<h1>Air traffic congestion disrupts airport operations, causing widespread flight delays and runway capacity constraints, and recovery efforts continue.</h1> Air traffic congestion at Indira Gandhi International Airport disrupted flight operations after adverse weather the previous evening; flight-tracking data showed a substantial number of delayed flights with an elevated average departure delay. One runway was closed for maintenance, leaving three operational runways and constraining throughput. Airport operators and airlines coordinated on-ground recovery measures to minimise passenger inconvenience, while some flights were held for takeoff and landing clearance, producing network-wide schedule impacts.