DL 3990 then DL 4051 at Detroit
Louisville → Detroit → Pittsburgh
Timetable, Detroit time
12:04DL 3990 from Louisville at the gate
22:50DL 4051 to Pittsburgh leaves the gate
10 h 46 apart on the timetable
The last days
DL 3990 and DL 4051 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 Pittsburgh
No later flight to Pittsburgh on the timetable.