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

Return flights

29 Dec - 31 Dec	Viva	direct
28 Dec - 31 Dec	Viva	direct
10 Dec - 15 Dec	Viva
10 Dec - 17 Dec	Viva
10 Dec - 15 Dec	Viva	direct
10 Dec - 26 Dec	Viva
10 Dec - 21 Dec	Viva
10 Dec - 31 Dec	Viva	direct
10 Dec - 17 Dec	Viva	direct
15 Dec - 31 Dec	Viva	direct
29 Dec - 07 Jan	Viva
28 Dec - 07 Jan	Viva
29 Dec - 07 Jan	Viva	direct
28 Dec - 07 Jan	Viva	direct
29 Dec - 03 Jan	Viva	direct
28 Dec - 03 Jan	Viva	direct
22 Dec - 07 Jan	United
17 Dec - 07 Jan	Viva
26 Dec - 07 Jan	Viva
17 Dec - 07 Jan	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 $293

Return flights