AA 4125 then K4 556 at O'Hare
Washington National → Chicago → Tokyo Narita
Timetable, Chicago time
23:44AA 4125 from Washington National at the gate
04:40K4 556 to Tokyo Narita leaves the gate
4 h 56 apart on the timetable, overnight
The last days
AA 4125 and K4 556 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.