Cheap flights from London to Perth from $786

The month of September is, on average, the cheapest month to fly to Perth from London, with most prices found around $1,874. If you’re not able to fly to Perth in September, then May is your next best option. Flight prices from London to Perth during May average around $1,902.

The cheapest day to depart from London to Perth is on a Sunday. Travellers who choose to depart for Perth on a Sunday will often find tickets for as low as $2,618. The most expensive day to fly to Perth is Friday, with ticket prices averaging around $3,437.

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

You are more likely to see cheaper flights to Perth from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Perth for around $2,194 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Perth from London for as low as $1,936 on momondo.

There are 3 cabin classes available to choose from on London to Perth 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 14% on your flight if you consider stops on a London to Perth flight.

British Airways, Qatar Airways, and Oman Air are the most popular carriers operating from London to Perth

Qantas Airways, Singapore Airlines and Malaysia Airlines are the top three most popular airlines that fly to Perth from London according to our data. Qantas Airways is the first choice among our users, with 32% of people opting to fly with this airline when travelling to Perth. Keep in mind that there are 8 different airlines that fly to Perth on a routine basis, so you have a few additional options to choose from.

Historically, on average around 21% of flights between London and Perth have experienced a delay on any given week. The average delay length over the past 12 months has been 133 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.

Friday 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 21% of their flights experiencing any sort of delay.

Kuala Lumpur (KUL) was the most common stop: 33% of momondo users choosing one-stop flights on this route connected there.

Flights via Kuala Lumpur (KUL) offer the lowest average return price of $1,897.

Flights connecting via Bangkok (BKK) have the shortest average one-way travel time: 19h 35m.

Singapore (SIN) has the shortest average stopover time for this route: 1h 34m.

As of March 2026, 1 flights take off from London and land in Perth each day. The most common flight departure time for this route is 11:00, with 100% of daily flights taking off at midday.

7 flights are operational weekly from London to Perth as of March 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.