According to OAG report, 15 of the top 20 busiest international routes are all in Asia Pacific, and on average, seven carriers operate on these routes. Compared to the rest of the world, Asia appears to be leading the pack.

With 30,187 flights in the course of a year, the route between Kuala Lumpur International Airport (KUL) and Changi Airport, Singapore (SIN), has the highest frequency of services. Looking to the West, 8 of the top 10 busiest long-haul routes originate from North America.

With 15,587 flights over 12 months, the service between New York (JFK) and San Francisco (SFO) topped the long-haul route list, followed closely by New York (JFK) to London Heathrow (LHR) with 14,195 operating flights.

Three of the busiest medium-haul routes are domestic routes in China, starting or ending in Beijing. The busiest short-haul route is between Jeju International Airport (CJU) and Gimpo International Airport (GMP), which is also the busiest domestic route in the world, with almost an incredible 80,000 annual flights.

Source: OAG Aviation Worldwide Limited.