JL 15 then DL 1686 at Detroit
Bismarck → Detroit → Philadelphia
Timetable, Detroit time
12:43JL 15 from Bismarck at the gate
17:40DL 1686 to Philadelphia leaves the gate
4 h 57 apart on the timetable
The last days
JL 15 and DL 1686 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.
Later flights to Philadelphia
DL 240221:368 h 53 after JL 15 on the timetable