<h1>Delhi airport flight operations disrupted: over 500 flights delayed and 14 cancelled due to dense fog and low visibility.</h1> Severe low-visibility weather at Indira Gandhi International Airport produced over 500 flight delays and 14 cancellations (six arrivals, eight departures), including international services, with an average delay of just over 30 minutes, as airport operations and scheduled capacity were reduced due to persistent dense fog.