New Delhi, Dec. 21 -- The Airports Authority of India (AAI) issued an advisory on Sunday, warning that fog conditions in parts of northern India are affecting visibility and may lead to delays or changes in flight operations at select airports.

Passengers have been advised to check flight updates with their respective airlines through official channels and to allow extra time for travel to airports and completion of necessary formalities.

"Fog conditions in parts of Northern India are affecting visibility and may lead to delays or changes in flight operations at select airports. Passengers are advised to check flight updates with their airlines through official channels and allow extra time for airport travel and formalities," AAI's adv...