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

Return flights

27 Dec - 11 Jan	TAP	direct
05 Dec - 16 Dec	TAP	direct
11 Dec - 16 Dec	TAP	direct
07 Dec - 17 Dec	TAP	direct
10 Dec - 17 Dec	TAP	direct
08 Dec - 15 Dec	TAP	direct
27 Dec - 25 Jan	TAP	direct
02 Dec - 09 Dec	TAP	direct
12 Dec - 24 Dec	TAP	direct
12 Dec - 27 Dec	TAP	direct
12 Dec - 28 Dec	TAP	direct
26 Dec - 18 Jan	TAP	direct
26 Dec - 01 Jan	TAP	direct
26 Dec - 09 Jan	TAP	direct
12 Dec - 29 Dec	Azores Airlines
29 Dec - 01 Jan	TAP	direct
27 Dec - 07 Jan	Air Transat
27 Dec - 05 Jan	TAP	direct
28 Dec - 05 Jan	TAP	direct
23 Dec - 09 Jan	TAP	direct

Also check the deals for one-way flights from Toronto to Lisbon 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 Lisbon in December from 471€

Return flights