AA 3909 then 5Y 9013 at O'Hare
Green Bay → Chicago → Seoul
Timetable, Chicago time
22:00AA 3909 from Green Bay at the gate
05:205Y 9013 to Seoul leaves the gate
7 h 20 apart on the timetable, overnight
The last days
AA 3909 and 5Y 9013 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.