New Delhi, Dec 18 (ANI): Dense fog continued to envelop New Delhi for the third day on Wednesday as flight operations came to a standstill due to poor visibility. The fog affected schedule of over 60 flights causing inconvenience to passengers. According to reports, while 42 domestic and 13 international flights have been delayed so far, eight had to be cancelled. Meanwhile, dozens of trains were also delayed due to the dense fog, while many were rescheduled. Poor visibility caused traffic jams on roads increasing trouble for office goers.