AS 475 then AS 1386 at Seattle
Ontario → Seattle → San Francisco
Timetable, Seattle time
13:56AS 475 from Ontario at the gate
18:33AS 1386 to San Francisco leaves the gate
4 h 37 apart on the timetable
Seattle’s board gives a departure time for only about 59% of its flights, so many days show no gate time.
The last days
AS 475 and AS 1386 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.