Traffic routes in and between China, HK, Singapore and Japan all carry much more traffic than any London or NY based routes: https://en.wikipedia.org/wiki/List_

Traffic routes in and between China, HK, Singapore and Japan all carry much more traffic than any London or NY based routes: https://en.wikipedia.org/wiki/List_of_busiest_passenger_air_routes#The_world's_busiest_international_air_routes_by_origin-and-destination_passenger_volume_(airport_pairs) https://en.wikipedia.org/wiki/List_of_busiest_passenger_air_... In an alternate measure, we finally see a NY-based trip enter the list at number 8, with the countries listed above remaining much busier: https://en.wikipedia.org/wiki/List_of_busiest_passenger_air_routes#International https://en.wikipedia.org/wiki/List_of_busiest_passenger_air_...