AirHint found the following cheapest return flights from San Jose (SJO) to Cancun (CUN) in September 2025 (see full year).

Return flights

24 Sep - 30 Sep	Volaris	direct
29 Sep - 07 Oct	Volaris	direct
29 Sep - 08 Oct	Volaris	direct
25 Sep - 02 Oct	Volaris Costa Rica	direct
08 Sep - 11 Sep	Volaris
02 Sep - 09 Sep	Volaris	direct
01 Sep - 09 Sep	Volaris	direct
07 Sep - 10 Sep	Volaris Costa Rica	direct
05 Sep - 09 Sep	Volaris	direct
03 Sep - 07 Sep	Volaris
17 Sep - 29 Sep	Volaris	direct
02 Sep - 16 Sep	Volaris
14 Sep - 16 Sep	Copa
24 Sep - 02 Oct	Copa
17 Sep - 01 Oct	Copa

Also check the deals for one-way flights from San Jose to Cancun 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 Cancun in September from $206

Return flights