Currently there are no direct flights Copenhagen to South Korea.

Flights Copenhagen to South Korea with 1 stopover:

Flights via  Beijing Capital (PEK), China
From Copenhagen (CPH), Denmark with Air China Transfer at  Beijing Capital (PEK), China Then on to Busan (PUS), South Korea with Air China
OR
Then on to  Seoul Gimpo (GMP) with Air China
Flights via  Munich (MUC), Germany
From Copenhagen (CPH), Denmark with Lufthansa Transfer at Munich (MUC), Germany Then on to Busan (PUS), South Korea with Lufthansa
Flights via Bangkok Suvarnabhumi (BKK), Thailand
From Copenhagen (CPH), Denmark with Thai Airways Transfer at Bangkok Suvarnabhumi (BKK), Thailand Then on to Busan (PUS), South Korea with Thai Airways