Flights on Spirit Airlines continued to be canceled and delayed Tuesday Arnold Palmer Regional and Pittsburgh International airports. The "proactive cancellations" are a result of "overlapping operational challenges including weather, system outages and staffing shortages," Spirit spokesman Field Sutton said. It was unclear when the issues might be resolved. Sutton said the cancellations are mainly focused in areas where travelers would have other flight options. Spirit… (www.yahoo.com) 更多...