Cheapest return flights from Cologne to Helsinki in September from $189

AirHint found the following cheapest return flights from Cologne (CGN) to Helsinki (HEL) in September 2025 (see full year).

Return flights

02 Sep - 06 Sep Ryanair
04 Sep - 09 Sep Ryanair
25 Sep - 28 Sep Lufthansa
12 Sep - 14 Sep Lufthansa
08 Sep - 10 Sep Ryanair
19 Sep - 25 Sep Lufthansa
07 Sep - 14 Sep Lufthansa
03 Sep - 07 Sep Lufthansa
10 Sep - 12 Sep Ryanair
25 Sep - 26 Sep Ryanair

Also check the deals for one-way flights from Cologne to Helsinki in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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