Singapore Airlines has revealed more details about the record-breaking flight ahead of its launch on October 11.

And in a bold omission, the airline said there will be no economy seats on the flight, with only premium economy and business class seats available to passengers.

Prices for tickets will be revealed when the tickets go on sale on Thursday.

The 16,700km route between Singapore’s Changi airport and Newark Liberty Airport, new New York City, will be serviced by new Airbus A350-900 ULR (“ultra long range”) aircraft.

There will be 94 seats in premium economy — a class between economy and business class — and 67 business class seats.

“The two-class configuration … was a business consideration to meet market demand,” Singapore Airlines told AFP about the lack of economy seats.

“This configuration will also provide our customers with greater comfort on non-stop flights.”

Brendan Sobie, chief analyst at the Centre for Asia Pacific Aviation, told AFP the move was about the airline “marketing themselves as a premium service provider”.

Singapore Airlines previously flew the Singapore to New York route on A340 aircraft which also didn’t have an economy class on board. That service was scrapped in 2013 as rising fuel costs made the route unprofitable.

But new, fuel-efficient ultra long range aircraft, such as the A350-900 ULR and the Boeing 787 Dreamliner, has created new possibilities for ultra-long-haul routes.

Singapore Airlines has seven ultra-long-range A350s on order, and is due to take delivery of the first in September.

The airline will operate the Singapore-New York flight three times a week.

The route will replace Qatar Airways’ Doha to Auckland route as the world’s longest commercial flight.

The Qatar Airways flight is a whopping 14,529km long.

The world’s second longest flight — until October, at least — is Qantas’ new Perth to London route, which flies 14,529km non-stop.

That route was launched in March, with news.com.au among the first to experience its on-board perks.

But not everyone was a fan of the marathon journey. Passenger Jacob Lewis, a journalist with The UK’s The Sun, found it to be a “hellish” experience, saying he was “breathing more farts than air” by the end and that passengers were warned not to resort to sleeping in the aisles.

There are other ultra-long-range flights that fly direct from Australia — United Airlines’

13,833km flight from Sydney to Houston, and Qantas’ 13,837km flight from Sydney to Dallas/Fort Worth.

WORLD’S LONGEST FLIGHTS (FOR NOW)

1. Doha-Auckland, Qatar Airways — 14,529km

2. London-Perth, Qantas — 14,496km

3. Dubai-Auckland, Emirates — 14,200km

4. Los Angeles-Singapore, United Airlines — 14,113km

5. Sydney-Houston, United Airlines — 13,833km

6. Sydney-Dallas, Qantas — 13,837km

7. San Francisco-Singapore, United Airlines/Singapore Airlines — 13,592km

8. Atlanta-Johannesburg, Delta — 13,581km

9. Abu Dhabi-Los Angeles, Etihad — 13,502km

10. Dubai-Los Angeles, Emirates — 13420km