AA 2263 then AA 1225 at Miami
Phoenix → Miami → Boston
Timetable, Miami time
07:05AA 2263 from Phoenix at the gate
10:39AA 1225 to Boston leaves the gate
3 h 34 apart on the timetable
The last days
AA 2263 and AA 1225 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.