SINGAPORE Asia's two air travel gateway cities, Singapore and Hong Kong, proved their aviation-hub mettle by dominating the top of the rankings of the busiest international routes last year, according to statistics from the International Air Transport Association.
IATA's annual World Air Transport Statistics show that all of the top five international routes by passenger numbers were in Asia, and connected either Singapore or Hong Kong, as they cater to transit demand from a growing number of Asian travelers.
