AA 5490 then LN 744 at Dulles
Charlotte → Washington → Buffalo
Timetable, Washington time
08:44AA 5490 from Charlotte at the gate
13:01LN 744 to Buffalo leaves the gate
4 h 17 apart on the timetable
The last days
AA 5490 and LN 744 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.