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

Return flights

28 Oct - 04 Nov	WestJet
20 Oct - 27 Oct	WestJet
30 Oct - 03 Nov	WestJet
20 Oct - 31 Oct	United
24 Oct - 03 Nov	WestJet
22 Oct - 28 Oct	WestJet
31 Oct - 07 Nov	WestJet	direct
06 Oct - 13 Oct	WestJet
30 Oct - 02 Nov	WestJet
13 Oct - 18 Oct	WestJet
03 Oct - 12 Oct	WestJet
08 Oct - 15 Oct	WestJet
12 Oct - 18 Oct	WestJet
12 Oct - 19 Oct	WestJet
14 Oct - 21 Oct	WestJet
15 Oct - 15 Nov	WestJet

Also check the deals for one-way flights from Calgary to Cancun 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 Cancun in October from 276€

Return flights