Cheap flights from London Heathrow Airport to Australia from $708

In general, May is the cheapest month to fly from London Heathrow Airport to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,512. If you don’t want to visit Australia in May, then you should wait until September to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $1,634.

On average, the least expensive day to fly to Australia from London Heathrow Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $2,111. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from London Heathrow Airport to Australia on a Thursday will generally be more expensive and average around $3,150. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Fly from London Heathrow to Sydney Kingsford Smith 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 $1,885 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 $1,668 on momondo.

There are 3 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 11% on your flight if you consider stops on a London Heathrow Airport to Australia flight.

China Southern, Hainan Airlines, and Malaysia Airlines are the most popular carriers operating from London Heathrow to Australia

China Southern, Qatar Airways and Singapore Airlines are the top three most popular airlines that fly to Australia from London Heathrow Airport according to our data. China Southern 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 18 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

Historically, on average around 24% 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 125 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 24% of their flights experiencing any sort of delay.

4 flights are operational daily from London Heathrow Airport to Australia as of February 2026. The most popular departure time for this route is 21:00, with 75% of flights per day taking off in the evening.

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