KE 146 then 7C 1129 at Incheon
Changsha → Seoul → Tokyo Narita
Timetable, Seoul time
04:15KE 146 from Changsha at the gate
11:307C 1129 to Tokyo Narita leaves the gate
7 h 15 apart on the timetable
The last days
KE 146 and 7C 1129 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.