Cheapest return ATH–HEL flights, September

AirHint found the following cheapest return flights from Athens (ATH) to Helsinki (HEL) in September 2026 (see full year).

Return flights

23 Sep - 27 Sep Volotea
23 Sep - 30 Sep Ryanair
04 Sep - 07 Sep Aegean Airlines
04 Sep - 08 Sep Aegean Airlines
19 Sep - 04 Oct easyJet
16 Sep - 21 Sep Volotea
02 Sep - 08 Sep Ryanair
01 Sep - 18 Oct airBaltic
15 Sep - 20 Sep Aegean Airlines
05 Sep - 08 Sep KLM
01 Sep - 15 Sep Norwegian Air Sweden AOC direct
22 Sep - 26 Sep Aegean Airlines
25 Sep - 03 Oct Pegasus Airlines
15 Sep - 03 Oct Norwegian Air Sweden AOC direct
29 Sep - 20 Oct Norwegian Air Sweden AOC direct
25 Sep - 02 Oct Aegean Airlines
15 Sep - 06 Oct Norwegian Air Sweden AOC direct
29 Sep - 03 Oct Norwegian Air Sweden AOC direct
29 Sep - 06 Oct Norwegian Air Sweden AOC direct
29 Sep - 19 Oct Norwegian Air Sweden AOC

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

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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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