Flight operations at the IGI airport here remained normal for the fourth consecutive day on Sturday as the airport remained free from dense fog.

“Thought there was some moderate fog, the runway visibility remained above 1,200 metres and there was no disruption in flight operations,” airport sources said.

General visibility was around 700 metres and runway visibility over 1200 metres on both the runways.

Flight operations were badly affected for three days early this week after dense fog enveloped the airport hitting the schedule of over 300 flights.