AirHint found the following cheapest return flights from Guadalajara (GDL) to Sydney (SYD) in December 2025 (see full year).
Return flights
| 06 Dec - 05 Jan | Viva | ||
| 24 Dec - 07 Jan | Volaris | ||
| 17 Dec - 14 Jan | Aeromexico | ||
| 19 Dec - 02 Jan | Volaris | ||
| 19 Dec - 04 Jan | Volaris | ||
| 08 Dec - 15 Dec | Emirates | ||
| 13 Dec - 06 Jan | United | ||
| 13 Dec - 08 Jan | Delta |
Also check the deals for one-way flights from Guadalajara to Sydney in December.
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