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

Return flights

29 Aug - 06 Sep	SWISS
31 Aug - 08 Sep	Air Canada
24 Aug - 06 Sep	British Airways
24 Aug - 07 Sep	British Airways
31 Aug - 07 Sep	Air Canada
28 Aug - 06 Sep	Ryanair
26 Aug - 06 Sep	Ryanair
26 Aug - 31 Aug	United
25 Aug - 06 Sep	United
25 Aug - 05 Sep	United
30 Aug - 07 Sep	United
26 Aug - 30 Aug	Air Canada
22 Aug - 29 Aug	SWISS
25 Aug - 31 Aug	Air Europa
19 Aug - 30 Aug	Brussels Airlines
19 Aug - 28 Aug	Air France
18 Aug - 25 Aug	Ryanair
18 Aug - 30 Aug	Lufthansa
18 Aug - 26 Aug	Ryanair
21 Aug - 28 Aug	Air France

Also check the deals for one-way flights from Porto to Cancun in August.

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 August from 541€

Return flights