The cheapest round-trip from Helsinki to Cologne is about 203 EUR, usually in August 2026; June 2026 is priciest, so booking the low month saves around 160 EUR (~44%). Typical fare ~238 EUR, from 61 priced fares. Flightmussy live data, updated 2026-06-13.
Cheap flights from Helsinki (HEL) to Cologne (CGN). 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: 203 EUR, usually around August 2026. Typical fare ~238 EUR. Across the year prices range roughly 203–363 EUR — about 44% cheaper in the low season than the peak (June 2026). Carriers on this route include Lufthansa, Eurowings, Austrian, Lufthansa City Airlines.
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. August 2026 is cheapest; June 2026 is priciest.
| Jun 2026 | 363 EUR | |
|---|---|---|
| Jul 2026 | 238 EUR | |
| Aug 2026 | 203 EUR |
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