James3454698
34 posts
Oct 07, 2026
12:50 PM
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The Sun Country Airlines Chicago passengers departing from O'Hare International Airport should finalize check-in requirements online or via the mobile application up to twenty-four hours before departure. Early check-in enables travelers to access digital boarding passes, choose additional seating preferences, and avoid lengthy departure lines at the terminal. Those requiring manual assistance and a physical boarding pass may visit the airport service counters located in Terminal 5, which open about three hours before flight departure. Departure gates close exactly 15 minutes before departure.
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