AA 2103 then AA 2397 at Phoenix
Dallas-Fort Worth → Phoenix → Ontario
Timetable, Phoenix time
11:20AA 2103 from Dallas-Fort Worth at the gate
15:11AA 2397 to Ontario leaves the gate
3 h 51 apart on the timetable
The last days
AA 2103 and AA 2397 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.