AirHint found the following cheapest return flights from Guadalajara (GDL) to Singapore (SIN) in December 2025 (see full year).
Return flights
| 21 Dec - 12 Jan | Flair Airlines | ||
| 13 Dec - 20 Dec | Flair Airlines | ||
| 22 Dec - 02 Jan | Flair Airlines |
Also check the deals for one-way flights from Guadalajara to Singapore in December.
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