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

Return flights

31 Dec - 19 Jan	Viva
31 Dec - 20 Jan	Viva
31 Dec - 15 Jan	Viva
28 Dec - 21 Jan	Viva	direct
31 Dec - 12 Jan	Viva
31 Dec - 19 Jan	Viva	direct
28 Dec - 20 Jan	Viva
31 Dec - 21 Jan	Viva
31 Dec - 11 Jan	Viva
31 Dec - 16 Jan	Viva
24 Dec - 31 Dec	Viva	direct
31 Dec - 31 Dec	Viva	direct
29 Dec - 31 Dec	Viva	direct
27 Dec - 28 Dec	Viva	direct
27 Dec - 31 Dec	Viva	direct
24 Dec - 25 Dec	Viva
28 Dec - 31 Dec	Viva	direct
26 Dec - 28 Dec	Viva	direct
19 Dec - 21 Dec	Viva	direct
24 Dec - 27 Dec	Viva	direct

Also check the deals for one-way flights from Chicago to Monterrey 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 Monterrey

Cheap car rent in Monterrey

Cheapest return flights from Chicago to Monterrey in December from $347

Return flights