American Airlines has announced the resumption of its flights following a nationwide grounding that occurred due to a technical issue on Christmas Eve. The temporary ground stop affected operations across the U.S. during a busy travel period, leading to significant delays, particularly at the Rochester airport and DFW Airport, where weather conditions also complicated travel plans. More than 900 flights were delayed as a result of the outage, which has since been resolved. Travelers faced chaos amid the holiday rush, but flights are now operational once again.