LF 8443 then UA 3902 at O'Hare
MQY → Chicago → Detroit
Timetable, Chicago time
09:24LF 8443 from MQY at the gate
12:02UA 3902 to Detroit leaves the gate
2 h 38 apart on the timetable
The last days
LF 8443 and UA 3902 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.