Russian airspace rerouting may create a new world's longest flight
https://edition.cnn.com/travel/article/cathay-pacific-world-longest-flight-intl-hnk/index.html
As the authority of Cathay Pacific says, it's difficult to tell the detail route of each flight.
So, definition of world's longest flight should not include rerouting flights.
Each route for nominating world's longest flight should be calculated by direct distance between departing city and arrival city.
