A Delta Air Lines jet takes off from Ronald Reagan Washington National Airport in Arlington, Va. The airline canceled only 6 flights in September as 90.5 percent of its flights arrived on time. (AP Photo/Manuel Balce Ceneta, File)
A Delta Air Lines jet takes off from Ronald Reagan Washington National Airport in Arlington, Va. The airline canceled only 6 flights in September as 90.5 percent of its flights arrived on time. (AP Photo/Manuel Balce Ceneta, File) Manuel Balce Ceneta AP
A Delta Air Lines jet takes off from Ronald Reagan Washington National Airport in Arlington, Va. The airline canceled only 6 flights in September as 90.5 percent of its flights arrived on time. (AP Photo/Manuel Balce Ceneta, File) Manuel Balce Ceneta AP