AM 686 then UA 545 at O'Hare
Mexico City → Chicago → Philadelphia
Timetable, Chicago time
13:12AM 686 from Mexico City at the gate
19:45UA 545 to Philadelphia leaves the gate
6 h 33 apart on the timetable
Today
From the airport’s board at 16:43 Chicago time
13:20AM 686 reached the gate8 min late
19:45UA 545 due to leave, no estimate yet
6 h 25 between the gates, on these times
The last days
AM 686 and UA 545 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.