To avoid Russian airspace, Cathay Pacific Airways made a reroute for their JFK-HKG flight. The new route goes across the Atlantic, through UK and southern Europe to central Asia, before entering China. Cathay is now seeking overflight permits to operate the service. The route length reaches 16,618km, surpassing Singapore Airlines’ Singapore-New York service to become the longest commercial passenger flight by distance.
A spokeswoman claimed that their A350-1000s are capable of doing this route, and due to seasonal wind this new routing features strong tailwinds which makes it more favorable than the transpacific route.
I believe this is inaccurate.
Flight aware’s flight plan for the latest SQ23 flight gives a distance of 9196.8 nautical miles on skyvector, which is over 17000km. SQ23 is avoiding Russia airspace as well.
Hong Kong is in fact closer to the tip of Russia than Singapore.