Which Terminal Stands Alone at Chicago O'Hare?

Terminal 5 at O'Hare International Airport (ORD) is the standalone international terminal. It's physically separate from Terminals 1–3 (connected via Airport Transit System). Opened in 1993 (rebuilt 2018), it handles all non-precleared international arrivals and many departures. Terminals 1, 2, 3 are interconnected for domestic and precleared flights.