AirHint found the following cheapest return flights from Stuttgart (STR) to Helsinki (HEL) in October 2025 (see full year).

Return flights

11 Oct - 20 Oct	Lufthansa
27 Oct - 08 Nov	KLM
31 Oct - 07 Nov	KLM
23 Oct - 28 Oct	KLM
22 Oct - 31 Oct	KLM
09 Oct - 19 Oct	KLM
23 Oct - 27 Oct	KLM
14 Oct - 17 Oct	KLM
27 Oct - 31 Oct	KLM
01 Oct - 05 Oct	KLM
31 Oct - 03 Nov	KLM
25 Oct - 30 Oct	KLM
02 Oct - 06 Oct	KLM
24 Oct - 03 Nov	Lufthansa
20 Oct - 02 Nov	KLM

Also check the deals for one-way flights from Stuttgart to Helsinki in October.

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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Cheapest return flights from Stuttgart to Helsinki in October from 188€

Return flights