Southwest Airlines said Monday morning its operations had returned to normal after what it called a "system-wide" technology problem delayed hundreds of flights Oct. 11.
Monday's "all-clear" statement from Southwest came hours after airline officials warned early morning travelers to expect more of the same trouble, urging them to head to the airport at least two hours hours early and asking them to print boarding passes before leaving home.
The holiday weekend travel nightmare—which one passenger tweeted was "pure hell"—erupted a social media firestorm. Southwest reported delays of at least 450 flights Sunday, causing massive lines at some of the nation's busiest airports.
By 7 a.m., Mountain Time, Monday, Southwest officials sent out an update saying they expected to be "performing normally" but would need some additional time to get bags delivered and some delayed customers into open seats.