The ranking was released by Airports Council International in their annual Airport Service Quality (ASQ) rankings.
This position was held by South Korea’s Incheon International Airport in 2016.
ASQ is a worldwide programme surveying passengers at airports. Key parameters including airport access, security screening, check-in facilities, restrooms, stores, restaurants, etc were surveyed in the programme.
The IGI Airport has the highest number of passengers commuting-more than 40 million per annum.