in General The world’s busiest air route is between…. by Chirag Chauhan April 15, 2018, 4:22 am 27 Views The world’s busiest air route is between Seoul and Jeju Island. air routeJeju IslandSeoul Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website By using this form you agree with the storage and handling of your data by this website. *