Southwest Airlines says it's fixed the technology problems that delayed hundreds of flights Sunday and that it expects a normal day of operations.<br />The Dallas company had been warning passengers flying Monday to arrive at the airport two hours early and print boarding passes beforehand.<br />Airline representatives have not said what was causing the problem, but a spokesman has said there was no indication that hackers were behind it.<br />There were about 450 delays out of 3,600 flights scheduled Sunday.<br />Airline representatives have not said what caused the "technology issues," which affected the airline's mobile app, website and reservation centers.<br />but an airline spokesman said there was no indication that hackers were behind it.<br />The problem forced airline workers to manually issue tickets.
