Cheapest return flights from Helsinki to Istanbul in September from $154

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

Return flights

20 Sep - 26 Sep Pegasus Airlines direct
10 Sep - 17 Sep Pegasus Airlines direct
22 Sep - 26 Sep Pegasus Airlines direct
23 Sep - 27 Sep Pegasus Airlines direct
22 Sep - 27 Sep Pegasus Airlines direct
29 Sep - 02 Oct Pegasus Airlines direct
09 Sep - 16 Sep Norwegian Air Sweden AOC
13 Sep - 01 Oct Pegasus Airlines direct
23 Sep - 28 Sep Pegasus Airlines direct
11 Sep - 15 Sep Pegasus Airlines direct
04 Sep - 08 Sep Norwegian Air Sweden AOC
24 Sep - 27 Sep Norwegian Air Sweden AOC
27 Sep - 02 Oct Pegasus Airlines direct
21 Sep - 01 Oct Finnair
29 Sep - 06 Oct Pegasus Airlines
03 Sep - 01 Oct Norwegian Air Sweden AOC
29 Sep - 07 Oct Pegasus Airlines
22 Sep - 23 Oct Norwegian Air Sweden AOC
21 Sep - 01 Oct Pegasus Airlines direct
22 Sep - 04 Oct Norwegian Air Sweden AOC

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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