AirHint found the following cheapest return flights from Cologne (CGN) to Seoul (ICN) in July 2025 (see full year).

Return flights

24 Jul - 08 Aug	Eurowings
14 Jul - 27 Jul	Eurowings
21 Jul - 27 Jul	Eurowings
09 Jul - 30 Jul	Turkish Airlines
07 Jul - 18 Jul	Eurowings
24 Jul - 09 Aug	Turkish Airlines
07 Jul - 14 Jul	Eurowings
30 Jul - 13 Aug	AJet
30 Jul - 22 Aug	AJet
30 Jul - 23 Aug	AJet
30 Jul - 14 Aug	AJet
15 Jul - 05 Aug	Lufthansa
29 Jul - 16 Aug	Turkish Airlines
31 Jul - 18 Aug	Ryanair
31 Jul - 24 Aug	Ryanair
06 Jul - 16 Jul	Turkish Airlines
06 Jul - 15 Jul	Turkish Airlines
05 Jul - 16 Jul	Turkish Airlines

Also check the deals for one-way flights from Cologne to Seoul in July.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Cologne to Seoul in July from 865€

Return flights