Southwest Airlines Co. canceled more than a quarter of its scheduled flights Sunday, citing issues with air traffic control and disruptive weather as it works to resume normal operations.
Some 1,018 flights -- 28% of Southwest’s total for the day -- were canceled by the Dallas-based carrier as of 4:15 p.m. New York time, according to the airline tracking site FlightAware.com. More than 500 other Southwest flights were delayed.
