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

Return flights

12 May - 28 May	Viva
12 May - 21 May	Viva
24 May - 28 May	Viva
12 May - 22 May	Viva
23 May - 28 May	Viva
12 May - 24 May	Viva
12 May - 16 May	Viva
12 May - 25 May	Viva
12 May - 20 May	Viva
12 May - 19 May	Viva
31 May - 05 Jun	Viva
27 May - 05 Jun	Viva
24 May - 05 Jun	Viva
23 May - 05 Jun	Viva
12 May - 02 Jun	Viva
31 May - 02 Jun	Viva
27 May - 02 Jun	Viva
24 May - 02 Jun	Viva
26 May - 05 Jun	Viva
23 May - 02 Jun	Viva

Also check the deals for one-way flights from Mexico City to Chicago 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 Chicago in May from $234

Return flights