AirHint found the following cheapest return flights from Seoul (GMP) to Helsinki (HEL) in September 2026 (see full year).
Return flights
| 02 Sep - 15 Sep | Japan Airlines | ||
| 02 Sep - 16 Sep | Japan Airlines | ||
| 03 Sep - 16 Sep | Japan Airlines | ||
| 23 Sep - 03 Oct | Japan Airlines |
Also check the deals for one-way flights from Seoul to Helsinki in September.
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