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

Return flights

27 Dec - 31 Dec	Air Transat	direct
27 Dec - 16 Jan	Air Transat	direct
25 Dec - 31 Dec	Air Transat	direct
01 Dec - 07 Dec	Scandinavian Airlines
03 Dec - 10 Dec	TAP
23 Dec - 30 Dec	Air Canada
08 Dec - 09 Jan	Air Canada
06 Dec - 07 Jan	Air Transat	direct
25 Dec - 29 Dec	Lufthansa
03 Dec - 12 Dec	Lufthansa
27 Dec - 02 Jan	Air Transat	direct
19 Dec - 30 Dec	Air Canada
25 Dec - 02 Jan	Air Transat	direct
11 Dec - 14 Dec	Air Canada
27 Dec - 17 Jan	Lufthansa
18 Dec - 24 Dec	Air Canada
27 Dec - 10 Jan	Lufthansa
25 Dec - 04 Jan	Lufthansa
27 Dec - 01 Jan	Lufthansa
21 Dec - 04 Jan	TAP

Also check the deals for one-way flights from Porto to Toronto 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 Porto to Toronto in December from 338€

Return flights