Aviation has been an integral component in the establishment of theASEAN Economic Community (AEC). Since ASEAN designated air transport as one of the twelve priority sectors for economic integration in November 2004, significant integration and liberalization have taken
place in the past 15 years. The number of passengers carried in ASEAN countries has tripled, from 98 million in 2004 to 329 million in 2016. (The World Bank, 2018) Chart 1 shows the total (international and domestic) scheduled traffic carried by the air carriers registered in each ASEAN country. (The World Bank, 2018)
In particular, intra-ASEAN traffic has increased significantly. With the substantial growth, some ASEAN city pairs are now ranked as the busiest international routes worldwide.