Pakistan International Airline (PIA) has rescheduled all their flights until Friday due to dense fog across Punjab, said a PIA spokesperson.
The passengers were requested to confirm their flight details from the Inquiry office.
Earlier, Allama Iqbal International Airport remained closed for all domestic and international flights due to dense fog on since last 48 hours.
Meanwhile, four people have been killed during a road accident due to fog in Bhakkar city of Punjab.