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

Return flights

02 Dec - 09 Dec	Finnair
09 Dec - 16 Dec	British Airways
08 Dec - 15 Dec	British Airways
03 Dec - 10 Dec	Finnair
04 Dec - 11 Dec	British Airways
10 Dec - 17 Dec	British Airways
05 Dec - 12 Dec	Air France
07 Dec - 14 Dec	Air France
06 Dec - 13 Dec	Air France
11 Dec - 18 Dec	Air Canada
29 Dec - 05 Jan	British Airways
25 Dec - 01 Jan	British Airways
30 Dec - 06 Jan	Air France
26 Dec - 02 Jan	British Airways
28 Dec - 04 Jan	British Airways

Also check the deals for one-way flights from Montreal 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.

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Cheapest return flights from Montreal to Helsinki in December from 564€

Return flights