WN 3576 then WN 1921 at Salt Lake City
Sacramento → Salt Lake City → Phoenix Sky Harbor
Timetable, Salt Lake City time
16:45WN 3576 from Sacramento at the gate
21:25WN 1921 to Phoenix Sky Harbor leaves the gate
4 h 40 apart on the timetable
The last days
WN 3576 and WN 1921 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.