<br/>Air operations at the Indira Gandhi International airport is now normal. But due to dense fog in the morning air traffic was badly affected, disrupting the schedules of over 50 domestic and international flights.<br/><br/>Fog started enveloping the airport from 10 pm last night and runway visibility dropped to 50 metres due to which 21 domestic and international flights were diverted while 15 others were cancelled.<br/><br/>Speaking to AIR, Airport Met department director in charge Mr R K Jenamani said flights were delayed as thick fog covered the airport.<br/><br/>AIR correspondent reports some other flights to Chandigarh, Jaipur and Shimla were also cancelled.<br/><br/>Around 10 international flights arriving Delhi were also delayed. Similarly, those departing also got delayed.<br/><br/>On Wednesday, over 200 flights were affected after thick fog enveloped the airport and reduced the visibility to 50 metres.<br/>