Cheap flights from Australia to London from £366

The cheapest month to fly to London from Australia is in February. Flight prices, which tend to average around £801, 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 Australia averaging around £804.

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £1,054. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Australia to London for around £1,497.

The cheapest time of day to fly to London is at midday when flights can be purchased for as low as £1,112. Flights in the afternoon are often more expensive, with an average ticket price of £1,417.

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

You are more likely to see cheaper flights to London from Australia when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £986 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Australia for as low as £905 on momondo.

There are 3 cabin classes available to choose from on Australia to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Etihad Airways, AirAsia X, and Malaysia Airlines are the most popular carriers operating from Australia to London

Emirates, Singapore Airlines and Qantas Airways are the top three most popular airlines that fly to London from Australia according to our data. Emirates is the first choice among our users, with 28% of people opting to fly with this airline when travelling to London. Keep in mind that there are 16 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% of flights between Australia and London have experienced a delay on any given week. The average delay length over the past 12 months has been 216 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Sunday is statistically the day of the week that experiences the fewest delays on this flight route. Monday has historically seen more delays on average compared to the rest of the week.

According to our data, Qantas Airways have had the fewest delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

As of March 2026, 4 flights take off from Australia and land in London each week. The most common flight departure day for this route is Sat, with 100% of weekly flights taking off on this day.

Flight times from Australia to London vary, but if you’re flying out of Perth and flying into London Heathrow Airport (one of the most popular routes), then the duration is 17h 30m on average. Another popular route from Australia to London is flying from Melbourne to London Heathrow Airport, which will take roughly 22h 40m. Keep in mind that layovers or delays could extend your travel time.