World's busiest air route is in South KoreaCALIFLIER01/WIKIMEDIA COMMONS A Korean Air jet at Seoul Incheon airport. The world's busiest air route is in South Korea, from the holiday island of Jeju to the capital of Seoul. The busiest route outside of Asia is New York to Toronto, the sixth busiest with 17,116 flights a year, followed by Dublin to London, the ninth busiest route in the world (14,556 flights). World's 10 busiest air routes1. Beijing-Shanghai, China: 30,029World's busiest international air routes1.

Source: Stuff January 08, 2018 01:30 UTC