UA 531 then KD 318 at LAX
Denver → Los Angeles → Seoul
Timetable, Los Angeles time
22:55UA 531 from Denver at the gate
02:20KD 318 to Seoul leaves the gate
3 h 25 apart on the timetable, overnight
The last days
UA 531 and KD 318 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.