New Delhi, Jan. 4 -- Flight operations at Delhi airport were disrupted Saturday, with 34 arrivals and 38 departures cancelled and over 500 flights delayed. According to airport officials, the disruptions were largely due to fog-related impact at other airports, particularly across northern India, where visibility was severely affected. Data from the flight tracking website FlightRadar24 showed that over 500 flights were delayed during the day. "Most of the cancelled flights are planned cancellations, based on weather forecasts by the IMD. While considering a flight, the weather of both the source city and destination are checked," an airport official said. Airlines issued advisories due to poor visibility. Air India posted on X late Friday night, warning passengers of possible disruptions. "Poor visibility due to fog, forecast in parts of northern and southern India, including Delhi and Hyderabad, may impact flight operations across the network. If you are flying with us tomorrow, we recommend that you check your flight status before heading to the airport and allow extra time for your commute to the airport," the airline said....