According to CNBC, citing FlightAware data, more than 1,600 flights within, into, or out of the U.S. were canceled and nearly 1,400 were delayed as of 7:00 a.m. ET on Sunday. The report noted that airlines are still adjusting passenger and crew schedules to resume operations following the lifting of the nationwide ground stop. The figures cited represent the count at that specific time and do not reflect the final totals for the entire day.