Terminals of O’Hare International Airport

Terminal 1

Terminal 1 is a domestic terminal and has concourses B and C. All domestic and international flights Bu United are operated at this terminal. The terminal consists of 55 gates divided into two concourses. Concourses B and C are parallel to each other whereas C is the satellite terminal with gates on all sides. An underground pedestrian tunnel connects two concourses at the terminal.

Concourse B at the terminal one has two levels: the upper level with the direct connection to the roadway and departures and with the Airport Transit system (ATS). The lower level is home to Ground Transportation. The Concourse B has following gates: B1-B12, B14, B16, B16A, B17, B17A, B18-B24.

Concourse C at Terminal 1 features gates: C1-C10, C10A, C11, C15, C16, C16A, C17, C18, C18A, C19-C31.

Terminal 2

Terminal 2 is also a domestic terminal consisting of Concourses E and F.

Terminal 2 has three levels: Mezzanine level (USO), Upper and Lower levels. The upper-level links with Terminal 1, Terminal 3 and Rotunda and has a direct connection to the Airport Transit System (ATS). There are departures and concourses. The lower level at the terminal is home to the baggage claim area and Ground transportation. There is the main Parking Garage lot A.

Concourse E at the terminal has gates E1-E17 and hosts the Delta Sky Club.

Concourse F features gates F1-F12, F14-F17, F19-F23, F24, F25 and hosts the United Club. 

Terminal 3

Terminal 3 is a domestic terminal with concourses G, H, K, and L.

The terminal consists of three levels. Departures, Main Hall, Airport Transit System, and Roadway are on the Upper Level. Arrivals, Baggage Claim, counters, and the Ground Transportation are all located on the lower level of the terminal. Moreover, there is a Pedestrian Level Tunnel that connects Terminal 3 with Terminal 2 and Terminal 1.

Concourse G consists of gates G1A, G1B, G2A, G2B, G3-G5, G6A, G6B, G7-G14, G14A, G15.

Concourse H features gates H1 to H18.

Concourse K has gates K1-K5, K6A, K6B, K7-K17.

Concourse L has gates L1, L2A, L2B, L3-L5, L6A, L6B, L7-L9, L10A, L10B, L10C, L11, L11a, and L11b.

Terminal 5

Terminal 5 is the only international terminal at the airport. After the completion of renovations in 2014, the terminal became the largest international terminal in the US.

The terminal consists of the baggage level that hosts Arrivals and Baggage Claim 3A to 3, and the ATS station and the Ticketing Level which is the departures level featuring ticket counters 5B to 5F. Terminal 5 has one concourse – the Concourse M and 21 gates.