TR 181 then KE 644 at Changi
Nanjing → Singapore → Seoul
Timetable, Singapore time
22:30TR 181 from Nanjing at the gate
22:30KE 644 to Seoul leaves the gate
0 min apart on the timetable
The last days
TR 181 and KE 644 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.