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

Return flights

07 Sep - 08 Sep	Viva
01 Sep - 08 Sep	Viva
07 Sep - 26 Sep	Viva
01 Sep - 05 Sep	Viva
08 Sep - 26 Sep	Viva
29 Sep - 04 Oct	Viva
29 Sep - 03 Oct	Viva
22 Sep - 04 Oct	Viva
22 Sep - 26 Sep	Viva
22 Sep - 03 Oct	Viva
29 Sep - 06 Oct	Viva
26 Sep - 03 Oct	Arajet
22 Sep - 06 Oct	Viva
24 Sep - 29 Sep	Arajet
07 Sep - 16 Sep	Viva
29 Sep - 17 Oct	Viva
01 Sep - 07 Sep	Viva
04 Sep - 12 Sep	Arajet
25 Sep - 01 Oct	Arajet
29 Sep - 11 Oct	Viva

Also check the deals for one-way flights from Mexico City to Miami 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 Mexico City to Miami in September from $218

Return flights