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

Return flights

02 Oct - 12 Oct	British Airways
02 Oct - 09 Oct	British Airways
05 Oct - 12 Oct	British Airways
08 Oct - 13 Oct	British Airways
06 Oct - 13 Oct	British Airways
05 Oct - 11 Oct	British Airways
13 Oct - 18 Oct	British Airways
13 Oct - 17 Oct	Air Europa
28 Oct - 04 Nov	United
20 Oct - 01 Nov	British Airways
24 Oct - 01 Nov	Ryanair
22 Oct - 26 Oct	British Airways

Also check the deals for one-way flights from Porto 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 Porto to Cancun in October from $514

Return flights