AirHint found the following cheapest return flights from Helsinki (HEL) to Seoul (ICN) in September 2026 (see full year).
Return flights
| 15 Sep - 13 Oct | Lufthansa | ||
| 15 Sep - 13 Oct | Finnair | direct | |
| 02 Sep - 10 Sep | Finnair | direct | |
| 01 Sep - 30 Sep | Turkish Airlines | ||
| 09 Sep - 23 Sep | Finnair |
Also check the deals for one-way flights from Helsinki to Seoul in September.
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