RF 558 then WE 513 at Incheon
Nha Trang → Seoul → Osaka
Timetable, Seoul time
06:55RF 558 from Nha Trang at the gate
14:45WE 513 to Osaka leaves the gate
7 h 50 apart on the timetable
The last days
RF 558 and WE 513 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.