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

Return flights

05 May - 12 May	Viva
05 May - 14 May	Viva
01 May - 03 May	Viva	direct
01 May - 12 May	Viva	direct
01 May - 14 May	Viva	direct
04 May - 12 May	Viva	direct
04 May - 14 May	Viva	direct
05 May - 08 May	Viva
03 May - 03 May	Viva	direct
01 May - 08 May	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 $201

Return flights