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

Return flights

25 Aug - 08 Sep	United
27 Aug - 31 Aug	United
26 Aug - 03 Sep	United
19 Aug - 26 Aug	Vueling Airlines
20 Aug - 27 Aug	Wizz Air Malta
18 Aug - 25 Aug	United
11 Aug - 02 Sep	United
21 Aug - 29 Aug	Ryanair
22 Aug - 22 Aug	TAP
08 Aug - 16 Aug	TAP
01 Aug - 21 Aug	United
03 Aug - 14 Aug	TAP
03 Aug - 05 Sep	Ryanair
01 Aug - 10 Aug	Air Canada

Also check the deals for one-way flights from Lisbon to Mexico City 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 Lisbon to Mexico City in August from $856

Return flights