Cheapest return flights from Boston to Helsinki in December from 338€

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

Return flights

02 Dec - 09 Dec Icelandair
09 Dec - 16 Dec Icelandair
04 Dec - 11 Dec Scandinavian Airlines
31 Dec - 07 Jan Icelandair
10 Dec - 14 Dec Scandinavian Airlines
11 Dec - 18 Dec Icelandair
06 Dec - 13 Dec Scandinavian Airlines
07 Dec - 14 Dec Scandinavian Airlines
28 Dec - 17 Jan Scandinavian Airlines
12 Dec - 28 Dec Scandinavian Airlines
30 Dec - 06 Jan Scandinavian Airlines
13 Dec - 20 Dec Icelandair
14 Dec - 21 Dec Scandinavian Airlines
26 Dec - 01 Jan Scandinavian Airlines
27 Dec - 01 Jan Scandinavian Airlines
21 Dec - 07 Jan Icelandair
21 Dec - 10 Jan Icelandair
22 Dec - 17 Jan Azores Airlines
29 Dec - 05 Jan Scandinavian Airlines
13 Dec - 04 Jan Icelandair

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

Powered by

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

Feel free to contact us with any feedback or request another flight research.