AirHint found the following cheapest return flights from Kolkata (CCU) to Helsinki (HEL) in December 2025 (see full year).
Return flights
| 22 Dec - 03 Jan | IndiGo | ||
| 26 Dec - 06 Jan | IndiGo | ||
| 23 Dec - 02 Jan | IndiGo | ||
| 01 Dec - 13 Dec | IndiGo | ||
| 23 Dec - 03 Jan | Etihad Airways |
Also check the deals for one-way flights from Kolkata to Helsinki in December.
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