AirHint found the following cheapest return flights from Quebec (YQB) to Lisbon (LIS) in December 2025 (see full year).
Return flights
| 15 Dec - 10 Jan | Air Canada | ||
| 28 Dec - 12 Jan | Air Canada | ||
| 27 Dec - 17 Jan | Lufthansa | ||
| 18 Dec - 11 Jan | Air Canada | ||
| 19 Dec - 26 Dec | Air Canada |
Also check the deals for one-way flights from Quebec to Lisbon in December.
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