AA 4649 then UA 3755 at O'Hare
Pittsburgh → Chicago → Denver
Timetable, Chicago time
11:03AA 4649 from Pittsburgh at the gate
18:37UA 3755 to Denver leaves the gate
7 h 34 apart on the timetable
Today
From the airport’s board at 09:57 Chicago time
11:03AA 4649 is cancelled
18:37UA 3755 due to leave, no estimate yet
The last days
AA 4649 and UA 3755 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.