DL 5225 then DL 2135 at Atlanta
Augusta → Atlanta → Washington
Timetable, Atlanta time
08:12DL 5225 from Augusta at the gate
12:15DL 2135 to Washington leaves the gate
4 h 03 apart on the timetable
The last days
DL 5225 and DL 2135 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.