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

Return flights

11 May - 21 May	Viva	direct
14 May - 21 May	Viva	direct
11 May - 12 May	Viva
18 May - 21 May	Viva	direct
11 May - 31 May	Viva
28 May - 31 May	Viva
14 May - 31 May	Viva
18 May - 31 May	Viva
28 May - 06 Jun	Viva	direct
28 May - 05 Jun	Viva	direct
18 May - 06 Jun	Viva	direct
18 May - 05 Jun	Viva	direct
28 May - 08 Jun	Viva	direct
16 May - 20 May	United	direct
11 May - 31 May	United	direct
28 May - 07 Jun	United	direct
18 May - 08 Jun	Viva	direct
28 May - 10 Jun	Delta
28 May - 13 Jun	Viva	direct
18 May - 07 Jun	Viva

Also check the deals for one-way flights from Monterrey 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 Monterrey to Chicago in May from $269

Return flights