AA 2137 then AA 3980 at O'Hare
Austin → Chicago → Champaign
Timetable, Chicago time
09:00AA 2137 from Austin at the gate
13:49AA 3980 to Champaign leaves the gate
4 h 49 apart on the timetable
The last days
AA 2137 and AA 3980 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.