The nation’s most consistently late flight goes from Atlanta to Chattanooga. The U.S. Department of Transportation says in June the 7:38 PM Atlantic Southeast Airlines flight 4104 was, on average, two-and-a-half-hours late. More than one-third of Atlanta-based ASA's flights arrived late last year, according to the DOT. An ASA spokeswoman said June brought many changes for the airline that led to delay problems, including adding 120 new flights to its schedule and changes in operations at its Atlanta hub.
