DFW Airport ranked No. 1 on FlightAware's MiseryMap on Wednesday afternoon with the most cancellations and delays in the U.S.
The FAA issued a ground stop for most planes flying to DFW, on top of delays caused by an American Airlines software issue.
American Airlines flights were grounded for about an hour Tuesday morning following an unspecified technology issue.
The storms that blew into North Texas on Christmas Eve challenged airline passengers coming to and leaving from DFW International Airport.