The Delhi airport in the advisory asked passengers to stay informed about flight updates by contacting their respective airlines. 'Passengers are requested to contact the airline concerned for updated flight information,

The India Meteorological Department (IMD) predicted dense fog conditions in Delhi, Punjab, Haryana, Chandigarh on December 26 and during December 28 to 31.

India Meteorological Department (IMD) reported a minimum temperature of 7 degrees Celsius in Delhi on Thursday, along with a forecast of dense fog.

Several parts of north India experienced cold wave conditions with Jammu and Kashmir still under the grip of Chillai-Kalan, a 40-day extreme winter that began on December 21.

In the advisory, the Delhi airport said that flights that are not compliant with CAT III may be affected. Aircraft with CAT III allow the planes to land in reduced visibility conditions