AirHint found the following cheapest return flights from Melbourne (MEL) to Mexico City (MEX) in September 2025 (see full year).

Return flights

15 Sep - 15 Sep	Qantas
30 Sep - 28 Oct	Emirates
12 Sep - 19 Sep	Qatar Airways
23 Sep - 30 Sep	Qatar Airways
09 Sep - 31 Oct	Qantas
15 Sep - 17 Oct	Qantas
16 Sep - 17 Oct	Qantas
23 Sep - 07 Oct	Qatar Airways
15 Sep - 14 Oct	Emirates
29 Sep - 04 Oct	Qatar Airways
16 Sep - 16 Oct	Qatar Airways
15 Sep - 10 Oct	Emirates
19 Sep - 28 Sep	Qantas

Also check the deals for one-way flights from Melbourne to Mexico City in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Melbourne to Mexico City in September from $1703

Return flights