AS 458 then DL 2150 at Seattle
Sacramento → Seattle → San Diego
Timetable, Seattle time
10:29AS 458 from Sacramento at the gate
15:00DL 2150 to San Diego leaves the gate
4 h 31 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 458 and DL 2150 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.