AirHint found the following cheapest return flights from Kathmandu (KTM) to Helsinki (HEL) in December 2025 (see full year).
Return flights
| 22 Dec - 06 Jan | Thai Lion Air | ||
| 29 Dec - 04 Jan | Air Arabia | ||
| 27 Dec - 31 Dec | IndiGo | ||
| 16 Dec - 23 Dec | IndiGo | ||
| 27 Dec - 03 Jan | IndiGo |
Also check the deals for one-way flights from Kathmandu to Helsinki in December.
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