DL 503 then DL 2665 at Atlanta
Detroit → Atlanta → Montréal
Timetable, Atlanta time
11:27DL 503 from Detroit at the gate
14:51DL 2665 to Montréal leaves the gate
3 h 24 apart on the timetable
The last days
DL 503 and DL 2665 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 Montréal
DL 241621:159 h 48 after DL 503 on the timetable