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

Return flights

16 Jan - 18 Jan	Frontier Airlines
26 Jan - 31 Jan	Delta
23 Jan - 27 Jan	Delta
21 Jan - 27 Jan	Delta
29 Jan - 31 Jan	Delta
28 Jan - 06 Feb	Delta
06 Jan - 13 Jan	Delta
08 Jan - 16 Jan	Frontier Airlines
16 Jan - 19 Jan	Frontier Airlines
29 Jan - 02 Feb	Delta
02 Jan - 10 Jan	Aeromexico
05 Jan - 09 Jan	Frontier Airlines
30 Jan - 01 Feb	Delta

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

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 January from 360€

Return flights