DL 5740 then DL 9899 at Boston
Philadelphia → Boston → New York JFK
Timetable, Boston time
07:31DL 5740 from Philadelphia at the gate
12:00DL 9899 to New York JFK leaves the gate
4 h 29 apart on the timetable
Today
From the airport’s board at 03:37 Boston time
07:13DL 5740 expected at the gate18 min early
12:00DL 9899 due to leave, no estimate yet
4 h 47 between the gates, on these times
The last days
DL 5740 and DL 9899 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.