AirHint found the following cheapest return flights from San Jose (SJO) to Mexico City (MEX) in September 2026 (see full year).

Return flights

26 Sep - 28 Sep	Viva
08 Sep - 28 Sep	Viva
19 Sep - 28 Sep	Viva
12 Sep - 28 Sep	Viva
15 Sep - 28 Sep	Viva
13 Sep - 17 Sep	Volaris Costa Rica	direct
12 Sep - 16 Sep	Volaris Costa Rica	direct
12 Sep - 17 Sep	Volaris Costa Rica	direct
18 Sep - 27 Sep	Volaris Costa Rica	direct
26 Sep - 08 Oct	Viva
19 Sep - 08 Oct	Viva
08 Sep - 18 Sep	Viva
26 Sep - 01 Oct	Viva
26 Sep - 02 Oct	Viva
19 Sep - 01 Oct	Viva
19 Sep - 02 Oct	Viva
12 Sep - 01 Oct	Viva
12 Sep - 02 Oct	Viva
26 Sep - 05 Oct	Viva
19 Sep - 05 Oct	Viva

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 $184

Return flights