AirHint found the following cheapest return flights from Istanbul (IST) to Helsinki (HEL) in April 2026 (see full year).

Return flights

15 Apr - 19 Apr	airBaltic
01 Apr - 05 Apr	airBaltic
13 Apr - 19 Apr	airBaltic
06 Apr - 12 Apr	airBaltic
22 Apr - 26 Apr	airBaltic
17 Apr - 26 Apr	airBaltic
08 Apr - 12 Apr	airBaltic
06 Apr - 10 Apr	airBaltic
29 Apr - 03 May	airBaltic
20 Apr - 24 Apr	airBaltic
16 Apr - 19 Apr	Lufthansa

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

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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Cheapest return flights from Istanbul to Helsinki in April from $126

Return flights