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

Return flights

12 Dec - 01 Jan	Viva	direct
13 Dec - 01 Jan	Viva	direct
12 Dec - 13 Dec	Viva	direct
24 Dec - 29 Dec	United
24 Dec - 09 Jan	Viva	direct
12 Dec - 31 Dec	Viva	direct
13 Dec - 31 Dec	Viva	direct
18 Dec - 01 Jan	Viva	direct
15 Dec - 01 Jan	Viva	direct
12 Dec - 14 Dec	Viva	direct
23 Dec - 28 Dec	United
13 Dec - 14 Dec	Viva	direct
13 Dec - 02 Jan	Viva	direct
08 Dec - 13 Dec	Viva	direct
24 Dec - 12 Jan	Viva	direct
17 Dec - 01 Jan	Viva	direct
12 Dec - 28 Dec	Viva	direct
18 Dec - 31 Dec	Viva	direct
24 Dec - 10 Jan	Viva	direct
18 Dec - 05 Jan	Viva	direct

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

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Cheapest return flights from Monterrey to Austin in December from 230€

Return flights