AA 4635 then AA 2504 at O'Hare
Washington National → Chicago → Houston
Timetable, Chicago time
23:30AA 4635 from Washington National at the gate
07:21AA 2504 to Houston leaves the gate
7 h 51 apart on the timetable, overnight
The last days
AA 4635 and AA 2504 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.