UA 6137 then DL 5115 at Detroit
Washington → Detroit → Columbus (Ohio)
Timetable, Detroit time
10:18UA 6137 from Washington at the gate
14:10DL 5115 to Columbus (Ohio) leaves the gate
3 h 52 apart on the timetable
The last days
UA 6137 and DL 5115 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.