AA 2386 then JL 10 at O'Hare
Philadelphia → Chicago → St Louis
Timetable, Chicago time
07:25AA 2386 from Philadelphia at the gate
16:00JL 10 to St Louis leaves the gate
8 h 35 apart on the timetable
The last days
AA 2386 and JL 10 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.