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

Return flights

19 Oct - 08 Nov	Iberia
18 Oct - 08 Nov	WestJet
02 Oct - 25 Oct	Iberia
20 Oct - 20 Nov	WestJet
22 Oct - 22 Nov	WestJet
23 Oct - 06 Nov	WestJet
04 Oct - 14 Oct	WestJet
06 Oct - 01 Nov	WestJet
23 Oct - 03 Nov	WestJet
13 Oct - 20 Oct	WestJet
22 Oct - 03 Nov	WestJet
18 Oct - 25 Oct	WestJet
09 Oct - 17 Oct	WestJet
04 Oct - 11 Oct	WestJet
10 Oct - 01 Nov	WestJet
06 Oct - 19 Oct	WestJet
04 Oct - 25 Oct	WestJet
13 Oct - 24 Oct	Air Canada
11 Oct - 12 Oct	WestJet

Also check the deals for one-way flights from Calgary 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 Calgary to Lisbon in October from $480

Return flights