Cheap Flights from Perth to London Heathrow

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Find the cheapest month or even day of the year to fly to London Heathrow

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Flight deals from Perth to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Perth Airport to London Heathrow Airport? If you want to travel next month, return fares start from $2,250. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Perth to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Perth to London Heathrow flights are currently cheapest in September.

Direct flights from Perth to London Heathrow

Perth to London: Flight information

The things to know before you go.
Cheapest flight found$1,802
Cheapest month to flySeptember
Average flight time17 hrs, 44 mins
Most popular airlineQantas
Average flights per week8

Finding cheap flights from Perth to London Heathrow: Frequently asked questions

The best price we found for a return flight from Perth to London Heathrow is $1,802. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
17 hours and 44 minutes is the average flight time from Perth to London Heathrow.
Qantas flies direct from Perth to London Heathrow.
As of June 2026, there are 8 flights per week flying from Perth to London Heathrow.
The cheapest month to fly from Perth to London Heathrow is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Perth Airport to London Heathrow Airport on Wednesday, 16 September 2026.
Yes – the average flight time is 17 hours and 44 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, AirAsia and Qantas offer the cheapest flight tickets to London Heathrow.

Travelling from Perth Airport (PER) to London Heathrow Airport (LHR): what you need to know

  • The average time for a direct flight from Perth Airport to London Heathrow Airport is 17 hours 40 minutes.

  • London's timezone is UTC+0, which makes London eight hours behind Perth.

  • Flights from PER to LHR start at 18:15 — the earliest with Qantas. The last service of the day is at 19:35 with Qantas. Overall, you can choose from seven weekly Perth Airport to London Heathrow Airport flights.

  • Arrive at the airport on time so you don't miss your PER to LHR flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.

  • Be prepared for longer lines during popular months such as July. Arriving up to four hours ahead of international flights and two hours for domestic departures is a smart move.

  • Qantas offers direct flights from Perth Airport to London Heathrow Airport. Book with this popular carrier, then get ready to discover the sights in London — and maybe even more of the United Kingdom if you have time.

  • The majority of passengers choose to fly with Qantas on this route.

  • With an impressive 91.67% of services arriving as scheduled, Qantas is the most punctual carrier operating PER to LHR flights.

  • If you want to split up your journey, simply deselect 'Direct flights only' when searching for your ticket from Perth Airport to London Heathrow Airport. These are the most popular stopovers between PER and LHR:

    • Dubai Airport

    • Paris Charles de Gaulle Airport

    • Kuala Lumpur International Airport

Handy information about Perth Airport (PER)

  • 74% of flights taking off from Perth Airport reach their destination on time.

  • Perth Airport is about 11 kilometres from central Perth. If you're ride-sharing, catching a taxi or driving from the centre, it'll take 20 minutes or so to arrive, depending on the traffic.

  • Planning to take public transport? Expect a journey time of around 25 minutes.

  • Booked an early flight from Perth Airport to London Heathrow Airport? Avoid the stress of rushing to the airport (and get some extra shut-eye) by picking one of these stays near PER:

Arriving at London Heathrow Airport (LHR)

When to fly to London Heathrow Airport (LHR)

  • July is the most popular month for flights from Perth Airport to London Heathrow Airport. To avoid the crowds, visit London in March.

  • When reserving your flight from Perth Airport to London Heathrow Airport, think about the kind of weather you like. July is the warmest month in London, with the temperature ranging from 11ºC to 26ºC.

  • January sees average temperatures of between 0ºC and 9ºC. Look for cheap tickets from PER to LHR around that time if you like cooler conditions.

Explore more of the United Kingdom

  • London has plenty going for it, but there are so many other parts of the United Kingdom you'll want to see. Around 257 kilometres north-west of London, a trip to Manchester will keep your itinerary busy. Don't miss top attractions like Manchester United Museum & Stadium Tour, The Homes of Football and Museum of Science and Industry.

  • If you're eager to discover another major destination in the United Kingdom, consider Birmingham, roughly 161 kilometres north-west of London. Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience are key reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.