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

Return flights

22 Dec - 30 Dec	airBaltic
28 Dec - 02 Jan	airBaltic
26 Dec - 02 Jan	airBaltic
12 Dec - 14 Dec	airBaltic
05 Dec - 12 Dec	airBaltic
05 Dec - 08 Dec	airBaltic
07 Dec - 14 Dec	airBaltic
05 Dec - 07 Dec	airBaltic
08 Dec - 15 Dec	airBaltic
01 Dec - 05 Dec	airBaltic
29 Dec - 02 Jan	airBaltic
26 Dec - 04 Jan	airBaltic
28 Dec - 04 Jan	airBaltic
28 Dec - 01 Jan	airBaltic
31 Dec - 04 Jan	airBaltic
31 Dec - 02 Jan	airBaltic
31 Dec - 07 Jan	airBaltic
21 Dec - 02 Jan	airBaltic
24 Dec - 31 Dec	airBaltic
04 Dec - 07 Dec	Pegasus Airlines

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

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.

Book a cheap hotel in Helsinki

Cheap car rent in Helsinki

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

Return flights