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

Return flights

08 Mar - 24 Mar	Ryanair
15 Mar - 27 Mar	Ryanair
10 Mar - 20 Mar	Ryanair
20 Mar - 27 Mar	Ryanair
09 Mar - 15 Mar	Ryanair
05 Mar - 18 Mar	Ryanair
11 Mar - 21 Mar	Ryanair
10 Mar - 16 Mar	Ryanair
12 Mar - 19 Mar	Pegasus Airlines
16 Mar - 24 Mar	Eurowings
19 Mar - 01 Apr	Eurowings
22 Mar - 05 Apr	Wizz Air Malta
19 Mar - 10 Apr	Ryanair
31 Mar - 11 Apr	Ryanair
31 Mar - 21 Apr	Lufthansa

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

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 March from 504€

Return flights