Cheap flights from Perth to London from £397

In general, March is the cheapest month to fly from Perth to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £836. The month of October is another great option to travel to London Heathrow Airport, with average flight prices from Perth averaging around £889.

On average, the least expensive day to fly to London Heathrow Airport from Perth is on a Monday. momondo users have found tickets for Monday departures for as low as £1,235. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £2,132.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Perth to London Heathrow Airport in the evening for as low as £1,142. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £1,881 on average. Flights to London Heathrow Airport from Perth at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from Perth when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £1,100 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 Perth for as low as £959 on momondo.

There are 3 cabin classes available to choose from on Perth 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.

Qatar Airways and Emirates are the most popular carriers operating from Perth to London Heathrow

Qantas Airways, Qatar Airways and Singapore Airlines are the top three most popular airlines that fly to London Heathrow Airport from Perth according to our data. Qantas Airways is the first choice among our users, with 42% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 4 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 Perth and London have experienced a delay on any given week. The average delay length over the past 12 months has been 136 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.

Kuala Lumpur (KUL) was the most common stop: 25% of momondo users choosing one-stop flights on this route connected there.

Flights via Doha (DOH) offer the lowest average return price of £646.

Flights connecting via Dubai (DXB) have the shortest average one-way travel time: 21h 05m.

Doha (DOH) has the shortest average stopover time for this route: 1h 28m.

As of November 2026, there are 1 flights per day flying from Perth to London Heathrow Airport. The most common time of day flights depart is 16:00, with 100% of flights taking off in the afternoon.

The number of flights available between Perth and London Heathrow Airport is 7 per week as of November 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.