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

Return flights

09 Sep - 10 Sep	Viva Aerobus
09 Sep - 09 Sep	Viva Aerobus
03 Sep - 10 Sep	Viva Aerobus
03 Sep - 09 Sep	Viva Aerobus
02 Sep - 10 Sep	Viva Aerobus
02 Sep - 09 Sep	Viva Aerobus
29 Sep - 15 Oct	Viva Aerobus
30 Sep - 15 Oct	Viva Aerobus
02 Sep - 02 Oct	Viva Aerobus
08 Sep - 10 Sep	Viva Aerobus
08 Sep - 09 Sep	Viva Aerobus
01 Sep - 10 Sep	Viva Aerobus
01 Sep - 09 Sep	Viva Aerobus
28 Sep - 15 Oct	Viva Aerobus
26 Sep - 15 Oct	Viva Aerobus
29 Sep - 02 Oct	Viva Aerobus
30 Sep - 02 Oct	Viva Aerobus
23 Sep - 02 Oct	Viva Aerobus
24 Sep - 15 Oct	Viva Aerobus
24 Sep - 02 Oct	Viva Aerobus

Also check the deals for one-way flights from Los Angeles 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 Los Angeles to Mexico City in September from $238

Return flights