Cheap flights from Sydney to London from $391

The cheapest month to fly to London from Sydney is in February. Flight prices, which tend to average around $1,061, are often lower during this time because this is during the off-season. The month of May is another great option to travel to London, with average flight prices from Sydney averaging around $1,067.

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

You are more likely to see cheaper flights to London from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $1,306 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Sydney for as low as $1,189 on momondo.

There is only 1 cabin class available to choose from on Sydney Kingsford Smith to London 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 8% on your flight if you consider stops on a Sydney to London flight.

As of March 2026, prices for Sydney to London flights are approximately 22% cheaper when compared to flights at the same time last year.

AirAsia X, China Eastern, and Etihad Airways are the most popular carriers operating from Sydney Kingsford Smith to London

British Airways, Etihad Airways and Qantas Airways are the top three most popular airlines that fly to London from Sydney according to our data. British Airways is the first choice among our users, with 31% of people opting to fly with this airline when traveling to London. Keep in mind that there are 10 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Singapore (SIN) was the most common stop: 30% of momondo users choosing 1-stop flights on this route connected there.

Flights via Shanghai (PVG) offer the lowest average round-trip price of $912.

Flights connecting via Dubai (DXB) have the shortest average one-way travel time: 23h 46m.

Singapore (SIN) has the shortest average layover time for this route: 1h 44m.

As of March 2026, 3 flights take off from Sydney and land in London each day. The most common flight departure time for this route is 4:00PM, with 95% of daily flights taking off in the afternoon.

The number of flights available between Sydney and London is 21 per week as of March 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.