AA 3974 then WN 668 at Phoenix
Wichita → Phoenix → Denver
Timetable, Phoenix time
06:40AA 3974 from Wichita at the gate
07:35WN 668 to Denver leaves the gate
55 min apart on the timetable
The last days
AA 3974 and WN 668 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.