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

Return flights

07 May - 13 May	Viva
06 May - 13 May	Viva
12 May - 13 May	Viva
12 May - 16 May	Viva
07 May - 16 May	Viva
06 May - 16 May	Viva
01 May - 13 May	Viva
11 May - 13 May	Viva
05 May - 13 May	Viva
13 May - 13 May	Viva
20 May - 05 Jun	Viva	direct
23 May - 10 Jun	Viva
20 May - 03 Jun	Viva	direct
23 May - 03 Jun	Viva
23 May - 05 Jun	Viva
22 May - 03 Jun	Viva
22 May - 10 Jun	Viva
22 May - 05 Jun	Viva
28 May - 10 Jun	Viva
25 May - 10 Jun	Viva

Also check the deals for one-way flights from Chicago to Mexico City 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 Chicago to Mexico City in May from 187€

Return flights