Cheapest return flights from Cologne to Helsinki in September from 148€

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

Return flights

30 Sep - 07 Oct Ryanair
25 Sep - 01 Oct Ryanair
11 Sep - 15 Sep Ryanair
25 Sep - 28 Sep Lufthansa
24 Sep - 26 Sep Ryanair
14 Sep - 21 Sep Lufthansa
13 Sep - 15 Sep Ryanair
19 Sep - 21 Sep Lufthansa
12 Sep - 14 Sep Lufthansa
05 Sep - 07 Sep Eurowings

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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