YX 790 then AA 2548 at O'Hare
Montréal → Chicago → Philadelphia
Timetable, Chicago time
08:35YX 790 from Montréal at the gate
19:29AA 2548 to Philadelphia leaves the gate
10 h 54 apart on the timetable
The last days
YX 790 and AA 2548 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.