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

Return flights

26 Sep - 15 Oct	Viva
26 Sep - 02 Oct	Viva
26 Sep - 29 Sep	Viva
28 Sep - 15 Oct	Viva
28 Sep - 02 Oct	Viva
28 Sep - 29 Sep	Viva
26 Sep - 03 Oct	Viva
28 Sep - 18 Oct	Viva
26 Sep - 06 Oct	Viva
26 Sep - 27 Sep	Viva
28 Sep - 03 Oct	Viva
26 Sep - 13 Oct	Viva
28 Sep - 06 Oct	Viva
27 Sep - 27 Sep	Viva
25 Sep - 29 Sep	Volaris
25 Sep - 29 Sep	Volaris	direct

Also check the deals for one-way flights from Oakland 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 Oakland to Mexico City in September from 189€

Return flights