Cheapest return flights from Istanbul to Helsinki in September from $182

Best time to book flights for Istanbul (IST) to Helsinki (HEL) flights at AirHint

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

Return flights

17 Sep - 24 Sep Pegasus Airlines direct
22 Sep - 28 Sep AJet
20 Sep - 25 Sep Pegasus Airlines direct
18 Sep - 22 Sep Pegasus Airlines direct
18 Sep - 25 Sep Pegasus Airlines direct
03 Sep - 24 Sep Pegasus Airlines direct
02 Sep - 09 Sep Pegasus Airlines
12 Sep - 19 Sep Pegasus Airlines direct
08 Sep - 08 Oct airBaltic
22 Sep - 28 Sep Pegasus Airlines direct
03 Sep - 10 Sep Pegasus Airlines direct
01 Sep - 06 Oct Pegasus Airlines direct
08 Sep - 08 Oct Pegasus Airlines direct

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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