A meeting was held at the Calcutta airport on Saturday to assess the preparedness for the "fog season".
Flight disruptions due to fog usually peak between late December and late January.
"The comprehensive review meeting on fog preparedness was held in the form of a coordinated dry run involving all concerned stakeholders," said an airport spokesperson.
"Roles and responsibilities of all participating agencies were clearly identified and reiterated at the meeting," he said.
Representatives from the Met office and the state police were part of the meeting.
Emphasis was laid on planning and close coordination among airlines, the India Meteorological Department (IMD), Air Traffic Control, ground handling agencies, and other internal stakeholders.
The meeting stressed "timely dissemination of accurate weather information" to minimise operational disruptions. Special focus was placed on "ensuring proactive and transparent communication with passengers", enabling them to receive updates well in advance.
The Calcutta airport has the Category III instrument landing system that allows flights to operate even when the visibility is as low as 50m.
Visibility under 50m qualifies as very dense fog in Met parlance.