Cheap flights from London Heathrow Airport to Australia from £402

The month of May is, on average, the cheapest month to fly to Australia from London Heathrow Airport, with most prices found around £834. The month of September is another great option to travel to Australia, with average flight prices from London Heathrow Airport averaging around £873.

The cheapest day to depart on your flight to Australia is on a Monday when prices can be found for as low as £1,167. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Australia is Friday, with ticket prices averaging around £1,313.

Fly from London Heathrow to Perth for the best London Heathrow - Australia flight prices

You are more likely to see cheaper flights to Australia from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around £1,011 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from London Heathrow Airport for as low as £946 on momondo.

There are 4 cabin classes available to choose from on London Heathrow to Australia 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 3% on your flight if you consider stops on a London Heathrow Airport to Australia flight.

Hainan Airlines, Etihad Airways, and China Eastern are the most popular carriers operating from London Heathrow to Australia

Singapore Airlines, Cathay Pacific and Qantas Airways are the top three most popular airlines that fly to Australia from London Heathrow Airport according to our data. Singapore Airlines is the first choice among our users, with 29% of people opting to fly with this airline when travelling to Australia. Keep in mind that there are 33 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

Historically, on average around 22% of flights between London and Australia have experienced a delay on any given week. The average delay length over the past 12 months has been 127 minutes.

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

Thursday is statistically the day of the week that experiences the fewest delays on this flight route. Tuesday 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 22% of their flights experiencing any sort of delay.

4 flights are operational daily from London Heathrow Airport to Australia as of April 2026. The most popular departure time for this route is 22:00, with 74% of flights per day taking off in the evening.

28 flights are operational weekly from London Heathrow Airport to Australia as of April 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.