DL 3990 then DL 2517 at Detroit
Louisville → Detroit → Nashville
Timetable, Detroit time
12:04DL 3990 from Louisville at the gate
21:59DL 2517 to Nashville leaves the gate
9 h 55 apart on the timetable
The last days
DL 3990 and DL 2517 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 Nashville
DL 107122:0510 h 01 after DL 3990 on the timetable