Cheap flights from London to Sydney from $648
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Sydney departing on 10/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from London to Sydney
Cheap return flights
Cheap one-way flights
Cheap last-minute flights
Cheap direct flights
China Southern flights from London to Sydney
Our best China Southern deals on London to Sydney flight tickets
Air China flights from London to Sydney
Our best Air China deals on London to Sydney flight tickets
See travel insights to Sydney from
How to get the cheapest flight ticket from London to Sydney
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 London and Sydney?
What is the cheapest month to fly to Sydney?
The month of May is, on average, the cheapest month to fly to Sydney from London, with most prices found around $1,638. If you aren’t able to travel to Sydney during the month of May, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,685.
What is the cheapest day to depart on your flight to Sydney?
Our data shows that Tuesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $2,148. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $5,758.
What is the cheapest time of day to depart on your flight to Sydney?
According to our data, the cheapest time of day to fly to Sydney is in the afternoon. momondo users have found flights departing from London to Sydney in the afternoon for as low as $1,928. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $2,503 on average. Flights to Sydney from London in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.
What is the cheapest London to Sydney Kingsford Smith flight route?
Fly from London Heathrow to Sydney Kingsford Smith for the best London - Sydney Kingsford Smith flight prices
How far in advance should I book a flight to Sydney?
You are more likely to see cheaper flights to Sydney from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $2,032 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from London for as low as $1,665 on momondo.
What cabin class options are available on London to Sydney Kingsford Smith flights?
There are 3 cabin classes available to choose from on London to Sydney Kingsford Smith flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from London to Sydney Kingsford Smith?
Air China and China Southern are the most popular carriers operating from London to Sydney Kingsford Smith
Which airlines fly to Sydney?
China Eastern, Etihad Airways and China Southern are the top three most popular airlines that fly to Sydney from London according to our data. China Eastern is the first choice among our users, with 27% of people opting to fly with this airline when travelling to Sydney. Keep in mind that there are 14 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.
How many flights depart from London to Sydney on average per day?
As of June 2025, 3 flights take off from London and land in Sydney each day. The most common flight departure time for this route is 21:00, with 100% of daily flights taking off in the evening.
How many flights depart from London to Sydney on average per week?
As of June 2025, 21 flights take off from London and land in Sydney each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.
When to book flights from London to Sydney
Cheap London to Sydney (LON to SYD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to Sydney
How far is London to Sydney Kingsford Smith by plane?
A flight from London to Sydney Kingsford Smith will travel around 16983.0 km. A reasonable flight in good conditions will take 21h 25m.
When did momondo last update prices for flights from London to Sydney Kingsford Smith Airport?
Prices for flights from London to Sydney Kingsford Smith Airport refresh daily.
How many operators does momondo search for flights from London to Sydney Kingsford Smith Airport?
The number of operators available for flights from London to Sydney Kingsford Smith Airport is 14 as of June 2025.
How old do you have to be to fly from London to Sydney Kingsford Smith 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 London to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Sydney?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London to Sydney is Airbus A380-800 (48.33% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (37.02%) and Boeing 777-300ER (14.65%).
What is the most popular airline from London to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from London to Sydney is China Eastern (20% of total bookings). The next most popular airlines are China Southern (13%), Singapore Airlines (10%), and Etihad Airways (10%).
Best airlines flying from London to Sydney
Compare and see reviews for airlines that fly from London to Sydney with momondo
| Airline | Rating | Free cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $621 | Free cancellation | Rating 7.2 92 reviews | |||
| PriceFrom $1,092 | Free cancellation | Rating 7.1 152 reviews | |||
| PriceFrom $1,106 | Free cancellation | Rating 7.5 99 reviews | |||
| PriceFrom $1,530 | Free cancellation | Rating 5.5 2,921 reviews | |||
| PriceFrom $1,539 | Free cancellation | Rating 7.4 263 reviews | |||
| PriceFrom $1,567 | Free cancellation | Rating 8.3 745 reviews | |||
| PriceFrom $1,569 | Free cancellation | Rating 7.4 1,220 reviews | |||
| PriceFrom $1,666 | Free cancellation | Rating 7.6 919 reviews | |||
| PriceFrom $1,679 | Free cancellation | Rating 6.6 7,075 reviews | |||
| PriceFrom $1,734 | Free cancellation | Rating 8.1 3,278 reviews |
Qantas Airways Flights From London to Sydney
The lowest priced Qantas Airways flight from London to Sydney from the last 72 hours was $1,336. Generally, Qantas Airways has 7 flights on this route every week with an average price of $1,821. Qantas Airways is rated 7.5/10 by our users.
Travelling to a place near Sydney?
Book flights to Sydney if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from London to Sydney?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Sydney . Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from London to Sydney with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for London to Sydney flights to just show those with flexible booking policies.
How can momondo help me find flights from London to Sydney?
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 London to Sydney.
I’m not ready to book a flight from London to Sydney right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of London to Sydney flights. All you need is a valid email address and we will do the rest; it is that quick and easy.