AA 2950 then AA 3748 at Boston
Chicago O'Hare → Boston → Washington National
Timetable, Boston time
09:37AA 2950 from Chicago O'Hare at the gate
21:15AA 3748 to Washington National leaves the gate
11 h 38 apart on the timetable
Boston’s board gives an arrival time for only about 58% of its flights, so many days show no gate time.
The last days
AA 2950 and AA 3748 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.
Later flights to Washington National
DL 570421:4512 h 08 after AA 2950 on the timetablenot a partner airline