AirHint found the following cheapest return flights from Singapore (SIN) to Mexico City (MEX) in December 2025 (see full year).
Return flights
| 23 Dec - 30 Dec | Cathay Pacific | ||
| 01 Dec - 05 Dec | United | ||
| 09 Dec - 13 Dec | United | ||
| 19 Dec - 02 Jan | United | ||
| 11 Dec - 17 Dec | Emirates |
Also check the deals for one-way flights from Singapore to Mexico City in December.
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