WN 202 then WN 213 at Phoenix
Boise → Phoenix → St Louis
Timetable, Phoenix time
12:25WN 202 from Boise at the gate
16:40WN 213 to St Louis leaves the gate
4 h 15 apart on the timetable
The last days
WN 202 and WN 213 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.