AirHint found the following cheapest return flights from Mexico City (MEX) to Chicago (ORD) in October 2025 (see full year).

Return flights

27 Oct - 08 Nov	Volaris	direct
22 Oct - 08 Nov	Viva
18 Oct - 14 Nov	Volaris	direct
21 Oct - 08 Nov	Viva
02 Oct - 09 Oct	Viva
30 Oct - 04 Nov	Volaris	direct
05 Oct - 12 Oct	Volaris	direct
03 Oct - 12 Oct	Volaris	direct
22 Oct - 02 Nov	Viva
24 Oct - 08 Nov	Viva
25 Oct - 08 Nov	Viva
19 Oct - 08 Nov	Viva
06 Oct - 07 Oct	Viva
20 Oct - 08 Nov	Viva
19 Oct - 26 Oct	Viva
02 Oct - 06 Oct	Volaris
02 Oct - 07 Oct	Viva
06 Oct - 11 Oct	Viva
06 Oct - 12 Oct	Viva
04 Oct - 09 Oct	Viva

Also check the deals for one-way flights from Mexico City to Chicago in October.

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 October from $199

Return flights