AA 9403 then UA 3036 at San Francisco
San Diego → San Francisco → Chicago O'Hare
Timetable, San Francisco time
08:52AA 9403 from San Diego at the gate
12:27UA 3036 to Chicago O'Hare leaves the gate
3 h 35 apart on the timetable
Today
From the airport’s board at 07:15 San Francisco time
08:52AA 9403 is cancelled
12:27UA 3036 due to leave, no estimate yet
The last days
AA 9403 and UA 3036 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.