An air-travel says Singapore to Kuala Lumpur is the international route. There were over 30,500 between the two last year. That's flight every 17 . Asia has the top busiest air routes. New York to Toronto, Dubai to Kuwait were the busiest routes outside of .
The busiest route for numbers was Hong Kong to Taipei. More 6.5 million people flew this . The world's busiest air route was Seoul to Jeju. In 2017, 65,000 flights flew route. That's one flight seven-and-a-half minutes. The long- flight in the 20 was New York to London.