Cheap flights from London to Sydney from $602

In general, May is the cheapest month to fly from London to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,185. If you are unable to visit Sydney during the month of May, then departing from London during the month June is also very affordable. Most momondo users find prices during this month for around $1,237.

Fly from London Heathrow to Sydney Kingsford Smith for the best London - Sydney Kingsford Smith flight prices

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 $1,456 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from London for as low as $1,352 on momondo.

There is only 1 cabin class available to choose from on London to Sydney flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 7% on your flight if you consider stops on a London to Sydney flight.

As of November 2026, prices for London to Sydney flights are approximately 24% cheaper when compared to flights at the same time last year.

Qatar Airways, SWISS, and British Airways are the most popular carriers operating from London to Sydney Kingsford Smith

Etihad Airways, Air China and China Southern are the top three most popular airlines that fly to Sydney from London according to our data. Etihad Airways is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 4 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Singapore (SIN) was the most common stop: 21% of momondo users choosing 1-stop flights on this route connected there.

Flights via New Delhi (DEL) offer the lowest average round-trip price of $852.

Flights connecting via Singapore (SIN) have the shortest average one-way travel time: 21h 45m.

Singapore (SIN) has the shortest average layover time for this route: 0h 53m.

The number of flights available between London and Sydney is 3 per day as of November 2026. The most frequent departure time is 9:00PM, with 100% of daily flights leaving in the evening.

As of November 2026, 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.