Cheap flights from Sydney to London from $647
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to London departing on 11/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Sydney to London Heathrow Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Sydney and London Heathrow Airport?
What is the cheapest month to fly to London Heathrow Airport?
The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Sydney, with most prices found around $1,604. If you aren’t able to travel during the month of October, then book flights to London Heathrow Airport from Sydney during February instead. Flights to London Heathrow Airport in February, while not as cheap as those in October, still average around $1,657.
What is the cheapest day to depart on your flight to London Heathrow Airport?
Our data shows that Monday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $2,077. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Sydney to London Heathrow Airport for around $2,285.
What is the cheapest time of day to depart on your flight to London Heathrow Airport?
In the evening is the cheapest time of day to fly from Sydney to London Heathrow Airport when you can find flight prices for as low as $1,837. Flying to London Heathrow Airport in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to London Heathrow Airport is at midday when prices are around $2,452.
What is the cheapest Sydney Kingsford Smith to London Heathrow flight route?
Fly from Sydney Kingsford Smith to London Heathrow for the best Sydney Kingsford Smith - London Heathrow flight prices
How far in advance should I book a flight to London Heathrow Airport?
You are more likely to see cheaper flights to London Heathrow Airport from Sydney when booking 26 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $1,998 when searching 26 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Sydney for as low as $1,821 on momondo.
What cabin class options are available on Sydney Kingsford Smith to London Heathrow flights?
There are 3 cabin classes available to choose from on Sydney Kingsford Smith to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Sydney to London Heathrow Airport flights?
You could potentially save up to 1% on your flight if you consider stops on a Sydney to London Heathrow Airport flight.
How have Sydney to London Heathrow Airport flight prices changed over time?
As of June 2025, prices for Sydney to London Heathrow Airport flights are approximately 26% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Sydney Kingsford Smith to London Heathrow?
Hainan Airlines, Air China, and Vietnam Airlines are the most popular carriers operating from Sydney Kingsford Smith to London Heathrow
Which airlines fly to London Heathrow Airport?
Singapore Airlines, Cathay Pacific and Qantas Airways are the top three most popular airlines that fly to London Heathrow Airport from Sydney according to our data. Singapore Airlines is the first choice among our users, with 28% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 29 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Sydney to London Heathrow Airport on average per day?
As of June 2025, 3 flights take off from Sydney and land in London Heathrow Airport each day. The most common flight departure time for this route is 14:00, with 100% of daily flights taking off in the afternoon.
How many flights depart from Sydney to London Heathrow Airport on average per week?
The number of flights available between Sydney and London Heathrow Airport is 21 per week as of June 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.
When to book flights from Sydney to London Heathrow Airport
Cheap Sydney to London Heathrow Airport (SYD to LHR) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Sydney to London Heathrow Airport
How far is Sydney Kingsford Smith to London Heathrow by plane?
A flight from Sydney Kingsford Smith to London Heathrow will travel around 17004.5 km. Typically, this will take 25h 55m by plane in normal conditions.
When did momondo last update prices for flights from Sydney Kingsford Smith Airport to London Heathrow Airport?
Prices for flights from Sydney Kingsford Smith Airport to London Heathrow Airport are updated daily.
How many operators does momondo search for flights from Sydney Kingsford Smith Airport to London Heathrow Airport?
The number of operators available for flights from Sydney Kingsford Smith Airport to London Heathrow Airport is 29 as of June 2025.
How old do you have to be to fly from Sydney Kingsford Smith Airport to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Sydney Kingsford Smith Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Sydney to London Heathrow Airport?
Based on momondo bookings for flights between Sydney and London Heathrow Airport, the leading plane model is Airbus A380-800, making up 97.97% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 1.52% and Boeing 777-300ER with 0.51%.
What is the most popular airline from Sydney to London Heathrow Airport?
Based on momondo bookings for flights between Sydney and London Heathrow Airport, the leading airline is Singapore Airlines, making up 13% of the total bookings. Other popular airlines include Cathay Pacific with 12%, Qantas Airways with 11%, and Etihad Airways with 10%.
Best airlines flying from Sydney to London Heathrow Airport
Compare and see reviews for airlines that fly from Sydney to London Heathrow Airport with momondo
| Airline | Rating | Free cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $1,211 | Free cancellation | Rating 7.2 92 reviews | |||
| PriceFrom $1,409 | Free cancellation | Rating 6.8 74 reviews | |||
| PriceFrom $1,459 | Free cancellation | Rating 7.3 3,848 reviews | |||
| PriceFrom $1,460 | Free cancellation | Rating 8.3 738 reviews | |||
| PriceFrom $1,472 | Free cancellation | Rating 7.4 3,584 reviews | |||
| PriceFrom $1,472 | Free cancellation | Rating 7.5 193 reviews | |||
| PriceFrom $1,480 | Free cancellation | Rating 8.3 1,489 reviews | |||
| PriceFrom $1,557 | Free cancellation | Rating 8.2 443 reviews | |||
| PriceFrom $1,602 | Free cancellation | Rating 7.6 802 reviews | |||
| PriceFrom $1,645 | Free cancellation | Rating 7.5 407 reviews |
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Why should I use momondo to find a flight deal from Sydney to London?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Sydney to London for you.
Can I find flights from Sydney to London with flexible booking policies on momondo?
Yes. All flights to London from Sydney on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Sydney to London?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Sydney to London.
I’m not ready to book a flight from Sydney to London right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to London from Sydney. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.