India, Sept. 5 -- Airports are not only an entry point for passengers but are also a huge commercial hub where airlines, passengers, cargo operators and businesses meet. The more passengers travel, the more aircraft fly through an airport, the more revenues it generates from aviation fees, retail, food and beverage, advertising, parking and other business.

1. Kolkata Airport The highest revenue AAI airport is the Netaji Subhas Chandra Bose International Airport with a revenue of Rs 1,578.61 crore for the FY 2023-24. During the year, it served around 2.2 crore passengers and almost 1.5 lakh aircraft movements, which equated to nearly 60,000 passengers and 410 aircraft movements per day. One of its major sources of revenue was aeronauti...