AirHint found the following cheapest return flights from Mexico City (MEX) to Lisbon (LIS) in August 2025 (see full year).

Return flights

10 Aug - 05 Sep	Iberia
24 Aug - 31 Aug	Viva
18 Aug - 30 Aug	Volaris
24 Aug - 13 Sep	Iberia
15 Aug - 23 Aug	Aeromexico
20 Aug - 04 Sep	Air Canada
20 Aug - 27 Aug	Aeromexico
22 Aug - 29 Aug	Volaris
21 Aug - 29 Aug	Iberia
05 Aug - 30 Aug	Viva
23 Aug - 31 Aug	Iberia
18 Aug - 01 Sep	Iberia
01 Aug - 29 Aug	Viva
31 Aug - 13 Sep	Aeromexico
25 Aug - 13 Sep	Air Canada
13 Aug - 26 Aug	Iberia
27 Aug - 15 Sep	Air France
20 Aug - 02 Sep	Delta
27 Aug - 10 Sep	Volaris
27 Aug - 04 Sep	Lufthansa

Also check the deals for one-way flights from Mexico City to Lisbon 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 Mexico City to Lisbon in August from $867

Return flights