AA 2143 then AA 3961 at Boston
Chicago O'Hare → Boston → Louisville
Timetable, Boston time
11:59AA 2143 from Chicago O'Hare at the gate
14:57AA 3961 to Louisville leaves the gate
2 h 58 apart on the timetable
The last days
AA 2143 and AA 3961 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 Louisville
No later flight to Louisville on the timetable.