Sun Country Airlines operates from Terminal 5 at O'Hare International Airport (ORD). This terminal is known for handling most of the airport's international flights, but it also serves select domestic carriers, including Sun Country. When I flew with Sun Country recently, navigating Terminal 5 was simple, thanks to clear signage and modern facilities. The check-in process was quick, and there were plenty of dining and shopping options to enjoy while waiting for my flight. If you're wondering what terminal is Sun Country at O'Hare (https://jumbojourney.com/sun-country-airlines/ord-terminal-ohare-international-airport/), you'll find all their flights departing from Terminal 5.