The Federal Aviation Administration issued a groundstop at DIA just after 7 a.m. due to the fog and “low ceilings.” Departing aircraft remained at the airport while they were being sprayed ...
A groundstop was issued until 9 a.m., the FAA's website ... according to FlightAware. DIA says it handles anywhere from 1,700 to 2,000 flights on any given day.