AirHint found the following cheapest return flights from Greenville (GSP) to Mexico City (MEX) in December 2025 (see full year).
Return flights
| 15 Dec - 06 Jan | Breeze Airways | ||
| 15 Dec - 04 Jan | Allegiant Air | ||
| 19 Dec - 02 Jan | Allegiant Air | ||
| 19 Dec - 05 Jan | Allegiant Air | ||
| 17 Dec - 07 Jan | American Airlines | ||
| 20 Dec - 05 Jan | Allegiant Air |
Also check the deals for one-way flights from Greenville to Mexico City in December.
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