Cheapest return flights from Helsinki to Istanbul in September from 140€

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

Return flights

04 Sep - 10 Sep Pegasus Airlines direct
09 Sep - 12 Sep Pegasus Airlines direct
04 Sep - 08 Sep Pegasus Airlines direct
29 Sep - 04 Oct Norwegian Air Sweden AOC
10 Sep - 14 Sep Pegasus Airlines direct
28 Sep - 01 Oct Pegasus Airlines direct
03 Sep - 10 Sep Pegasus Airlines direct
09 Sep - 14 Sep Pegasus Airlines direct
27 Sep - 04 Oct Pegasus Airlines direct
25 Sep - 30 Sep Pegasus Airlines direct
27 Sep - 02 Oct Pegasus Airlines direct
13 Sep - 17 Sep Pegasus Airlines
15 Sep - 24 Sep Pegasus Airlines direct
26 Sep - 30 Sep Pegasus Airlines direct
28 Sep - 04 Oct Pegasus Airlines direct
28 Sep - 05 Oct Pegasus Airlines
29 Sep - 04 Oct Pegasus Airlines direct
29 Sep - 07 Oct Norwegian Air Sweden AOC
22 Sep - 02 Oct Norwegian Air Sweden AOC
28 Sep - 05 Oct Pegasus Airlines direct

Also check the deals for one-way flights from Helsinki to Istanbul 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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