AA 2978 then WN 3477 at Phoenix
Mazatlan → Phoenix → San Diego
Timetable, Phoenix time
16:35AA 2978 from Mazatlan at the gate
20:45WN 3477 to San Diego leaves the gate
4 h 10 apart on the timetable
The last days
AA 2978 and WN 3477 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.