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

Return flights

06 May - 13 May	Iberia
18 May - 27 May	Iberia
11 May - 18 May	Iberia
11 May - 27 May	Aeromexico
17 May - 24 May	Iberia
12 May - 19 May	Iberia
08 May - 22 May	Viva
07 May - 23 May	Aeromexico
12 May - 18 May	Aeromexico
27 May - 16 Jun	Aer Lingus
07 May - 16 May	Iberia
31 May - 07 Jun	Aeromexico
29 May - 12 Jun	Aeromexico
28 May - 14 Jun	Avianca
28 May - 13 Jun	Aeromexico
29 May - 06 Jun	Avianca
28 May - 06 Jun	Avianca

Also check the deals for one-way flights from Mexico City to Porto 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 Porto in May from 578€

Return flights