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

Return flights

08 Sep - 15 Sep	Volaris
05 Sep - 07 Sep	Volaris
23 Sep - 26 Sep	Volaris
30 Sep - 07 Oct	Volaris
22 Sep - 29 Sep	Volaris
02 Sep - 10 Sep	Volaris
04 Sep - 08 Sep	Spirit Airlines
12 Sep - 14 Sep	Volaris
02 Sep - 16 Sep	United
03 Sep - 17 Sep	United
11 Sep - 25 Sep	United
17 Sep - 01 Oct	United
18 Sep - 02 Oct	United
23 Sep - 07 Oct	United
24 Sep - 08 Oct	United
30 Sep - 14 Oct	United
22 Sep - 06 Oct	United
28 Sep - 12 Oct	United
25 Sep - 09 Oct	United
19 Sep - 03 Oct	United

Also check the deals for one-way flights from San Jose 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 San Jose to Mexico City in September from $332

Return flights