B6 318 then AA 4420 at Boston
New York JFK → Boston → New York LaGuardia
Timetable, Boston time
09:20B6 318 from New York JFK at the gate
14:31AA 4420 to New York LaGuardia leaves the gate
5 h 11 apart on the timetable
The last days
B6 318 and AA 4420 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.