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

Return flights

23 Dec - 29 Dec	Air Canada
03 Dec - 10 Dec	Lufthansa
01 Dec - 09 Dec	Air Canada
08 Dec - 11 Jan	Air Canada
25 Dec - 30 Dec	SWISS
05 Dec - 09 Dec	SWISS
25 Dec - 01 Jan	Air France
27 Dec - 04 Jan	Air Canada
24 Dec - 07 Jan	Air France
07 Dec - 14 Dec	Air Canada
24 Dec - 07 Jan	Air Canada	direct
17 Dec - 05 Jan	Air Canada	direct
16 Dec - 06 Jan	Air Canada
25 Dec - 30 Dec	TAP	direct
25 Dec - 01 Jan	TAP	direct
16 Dec - 06 Jan	TAP	direct
30 Dec - 04 Jan	Air Canada
05 Dec - 09 Dec	Air Transat	direct
23 Dec - 29 Dec	TAP	direct
07 Dec - 14 Dec	TAP	direct

Also check the deals for one-way flights from Lisbon 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 Lisbon to Toronto in December from $422

Return flights