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

Return flights

31 Aug - 07 Sep	United
28 Aug - 08 Sep	United
29 Aug - 08 Sep	United
31 Aug - 11 Sep	United
29 Aug - 06 Sep	United
29 Aug - 09 Sep	United
27 Aug - 08 Sep	Air Europa
29 Aug - 14 Sep	SWISS
26 Aug - 04 Sep	Air Europa
26 Aug - 06 Sep	Air Europa
23 Aug - 30 Aug	Ryanair
24 Aug - 30 Aug	Air France
23 Aug - 31 Aug	Ryanair
22 Aug - 29 Aug	Ryanair
24 Aug - 31 Aug	TAP
22 Aug - 31 Aug	TAP

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 597€

Return flights