K4 535 then K4 578 at O'Hare
Anchorage → Chicago → Seoul
Timetable, Chicago time
07:36K4 535 from Anchorage at the gate
07:40K4 578 to Seoul leaves the gate
4 min apart on the timetable
The last days
K4 535 and K4 578 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.