WebO'Hare International Airport ORD Chicago, Illinois, United States Located in Terminal 5, Concourse M (Inside Security). All domestic by American and American Eagle flights are processed on this terminal. (Stacey Wescott / Chicago Tribune), Construction work continues on a new parking garage outside of Terminal 5 at O'Hare International Airport on Jan. 31, 2023. [9] With the departure of Douglas the complex took the name Orchard Field Airport, and was assigned the IATA code ORD. A light-filled, spacious new Terminal 5 has 10 new This terminal has concourses B and C and 54 gates. (Pre-war airport designs had favored ever-larger single terminals, exemplified by Berlin's Tempelhof.)