Cheap flights from London to Sydney from $851

The month of May is, on average, the cheapest month to fly to Sydney from London, with most prices found around $1,683. If you aren’t able to travel to Sydney during the month of May, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $1,762.

Our data shows that Wednesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,892. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $3,454.

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 $2,073 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 $1,915 on momondo.

There are 2 cabin classes 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 1% on your flight if you consider stops on a London to Sydney flight.

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

Etihad Airways, Qantas Airways and China Eastern 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 travelling to Sydney. Keep in mind that there are 12 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Guangzhou (CAN) was the most common stop: 16% of momondo users choosing one-stop flights on this route connected there.

Flights via Beijing (PEK) offer the lowest average return price of $1,191.

Flights connecting via Dubai (DXB) have the shortest average one-way travel time: 21h 55m.

New Delhi (DEL) has the shortest average stopover time for this route: 1h 20m.

As of October 2026, 3 flights take off from London and land in Sydney each day. The most common flight departure time for this route is 20:00, with 100% of daily flights taking off in the evening.

As of October 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.