Existing flight routes between Asia and North America often fly over the arctic already: https://www.flightradar24.com/blog/winter-winds-how-singapore-airlines

Existing flight routes between Asia and North America often fly over the arctic already: https://www.flightradar24.com/blog/winter-winds-how-singapore-airlines-new-worlds-longest-flight-is-saving-time-and-fuel-by-flying-farther/ https://www.flightradar24.com/blog/winter-winds-how-singapor...