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

Return flights

30 Sep - 07 Oct	Ryanair
25 Sep - 03 Oct	Air Europa
25 Sep - 29 Sep	Air Europa
30 Sep - 04 Oct	Ryanair
25 Sep - 01 Oct	Air Europa
30 Sep - 05 Oct	Ryanair
18 Sep - 29 Sep	Ryanair
28 Sep - 04 Oct	Wizz Air Malta
18 Sep - 21 Sep	Air Europa
30 Sep - 03 Oct	Ryanair
18 Sep - 24 Sep	Air Europa
18 Sep - 22 Sep	Air Europa
24 Sep - 28 Sep	Ryanair
26 Sep - 29 Sep	Ryanair
29 Sep - 05 Oct	Ryanair
29 Sep - 04 Oct	Ryanair
29 Sep - 01 Oct	Wizz Air Malta
25 Sep - 28 Sep	Wizz Air Malta
20 Sep - 23 Sep	Air Europa
23 Sep - 25 Sep	Ryanair

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

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 Madrid to Helsinki in September from 186€

Return flights