AirHint found the following cheapest return flights from Cologne (CGN) to Seoul (ICN) in January 2026 (see full year).

Return flights

08 Jan - 21 Jan	Ryanair
08 Jan - 22 Jan	Ryanair
12 Jan - 31 Jan	Pegasus Airlines
05 Jan - 18 Jan	Eurowings
05 Jan - 19 Jan	Eurowings
15 Jan - 18 Jan	Ryanair
05 Jan - 11 Jan	Eurowings
23 Jan - 26 Jan	Turkish Airlines

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

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 January from 426€

Return flights