The airline is planning to reroute its New York to Hong Kong service over the Atlantic Ocean instead of the Pacific to avoid flying over Russia.
In a statement to Agence France-Presse, Cathay Pacific said the flight would cover just under 16,600 kilometres.
On its website, the airline has already listed a non-stop flight from New York to Hong Kong with a flight time of 17 hours and 50 minutes, which will begin on April 3.
The current record holder is Singapore Airlines, which flies from Singapore to New York, a 15,343 kilometre journey.
While the distance will be shorter, the Singapore Airlines flight takes 18 hours.
Russia has closed its airspace to several European nations and all UK-linked airlines in the wake of the war in Ukraine.
Numerous airlines have also cancelled Russian-bound flights and changed travel paths to avoid the country’s airspace.
In a statement, Cathay Pacific said it was seeking an overflight permit to cross Europe, Central Asia and the Atlantic Ocean.
“We are always running contingency routings for potential events or scenarios within the world of aviation,” it said.