F9 687 then DL 1940 at Denver
Washington National → Denver → Salt Lake City
Timetable, Denver time
15:09F9 687 from Washington National at the gate
16:00DL 1940 to Salt Lake City leaves the gate
51 min apart on the timetable
The last days
F9 687 and DL 1940 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.