Cheapest return flights from Istanbul to Helsinki in September from 133€

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

Return flights

21 Sep - 27 Sep Pegasus Airlines direct
20 Sep - 27 Sep Pegasus Airlines direct
27 Sep - 04 Oct Pegasus Airlines direct
23 Sep - 15 Oct Pegasus Airlines
27 Sep - 30 Sep Pegasus Airlines
29 Sep - 04 Oct AJet
24 Sep - 28 Sep Pegasus Airlines
27 Sep - 28 Sep Pegasus Airlines
30 Sep - 02 Oct Pegasus Airlines
23 Sep - 06 Oct Pegasus Airlines direct
29 Sep - 03 Oct AJet
29 Sep - 04 Oct Pegasus Airlines direct
23 Sep - 26 Sep Pegasus Airlines
23 Sep - 15 Oct Pegasus Airlines direct
23 Sep - 30 Sep Pegasus Airlines
29 Sep - 03 Oct Pegasus Airlines direct
30 Sep - 01 Oct Pegasus Airlines
21 Sep - 28 Sep Pegasus Airlines
22 Sep - 29 Sep Pegasus Airlines
26 Sep - 28 Sep Pegasus Airlines

Also check the deals for one-way flights from Istanbul 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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