DL 5761 then DL 8842 at Boston
New York LaGuardia → Boston → New York JFK
Timetable, Boston time
13:21DL 5761 from New York LaGuardia at the gate
18:00DL 8842 to New York JFK leaves the gate
4 h 39 apart on the timetable
The last days
DL 5761 and DL 8842 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.