AirHint found the following cheapest return flights from Cologne (CGN) to Seoul (ICN) in September 2026 (see full year).
Return flights
| 28 Sep - 14 Oct | Turkish Airlines | ||
| 13 Sep - 29 Sep | Ryanair | ||
| 15 Sep - 22 Sep | Turkish Airlines | ||
| 08 Sep - 29 Sep | Turkish Airlines | ||
| 14 Sep - 24 Sep | Turkish Airlines | ||
| 13 Sep - 28 Sep | Pegasus Airlines |
Also check the deals for one-way flights from Cologne to Seoul in September.
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