AirHint found the following cheapest return flights from Mexico City (MEX) to Lisbon (LIS) in September 2026 (see full year).

Return flights

10 Sep - 30 Sep	Air Canada
10 Sep - 23 Sep	Air Canada
10 Sep - 21 Sep	Air Canada
15 Sep - 28 Sep	British Airways
07 Sep - 16 Sep	British Airways
11 Sep - 09 Oct	British Airways
13 Sep - 23 Sep	Air Canada
08 Sep - 15 Sep	British Airways
06 Sep - 28 Sep	Iberia
24 Sep - 07 Oct	British Airways
11 Sep - 19 Sep	British Airways
15 Sep - 08 Oct	British Airways
14 Sep - 10 Oct	British Airways
20 Sep - 25 Sep	Iberia
28 Sep - 14 Oct	British Airways
23 Sep - 21 Oct	British Airways
22 Sep - 09 Oct	British Airways
15 Sep - 14 Oct	British Airways
13 Sep - 09 Oct	British Airways
14 Sep - 09 Oct	British Airways

Also check the deals for one-way flights from Mexico City to Lisbon in September.

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 September from $730

Return flights