AirHint found the following cheapest return flights from Mexico City (MEX) to Hanoi (HAN) in December 2025 (see full year).
Return flights
| 27 Dec - 20 Jan | Viva | ||
| 31 Dec - 15 Jan | Volaris | ||
| 25 Dec - 09 Jan | Viva | ||
| 26 Dec - 06 Jan | Viva | ||
| 25 Dec - 31 Dec | Viva | ||
| 23 Dec - 30 Dec | Viva |
Also check the deals for one-way flights from Mexico City to Hanoi in December.
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