Cheapest one-way flights from Istanbul to Helsinki in September from 85€

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

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

One-Way flights

03 Sep Pegasus Airlines direct

Also check the deals for return 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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