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

Return flights

06 May - 14 May	Air Canada
04 May - 25 May	Air Canada
04 May - 21 May	Air Canada
07 May - 17 May	British Airways
06 May - 10 May	British Airways
19 May - 04 Jun	Air Canada
13 May - 27 May	British Airways
01 May - 12 May	Iberia
01 May - 14 May	Iberia
21 May - 24 May	Iberia
01 May - 13 May	Air Canada
29 May - 14 Jun	Avianca
27 May - 14 Jun	Iberia
26 May - 14 Jun	Iberia

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

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 May from 640€

Return flights