In November 1982 Piedmont Airlines returned to Columbia with flights to Charlotte and later Newark. American Airlines would start service in 1985 to Raleigh and United Airlines would fly to Charlotte and Chicago–O'Hare. PeopleExpress and Continental Airlines. Freedom Airlines operated Convairs to Columbia in 1983. United Express (operated by Atlantic Coast Airlines) entered the market May 24, 1999 with service to Washington–Dulles and added Chicago–O'Hare on July 1, 2000. Northwest Airlines (operated by Pinnacle Airlines) came to Columbia on October 6, 2003, offering service to Detroit. On October 30, 2005, American Eagle returned after a nine-year absence with service to Dallas/Fort Worth after Delta closed their DFW hub earlier that year. In October 2010 US Airways Express operated by Air Wisconsin began non-stops to New York–La Guardia, but wound up discontinuing it as a result of a New York–La Guardia slot swap with Delta, which now has two daily flights to the airport.