AirHint found the following cheapest return flights from Mexico City (MEX) to Sydney (SYD) in September 2026 (see full year).
Return flights
| 20 Sep - 27 Sep | Aeromexico | ||
| 18 Sep - 24 Sep | Aeromexico | ||
| 24 Sep - 01 Oct | Aeromexico | ||
| 27 Sep - 04 Oct | Aeromexico | ||
| 07 Sep - 21 Sep | Aeromexico | ||
| 29 Sep - 12 Oct | Volaris |
Also check the deals for one-way flights from Mexico City to Sydney in September.
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