AirHint found the following cheapest return flights from Quebec (YQB) to Lisbon (LIS) in October 2025 (see full year).

Return flights

23 Oct - 15 Nov	Air Canada
20 Oct - 07 Nov	Lufthansa
15 Oct - 05 Nov	Air Canada
25 Oct - 09 Nov	Air Canada
24 Oct - 04 Nov	Air Canada
14 Oct - 04 Nov	SWISS
07 Oct - 29 Oct	Air Canada
02 Oct - 23 Oct	Air Canada
31 Oct - 08 Nov	Air Canada
05 Oct - 23 Oct	PAL Airlines
08 Oct - 29 Oct	Air Canada
11 Oct - 20 Oct	Air Transat
08 Oct - 30 Oct	United
06 Oct - 27 Oct	United
07 Oct - 28 Oct	United
04 Oct - 25 Oct	Air Transat
14 Oct - 31 Oct	SWISS
31 Oct - 09 Nov	SWISS

Also check the deals for one-way flights from Quebec to Lisbon in October.

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 Quebec to Lisbon in October from $586

Return flights