AA 4447 then 9K 6178 at JFK
Columbia → New York → Boston
Timetable, New York time
07:38AA 4447 from Columbia at the gate
12:559K 6178 to Boston leaves the gate
5 h 17 apart on the timetable
The last days
AA 4447 and 9K 6178 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.