Cheap flights from Australia to London from $706

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Australia, with most prices found around $1,559. If you aren’t able to travel during the month of October, then book flights to London Heathrow Airport from Australia during February instead. Flights to London Heathrow Airport in February, while not as cheap as those in October, still average around $1,578.

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $2,094. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Australia to London Heathrow Airport for around $2,568.

In the afternoon is the cheapest time of day to fly from Australia to London Heathrow Airport when you can find flight prices for as low as $2,103. Flying to London Heathrow Airport in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to London Heathrow Airport is at midday when prices are around $2,315.

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

You are more likely to see cheaper flights to London Heathrow Airport from Australia when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $1,900 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Australia for as low as $1,742 on momondo.

There are 4 cabin classes available to choose from on Australia to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

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

Historically, on average around 12% 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 222 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 12% of their flights experiencing any sort of delay.

4 flights are operational weekly from Australia to London Heathrow Airport as of March 2026. The most popular departure day for this route is Sat, with 100% of flights per week taking off on this day.

The flight from Australia to London Heathrow Airport depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Perth (a popular airport in Australia) to London Heathrow Airport (the most popular airport in London Heathrow Airport), then the flight time is 17h 30m on average. If you fly from Melbourne (another popular airport in Australia) to London Heathrow Airport, then the average flight time is 22h 40m.