Dense fog enveloped the IGI Airport in New Delhi on Saturday morning, delaying around 25 flights.
Fog started to descend over the airport in the wee hours due to which runway visibility dipped to less than 100 metres on the main as well as on the other runways.
Since the visibility was less than the required minima of 125 metres and 15 metres, flights could not take off.
But as soon as the visibility improved around 6am, flight operations resumed, according to an airport official.
On Friday, around 400 domestic and international flights were affected as dense fog enveloped the airport, reducing the visibility to less than 50 metres for more than 7 hours.
A total of 41 flights were cancelled, 322 were delayed and 30 were diverted due to fog.