 was a lot better than on this plane . Cathy should make a note on this . The long haul flights should have at least comfy seats compared to short flights from Hongkong to ktm

Boarding

7.9

Entertainment

7.8

Overall

7.6

Crew

8.1

Comfort

7.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

YYZ - HKG

Overall journey was good. The economy seats on this airbus a350 was the worst . Too narrow and no underthigh support . My next journey from Hongkong to kathmandu was better as the economy seats on airbus a330 was a lot better than on this plane . Cathy should make a note on this . The long haul flights should have at least comfy seats compared to short flights from Hongkong to ktm

Boarding

7.9

Entertainment

7.8

Overall

7.6

Crew

8.1

Comfort

7.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

YYZ - HKG

Overall journey was good. The economy seats on this airbus a350 was the worst . Too narrow and no underthigh support . My next journey from Hongkong to kathmandu was better as the economy seats on airbus a330 was a lot better than on this plane . Cathy should make a note on this . The long haul flights should have at least comfy seats compared to short flights from Hongkong to ktm

Boarding

7.9

Entertainment

7.8

Overall

7.6

Crew

8.1

Comfort

7.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

YYZ - HKG

Overall journey was good. The economy seats on this airbus a350 was the worst . Too narrow and no underthigh support . My next journey from Hongkong to kathmandu was better as the economy seats on airbus a330 was a lot better than on this plane . Cathy should make a note on this . The long haul flights should have at least comfy seats compared to short flights from Hongkong to ktm

Boarding

7.9

Entertainment

7.8

Overall

7.6

Crew

8.1

Comfort

7.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

YYZ - HKG

Overall journey was good. The economy seats on this airbus a350 was the worst . Too narrow and no underthigh support . My next journey from Hongkong to kathmandu was better as the economy seats on airbus a330 was a lot better than on this plane . Cathy should make a note on this . The long haul flights should have at least comfy seats compared to short flights from Hongkong to ktm

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?

    For a flight from Sydney to London Heathrow, you will be flying from 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 outbound flights to London Heathrow per day. 14 airlines have flights to London Heathrow from Sydney Kingsford Smith on a regular basis.

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

    A quick flight from Sydney to London Heathrow Airport can take about 44h 10m. Etihad Airways provides one of the quickest options available for as low as £755. The distance between Sydney and London Heathrow Airport is about 10568 mi.

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

    Our cheapest airline available from Sydney to London Heathrow Airport is China Southern. Our recent data shows that you can find tickets from as low as £602 on this airline. Additional options worth looking into are Air China and China Eastern, starting at £663 and £677 round-trip. China Southern is currently priced 37% below the average price you’ll pay for this route.

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

    Looking at all options, your cheapest flight can be booked for £684. While the most popular route (Sydney Kingsford Smith - London Heathrow) can be booked for £617 on average our data indicates £933 when flying from Sydney to London Heathrow Airport.

  • 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, January is the cheapest month in which you can book a flight from Sydney to London Heathrow Airport (average of £112). Flying from Sydney to London Heathrow Airport in August is currently the most expensive (average of £164). 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
Milton Keynes
Croydon
Hounslow
Gatwick
Slough
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Folkestone
Ipswich
Chichester
Winchester
Eastbourne
Swindon
Dartford

Browse thousands of different options on Cheapflights for your next trip

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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 858,174 searches. Data last updated 28 August 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£602Average£985FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£663Average£780FlexibilityNo cancel feeOn-time67%
Search Air China flights
China EasternCheapest£677Average£1,191FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air IndiaCheapest£686Average£872FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Etihad AirwaysCheapest£719Average£889FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Turkish AirlinesCheapest£728Average£977FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Cathay PacificCheapest£742Average£932FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Qatar AirwaysCheapest£751Average£935FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Malaysia AirlinesCheapest£776Average£1,057FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Singapore AirlinesCheapest£786Average£1,020FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines 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 Sydney to Heathrow?

Cheapflights helps you search for flights from Sydney to Heathrow 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 Sydney to Heathrow?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Sydney to Heathrow for you. Better yet — we are completely free to use.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Sydney to Heathrow flexibly with Cheapflights today.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from Sydney today and book when prices fit your budget.

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