India, Dec. 29 -- Nealy 200 flights were delayed, while some were cancelled at Delhi's Indira Gandhi International airport on Monday morning amid zero-visibility fog, which also prompted an advisory that low-visibility procedures are in place for operations.

At least 144 departures and 51 arrivals were delayed at the IGI Airport, according to FlightRadar24 data viewed at around 8:45 am on Monday. Six flights were cancelled.

Flight operations were being conducted under CAT III procedures, which allow aircraft to land safely in extremely low visibility. Several airlines also issued advisories to check flight status before heading to the airport.

"Flight operations are currently being conducted under CAT III conditions due to dense fog, w...