Chicago Express Airlines, Inc. was a regional airline headquartered in Chicago, Illinois, United States. It operated regional feeder services from Chicago Midway Airport under the name ATA Connection. On June 1, 1999, ATA Airlines acquired Chicago Express for $1.9 million. Chicago Express became a wholly owned subsidiary of Amtran, later known as ATA Holdings, and now known as Global Aero Logistics, Inc. The airline had a line maintenance base at Midway Airport in Chicago, Illinois, and a hangar maintenance base at Gerald R. Ford International Airport in Grand Rapids, Michigan. In 2000, The hangar maintenance base was moved to South Bend Regional Airport in South Bend, Indiana. Chicago Express provided connecting service at ATA's hub, Chicago Midway International Airport.