Cheapest one-way flights from Chicago to Mexico City in December from $180

AirHint found the following cheapest one-way flights from Chicago (MDW) to Mexico City (MEX) in December 2025 (see full year).

One-Way flights

03 Dec Aeromexico
30 Dec Frontier Airlines
13 Dec Frontier Airlines
24 Dec Frontier Airlines
10 Dec Frontier Airlines
01 Dec Frontier Airlines
29 Dec Frontier Airlines
27 Dec Frontier Airlines
25 Dec Frontier Airlines
21 Dec Frontier Airlines

Also check the deals for return flights from Chicago to Mexico City in December.

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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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