Concept:
The Official Aviation Guide (OAG) tracks global flight schedules, passenger traffic matrices, and airport connectivity configurations. Rankings in the Asia-Pacific region reflect regional economic activity, tourism recovery, and an airport's role as a major international transit hub.
Step 1: Review the passenger handling data for Indira Gandhi International (IGI) Airport, Delhi, for the 2025 assessment cycle. IGI Airport has consistently expanded its terminal capacities (Terminals 1, 2, and 3) alongside upgrading to four operational runways.
Step 2: Identify its exact rank in the Asia-Pacific (APAC) hierarchy. The OAG data verified that Delhi Airport climbed to the 4th position among the busiest airports in the region, trailing behind mega-hubs like Tokyo Haneda, Atlanta (globally), and principal Chinese transit centers.
Step 3: Evaluate alternate choices. Ranking 10th or 15th would understate Delhi's rapid infrastructure expansion, which handles over 70 million passengers annually. Its placement at 4th reflects its status as a premier aviation gateway in South Asia.