The Federal Aviation Administration said American Airlines had canceled a requested ground stop for all its flights on Christmas Eve morning.
In a statement, American Airlines said a "vendor technology issue briefly affected flights this morning...We sincerely apologize to our customers for the inconvenience this morning."
American Airlines said the technology issue hit systems needed to release flights. The FAA said the ground stop American Airlines requested lasted about an hour.
Customers can find the latest information on their flights on aa.com and in American's mobile app, the airline said.

Puerto Rican kikiriki chickens winning hearts across Florida
Puerto Rican kikiriki chickens are becoming one of Florida's fastest-growing pet trends. A Tampa Bay breeder tells Tampa Bay 28 reporter Michael Paluska the demand for the miniature birds has exploded.