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

Return flights

05 Dec - 07 Dec	Lufthansa
03 Dec - 07 Dec	Lufthansa
04 Dec - 10 Dec	Lufthansa
05 Dec - 08 Dec	Lufthansa
03 Dec - 10 Dec	Lufthansa
05 Dec - 10 Dec	Lufthansa
05 Dec - 09 Dec	Air Canada
03 Dec - 09 Dec	Air Canada
04 Dec - 08 Dec	Air Canada
13 Dec - 15 Jan	Lufthansa
13 Dec - 22 Jan	Lufthansa
02 Dec - 08 Dec	SWISS
25 Dec - 09 Jan	Lufthansa
23 Dec - 12 Jan	Air Canada
19 Dec - 07 Jan	Air Canada
03 Dec - 06 Jan	Air Canada
22 Dec - 06 Jan	Air Transat
20 Dec - 05 Jan	Lufthansa
26 Dec - 06 Jan	Air Transat	direct
23 Dec - 06 Jan	Air Transat

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 354€

Return flights