AA 4277 then AA 1323 at DFW
Rapid City → Dallas-Fort Worth → San Diego
Timetable, Dallas-Fort Worth time
09:29AA 4277 from Rapid City at the gate
18:02AA 1323 to San Diego leaves the gate
8 h 33 apart on the timetable
The last days
AA 4277 and AA 1323 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.