Complete Guide to Chicago O'Hare Terminals: Terminal 1, 2, 3 & 5

Chicago O'Hare International Airport operates four main terminals, each serving different airlines and destinations. Terminal 1 is home to international carriers and United Airlines operations. Terminal 2 serves primarily American Airlines with excellent dining and retail options. Terminal 3 is the regional hub for connecting flights, while Terminal 5 serves as the international gateway for many international carriers.

Each terminal features modern amenities including TSA PreCheck lanes, business lounges, restaurants, and shopping areas. The Automated Train System (ATS) connects all terminals, providing quick transportation between gates and baggage claim areas.

Plan to arrive 2-3 hours before international flights and 1-2 hours before domestic flights to allow time for navigation and security screening.