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

Return flights

18 Oct - 07 Nov	WestJet
28 Oct - 04 Nov	WestJet
24 Oct - 07 Nov	WestJet
28 Oct - 11 Nov	WestJet
28 Oct - 12 Nov	WestJet
28 Oct - 13 Nov	WestJet
10 Oct - 31 Oct	WestJet
11 Oct - 24 Oct	WestJet
21 Oct - 04 Nov	WestJet
27 Oct - 03 Nov	WestJet
11 Oct - 19 Oct	WestJet
21 Oct - 28 Oct	WestJet
28 Oct - 14 Nov	WestJet
28 Oct - 01 Nov	WestJet
08 Oct - 24 Oct	WestJet
06 Oct - 19 Oct	KLM
22 Oct - 31 Oct	KLM
26 Oct - 29 Oct	Air Canada

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