How much you'll pay for a non-stop flight from Perth to London

It's going to cost travellers $2270 for an economy ticket on the newly-released Perth to London non-stop flight.

The first flight in the highly-anticipated 236-seat Boeing 787-9 will take off from Perth at 6.50pm on March 24 next year arriving at London’s Heathrow Airport at 5.10am the following day.

Non-stop flights to London will take 18 hours and 20 minutes while when returning home, the flight is significantly less in time at 15 hours and 45 minutes.

Customers can expect to pay $4250 for the new premium economy class and $9725 for business class.

This isn't the only non-stop long haul flight in the company's plans with direct flights from Perth to Berlin, Rome and Paris next on the airline’s radar.

While return economy class fares to London will start from $2270 - described by travel agents as “very competitive” - it is expected that price will fall below $1200 during sale periods.

Qantas chief executive Alan Joyce said on Wednesday the service would bring a level of convenience Australians had never had before.

If you were to book before the release of the new flight for the same day next year, the cheapest flight from Perth to London would cost you $2367 which includes one stop over in Dubai en route to London and two stops on the way home - one in Dubai and one in Singapore.

Aviation Editor for The West Australian, Geoffrey Thomas, told Sunrise this morning the demand for these non-flights is quite high.

"Certainly in today's aircraft it [the long flight] might be hell but this is a totally different airplane," he said.

"It will be much quieter, with lower cabin altitude and higher humidity so you don't dry out - it virtually eliminates the worst effects of jet lag."

Mr Thomas said there's definitely increased traffic when it comes to non-stop flights, making this a great move for Qantas.

"People want to go non-stop over and over again cross the globe," he said.

"You find when there's a non-stop flight, it increases the traffic on the route by a factor of three.

"17 hours is no big issue today."

Mr Thomas added that customers could expect to see a price drop once the route becomes available in the market place, the market will determine exactly what the prices are going to be.

Sydney is expected to join in on the long-haul route from 2021 with non-stop flights to London as well as New York.

Qantas' non-stop flights from Perth to London officially go on sale at 11.30am on Thursday, allowing passengers to purchase tickets for the world's first commercial non-stop services from Australia to the UK.

Despite the crazy distance, the 14,498km long-haul from Perth to London will not be the world's longest flight.

That title belongs to Qatar Airways, who claimed it in February this year with its 14,535-km Doha to Auckland non-stop flights.