PR 3897 then AS 3306 at San Francisco
Los Angeles → San Francisco → San Diego
Timetable, San Francisco time
18:02PR 3897 from Los Angeles at the gatealso PD 6294
18:29AS 3306 to San Diego leaves the gatealso DE 5145
27 min apart on the timetable
The last days
PR 3897 and AS 3306 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.