AA 642 then AA 3492 at O'Hare
Los Angeles → Chicago → Champaign
Timetable, Chicago time
07:05AA 642 from Los Angeles at the gate
11:00AA 3492 to Champaign leaves the gate
3 h 55 apart on the timetable
The last days
AA 642 and AA 3492 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.