Cheap flights from Australia to London from $603

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Australia, with most prices found around $1,586. If you aren’t able to travel during the month of February, then book flights to London Heathrow Airport from Australia during October instead. Flights to London Heathrow Airport in October, while not as cheap as those in February, still average around $1,651.

Our data shows that Monday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $2,025. 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 $2,685.

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 $2,229. 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 in the evening when prices are around $3,702.

Fly from Perth 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 $1,941 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 $1,735 on momondo.

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

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

Singapore Airlines, Etihad Airways and Qantas 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 28% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 28 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 10% 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 139 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.

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Friday 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 10% of their flights experiencing any sort of delay.

3 flights are operational daily from Australia to London Heathrow Airport as of August 2026. The most popular departure time for this route is 14:00, with 100% of flights per day taking off in the afternoon.

24 flights are operational weekly from Australia to London Heathrow Airport as of August 2026. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.