What Happened To American Airlines’ Hub In St. Louis?

American Airlines is one of the largest airlines in the world, and the very largest in terms of passengers carried and daily flights. Because of this, it is no wonder that American Airlines operates from several different hub airports, including Charlotte (CLT) in North Carolina, Chicago O’Hare International Airport (ORD) in Chicago, Illinois, and its headquarters atDallas/Fort Worth International Airport (DFW) in Texas.