AA 434 then UA 3683 at O'Hare
San Francisco → Chicago → Buffalo
Timetable, Chicago time
06:59AA 434 from San Francisco at the gate
14:17UA 3683 to Buffalo leaves the gate
7 h 18 apart on the timetable
The last days
AA 434 and UA 3683 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.