The cheapest round-trip from Helsinki to Seoul is about 698 EUR, usually in October 2026; July 2026 is priciest, so booking the low month saves around 161 EUR (~19%). Typical fare ~777 EUR, from 152 priced fares. Flightmussy live data, updated 2026-06-13.
Cheap flights from Helsinki (HEL) to Seoul (ICN/GMP). Free, no signup, no ads, no tracking. Compare every airline across 12 months of fares on one heatmap — including low-cost carriers Google Flights often deprioritises.
Cheapest round-trip seen: 698 EUR, usually around October 2026. Typical fare ~777 EUR. Across the year prices range roughly 698–859 EUR — about 19% cheaper in the low season than the peak (July 2026). Carriers on this route include China Southern, Qatar Airways, Finnair, Emirates.
Based on Flightmussy's live 12-month fare data; prices last updated 2026-06-13. Prices change constantly — search live for current fares.
The lowest round-trip fare we found for each month over the coming year — low season versus peak at a glance. October 2026 is cheapest; July 2026 is priciest.
| Jun 2026 | 796 EUR | |
|---|---|---|
| Jul 2026 | 859 EUR | |
| Aug 2026 | 779 EUR | |
| Sep 2026 | 776 EUR | |
| Oct 2026 | 698 EUR | |
| Nov 2026 | 698 EUR |
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