DL 1540 then UA 3243 at Detroit
Philadelphia → Detroit → Washington
Timetable, Detroit time
07:50DL 1540 from Philadelphia at the gate
12:45UA 3243 to Washington leaves the gate
4 h 55 apart on the timetable
Today
From the airport’s board at 16:41 Detroit time
07:39DL 1540 expected at the gate11 min early
13:04UA 3243 left the gate19 min late
5 h 25 between the gates, on these times
The last days
DL 1540 and UA 3243 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.