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

Return flights

10 Dec - 24 Dec	Scandinavian Airlines
09 Dec - 23 Dec	Scandinavian Airlines
03 Dec - 11 Dec	Icelandair
09 Dec - 15 Dec	British Airways
03 Dec - 17 Dec	Scandinavian Airlines
02 Dec - 16 Dec	Scandinavian Airlines
15 Dec - 30 Jan	Lufthansa
16 Dec - 22 Dec	Scandinavian Airlines
06 Dec - 27 Dec	Lufthansa
22 Dec - 26 Dec	Icelandair
21 Dec - 28 Dec	Scandinavian Airlines

Also check the deals for one-way flights from Toronto 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 Toronto to Helsinki in December from 474€

Return flights