Delhi's Indira Gandhi International Airport finally climbed the ladder to being World's Number 1 in 2017. Having handled a total of 63.5 million passengers in 2017, the IGIA was termed as the busiest airport in Asia overtaking South Korea, Singapore and Thailand. Following which, Airport Service Quality (ASQ) 2017 ranked Delhi's Indira Gandhi International Airport as the World's Number 1. The Airport Service Quality is for now the only worldwide programme which measures passengers' views on a 34 key performance indicator including airport access, check-in, security screening, restrooms, stores and restaurants.

According to the Airports council International (ACI), Airports Authority of India and International Air Transport Association, IGIA is the first to have marked its space in the top 20 club of busiest airport of the World. Moreover, since the past few years, the IGIA has escalated as a new aviation hub in the Southeast Asia therefore enabling an addition of 32 million passengers, 15 international carriers, 4 domestic carriers and 27 international destinations. It is in this light that the CEO of the Delhi International Airport Limited, I Prabhakara Rao highlighted the fact of maintaining the top position and equally managing the increasing crowd as being a challenge.

This recognition seems to be for now a boost up in the construction of the 4th runway therefore helping to reduce air congestion and providing facility of handling more flights.Henceforth, equally making Delhi's Indira Gandhi International Airport as being the first to expand to four runways. The construction is likely commence this year and to be commissioned in 2019, increasing the per hour capacity of Delhi airport from 75 flights to 96.