F9 3982 then AS 3155 at Denver
Salt Lake City → Denver → San Diego
Timetable, Denver time
13:19F9 3982 from Salt Lake City at the gate
19:59AS 3155 to San Diego leaves the gate
6 h 40 apart on the timetable
The last days
F9 3982 and AS 3155 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.