AirHint found the following cheapest one-way flights from Austin (AUS) to Mexico City (MEX) in December 2025 (see full year).
One-Way flights
| 31 Dec | Viva | ||
| 03 Dec | Viva | ||
| 08 Dec | Viva | ||
| 01 Dec | Viva | ||
| 14 Dec | Viva | ||
| 12 Dec | Viva | ||
| 15 Dec | Viva | ||
| 13 Dec | Viva | ||
| 10 Dec | Viva | ||
| 06 Dec | Spirit Airlines |
Also check the deals for return flights from Austin to Mexico City in December.
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