Traffic in India is moderately concentrated: Indira Gandhi International Airport (DEL) alone handles about 73.7 million passengers a year, roughly 45% of the 164 million across the 4 airports listed here. Several airports carry meaningful traffic rather than one gateway taking everything, which usually means strong regional demand rather than pure connecting traffic.
Between them these airports operate 10 runways serving 4 cities, all on a single national clock. Every airport below links to a live map of aircraft observed within available ADS-B coverage around the field.
The next airport in the ranking is Chhatrapati Shivaji Maharaj International Airport (BOM) at about 52.8 million passengers. The gap to DEL is 20.9 million, while the three busiest airports account for roughly 100% of traffic represented by this list. Most listed traffic is therefore concentrated at the top of the network.
The airports are spread across roughly 15 degrees of latitude and 6 degrees of longitude. That geographic spread makes weather, daylight and local operating conditions materially different across the same national network. Field elevations vary less dramatically than they do in the world's mountain-airport networks. The average across this selected set is 2.5 runways per airport.
Read airport by airport, the selected India network is not interchangeable: Indira Gandhi International Airport (DEL) has 4 runways and about 73.7 million annual passengers, Chhatrapati Shivaji Maharaj International Airport (BOM) has 2 runways and about 52.8 million annual passengers, Kempegowda International Airport (BLR) has 2 runways and about 37.5 million annual passengers and Rajiv Gandhi International Airport (HYD) has 2 runways and no comparable traffic figure. Those differences matter when comparing a live map. A larger passenger total indicates schedule scale, while runway count describes physical layout; neither number by itself proves how delayed, connected or operationally efficient an airport will be on a particular day.
With 4 gateways in this data cut, the India hierarchy is readable directly: DEL contributes 45% of the represented passenger total, BOM contributes 32% of the represented passenger total, BLR contributes 23% of the represented passenger total and HYD contributes 0% of the represented passenger total. That makes DEL the first gateway here without reducing BOM to a minor field, since its traffic is about 72% of DEL's.
The physical ranking differs from the traffic ranking: DEL has 4 listed runways, BOM has 2 listed runways, BLR has 2 listed runways and HYD has 2 listed runways. BLR is the highest of the group at 3,000 ft, against 39 ft at BOM. Those facts describe layout and setting, not a live capacity forecast; weather, active runway configuration and traffic flow still decide what a viewer sees on the map at a given hour.