About 20 flights were delayed and two others cancelled due to thick fog at Indira Gandhi International (IGI) airport here this morning.

Dense fog enveloped the airport around 11.30 am, with runway visibility dropping to 600 metres, which forced the airport authorities to implement the low visibility procedures.

Around 10 outbound Kingfisher flights from Delhi were delayed by up to two hours while three inbound flights were also delayed due to the fog, a Kingfisher spokesperson said.

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