"At Dayton airport in Ohio, for instance, there were 31 commercial passenger flights scheduled to take off on April 22, but just under half of the flights actually departed. The data over the past month shows that’s not an aberration. In the past 30 days, there have been between 10 to 20 flights per day that were scheduled for takeoff and then canceled the same day at Dayton, sometimes more, according to FlightRadar24."