Cheap flights from Sydney to London Heathrow Airport
SYD — LHR
29 Nov — 6 Dec1
Round-trip
1 adult
Economy
Round-trip
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 26 days in advance, depart on a Wednesday or Monday 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 30 October 2025.
Popular in
December
Cheapest in
October
Average price
C$ 1,482
Highest demand for flights based on searches. 11% potential increase in price (C$ 323 potential increase over avg. RT price).
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 round-trip 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
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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 round-trip flight from Sydney to Heathrow. Price data was last updated on 24 October 2025.
Booking 26 days in advance of your planned departure date is, on average, the best time to get cheap flights from Sydney to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 C$ 1,125). Flying from Sydney to London Heathrow Airport in December is currently the most expensive (average of C$ 1,730). 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 30 October 2025.
When flying from Sydney to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 65% versus a flight at noon.
Weekly flight availability from Sydney to London Heathrow Airport
Explore weekly flight availability from Sydney to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 30 October 2025.
The most flights from SYD to LHR are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).
What’s the top layover airport for flights from Sydney to London Heathrow Airport?
Share of one-stop round-trip flights from Sydney to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Abu Dhabi (AUH) – chosen by Cheapflights users on 22% of one-stop itineraries from Sydney to London Heathrow Airport on Cheapflights.
What’s the fastest layover option from Sydney to London Heathrow Airport?
Shortest average travel time for 1-stop one-way flights from Sydney to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Abu Dhabi (AUH) have the shortest average one-way travel time for 1-stop routes: 24h 40m.
What’s the fastest layover option from Sydney to London Heathrow Airport?
Shortest average travel time for 1-stop one-way flights from Sydney to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Abu Dhabi (AUH) have the shortest average one-way travel time for 1-stop routes: 24h 40m.
Which airport typically offers the quickest layover for flights from Sydney to London Heathrow Airport?
Average layover duration for 1-stop one-way flights from Sydney to London Heathrow Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Dubai (DXB) offer the fastest connection on this route, with an average layover time of 2h 24m.
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?
Most people fly from Sydney Kingsford Smith (SYD) if they book a flight from Sydney to London Heathrow. On average, Kingsford Smith has 3 outbound flights to London Heathrow per day from 0 airlines. Sydney Kingsford Smith is conveniently located just 7.5 km from Sydney’s city centre.
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 vacation 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 C$ 1,125). Flying from Sydney to London Heathrow Airport in December is currently the most expensive (average of C$ 1,730). 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.
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2025.
Find the best flight deals on Cheapflights, where travelers 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 goes through 900+ travel sites to look for the best flight deals for flights from Sydney to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
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?
Yes, we can. To see specific flights from Sydney to Heathrow 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 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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