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

Return flights

04 Dec - 29 Jan	Volaris	direct
18 Dec - 11 Jan	Volaris	direct
13 Dec - 31 Jan	Volaris	direct
18 Dec - 08 Jan	Volaris	direct
17 Dec - 14 Jan	Volaris	direct
15 Dec - 26 Jan	Aeromexico	direct
05 Dec - 07 Dec	United
04 Dec - 07 Dec	United
24 Dec - 08 Jan	Volaris	direct
25 Dec - 01 Jan	Volaris	direct
24 Dec - 01 Jan	Volaris	direct
31 Dec - 30 Jan	Aeromexico	direct
03 Dec - 07 Dec	United
02 Dec - 07 Dec	United
09 Dec - 30 Dec	Viva
10 Dec - 30 Dec	Viva
16 Dec - 31 Dec	United
25 Dec - 31 Dec	Aeromexico
25 Dec - 30 Dec	Aeromexico
24 Dec - 31 Dec	Aeromexico

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

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.

Book a cheap hotel in Chicago

Cheap car rent in Chicago

Cheapest return flights from Mexico City to Chicago in December from $214

Return flights