DL 2251 then AA 3822 at O'Hare
New York LaGuardia → Chicago → Harrisburg
Timetable, Chicago time
07:42DL 2251 from New York LaGuardia at the gate
11:45AA 3822 to Harrisburg leaves the gate
4 h 03 apart on the timetable
The last days
DL 2251 and AA 3822 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.