YP 1322 then YP 735 at Incheon
Newark → Seoul → Tokyo Narita
Timetable, Seoul time
04:55YP 1322 from Newark at the gate
13:55YP 735 to Tokyo Narita leaves the gate
9 h apart on the timetable
The last days
YP 1322 and YP 735 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.