AA 3978 then AA 6281 at Denver
Phoenix Sky Harbor → Denver → Los Angeles
Timetable, Denver time
18:13AA 3978 from Phoenix Sky Harbor at the gate
18:46AA 6281 to Los Angeles leaves the gate
33 min apart on the timetable
The last days
AA 3978 and AA 6281 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.