AC 3997 then UA 3036 at San Francisco
Boise → San Francisco → Chicago O'Hare
Timetable, San Francisco time
09:23AC 3997 from Boise at the gatealso UA 4639, NH 7335
12:27UA 3036 to Chicago O'Hare leaves the gate
3 h 04 apart on the timetable
Today
From the airport’s board at 13:17 San Francisco time
09:23AC 3997 is cancelled
12:26UA 3036 left the gate1 min early
The last days
AC 3997 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.