5A 623 then DL 4315 at Salt Lake City
Idaho Falls → Salt Lake City → St George
Timetable, Salt Lake City time
10:005A 623 from Idaho Falls at the gate
15:35DL 4315 to St George leaves the gate
5 h 35 apart on the timetable
The last days
5A 623 and DL 4315 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.