WN 3870 then WN 4402 at Phoenix
Las Vegas → Phoenix → Boise
Timetable, Phoenix time
08:05WN 3870 from Las Vegas at the gate
08:55WN 4402 to Boise leaves the gate
50 min apart on the timetable
The last days
WN 3870 and WN 4402 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.