Due to dense fog, several flights have been delayed at the Kolkata airport, with over 100 flights impacted. IndiGo has suspended all departures and arrivals at the airport until further notice. Poor visibility caused by the fog is the main reason for the delays. The airline has issued a travel advisory asking passengers to check the status of their flights before heading to the airport. Several other airlines are also experiencing delays, with around 60 flights delayed as of now. Passengers are advised to check with their airlines for the latest information on their flight status. The airport authorities are working to clear the fog and resume normal operations as soon as possible. In the meantime, travelers are facing disruptions and inconvenience. The foggy conditions are affecting not only domestic flights but also international flights to and from the airport. The situation is being closely monitored by the airport authorities and airlines, and updates are being provided regularly.