Cheap flights from Sydney to London Heathrow Airport from £333

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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — LHR
12 Oct — 19 Oct1
1 adult
1 adult, Economy

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 12 September 2025.

Round-trip from

£674

One-way from

£333

Popular in

December

Cheapest in

October

Average price

£994

Good round-trip deal

£1,156 or less

Good one-way deal

£687 or less
15/10-15/11
  • 15/10-15/11
  • 5 total stops
  • 70h 25m total
  • Sydney to London
10/11
  • 10/11
  • 3 total stops
  • 36h 15m total
  • Sydney to London
Highest demand for flights based on searches. 11% potential increase in price (£94 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£25 potential savings vs. average return price).
Average for round-trip flights in September 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 12 September 2025.

Wed 15/1015:50SYD - LHR
2 stops34h 50mMultiple Airlines
Sat 15/1122:00LHR - SYD
3 stops35h 35mMultiple Airlines
Deal found 11/9£674
Tue 14/1021:55SYD - LHR
2 stops34h 30mTurkish Airlines
Tue 11/1106:35LHR - SYD
1 stop25h 45mTurkish Airlines
Deal found 10/9£675
Tue 11/1112:10SYD - LHR
3 stops40h 20mChina Eastern
Tue 25/1121:00LHR - SYD
1 stop26h 00mChina Eastern
Deal found 9/9£676
Mon 10/1113:30SYD - LHR
3 stops39h 00mChina Eastern
Sun 30/1121:00LHR - SYD
1 stop29h 35mChina Eastern
Deal found 11/9£676
Sun 19/1021:55SYD - LHR
2 stops45h 55mTurkish Airlines
Sun 16/1117:45LHR - SYD
1 stop38h 35mTurkish Airlines
Deal found 10/9£677
Sat 25/1013:45SYD - LHR
2 stops37h 25mMultiple Airlines
Sat 1/1121:00LHR - SYD
2 stops49h 25mMultiple Airlines
Deal found 10/9£678
Sat 18/1020:40SYD - LHR
1 stop31h 05mMultiple Airlines
Mon 3/1117:40LHR - SYD
2 stops39h 15mMultiple Airlines
Deal found 11/9£679
Wed 22/1022:15SYD - LHR
1 stop30h 45mChina Southern
Thu 30/1022:00LHR - SYD
1 stop35h 20mChina Southern
Deal found 11/9£681
Tue 21/1015:50SYD - LHR
2 stops28h 00mMultiple Airlines
Mon 24/1121:05LHR - SYD
3 stops34h 45mMultiple Airlines
Deal found 9/9£681
Wed 22/1012:00SYD - LHR
1 stop40h 40mChina Eastern
Wed 29/1021:00LHR - SYD
1 stop26h 00mChina Eastern
Deal found 11/9£682
Fri 24/1021:55SYD - LHR
2 stops28h 05mMultiple Airlines
Tue 18/1116:35LHR - SYD
2 stops27h 00mMultiple Airlines
Deal found 11/9£684

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 12 September 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

Sun 12/10

15:50-09:50

2 stops28h 00m

London Heathrow

Fri 31/10

06:35-19:20

2 stops25h 45m

£718

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Tue 25/11

21:30-14:30

1 stop28h 00m

London Heathrow

Mon 8/12

13:55-06:35

1 stop29h 40m

£761

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Tue 10/2

16:35-06:40

1 stop25h 05m

London Heathrow

Tue 3/3

13:55-17:55

1 stop41h 00m

£763

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Mon 9/2

21:15-22:25

2 stops36h 10m

London Heathrow

Wed 25/2

22:35-19:20

2 stops33h 45m

£766

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sat 14/2

21:15-16:10

2 stops29h 55m

London Heathrow

Mon 2/3

17:45-19:20

2 stops38h 35m

£766

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Thu 2/10

20:55-15:05

2 stops27h 10m

London Heathrow

Thu 23/10

06:30-20:00

2 stops27h 30m

£795

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Tue 28/10

17:35-16:55

2 stops34h 20m

London Heathrow

Fri 31/10

21:15-12:15

1 stop28h 00m

£805

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sat 8/11

21:15-16:10

2 stops29h 55m

London Heathrow

Fri 28/11

06:35-19:20

2 stops25h 45m

£824

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Sun 15/2

21:15-14:55

2 stops28h 40m

London Heathrow

Tue 3/3

06:35-19:20

2 stops25h 45m

£826

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Wed 11/2

21:15-14:55

2 stops28h 40m

London Heathrow

Wed 25/2

19:55-19:20

2 stops36h 25m

£826

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 23 results
1
2
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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 29 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 12 September 2025.

It’s optimal to fly from Sydney to London Heathrow Airport in the morning. By choosing this option you can save up to 32% 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.

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

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 12 September 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.

Crew

8.1

Boarding

7.9

Food

7.3

Comfort

7.6

Overall

7.6

Entertainment

7.8

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

Crew

8.1

Boarding

7.9

Food

7.3

Comfort

7.6

Overall

7.6

Entertainment

7.8

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

Crew

8.1

Boarding

7.9

Food

7.3

Comfort

7.6

Overall

7.6

Entertainment

7.8

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

Crew

8.1

Boarding

7.9

Food

7.3

Comfort

7.6

Overall

7.6

Entertainment

7.8

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

Crew

8.1

Boarding

7.9

Food

7.3

Comfort

7.6

Overall

7.6

Entertainment

7.8

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

Crew

8.1

Boarding

7.9

Food

7.3

Comfort

7.6

Overall

7.6

Entertainment

7.8

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. 15 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 28h. Etihad Airways provides one of the quickest options available for as low as £761. The distance between Sydney and London Heathrow Airport is about 10568 mi. This flight may include one or multiple stops.

  • 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 £619 on this airline. Additional options worth looking into are Air China and China Eastern, starting at £664 and £673 round-trip. China Southern is currently priced 35% 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 £665. While the most popular route (Sydney Kingsford Smith - London Heathrow) can be booked for £600 on average, our data indicates £959 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
Winchester
Chichester
Ipswich
Swindon
Dartford
Eastbourne

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 12 September 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£619Average£982FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£664Average£788FlexibilityNo cancel feeOn-time67%
Search Air China flights
China EasternCheapest£673Average£1,184FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air IndiaCheapest£682Average£867FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Etihad AirwaysCheapest£721Average£921FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Turkish AirlinesCheapest£724Average£972FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Cathay PacificCheapest£737Average£927FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Qatar AirwaysCheapest£747Average£945FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Malaysia AirlinesCheapest£772Average£1,051FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Singapore AirlinesCheapest£782Average£1,009FlexibilityNo 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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