CA 818 then CA 135 at Beijing
Washington → Beijing → Seoul Incheon
Timetable, Beijing time
03:55CA 818 from Washington at the gate
12:10CA 135 to Seoul Incheon leaves the gate
8 h 15 apart on the timetable
The last days
CA 818 and CA 135 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.