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

Return flights

13 Aug - 18 Aug	Volaris	direct
13 Aug - 19 Aug	Volaris	direct
18 Aug - 25 Aug	Volaris	direct
26 Aug - 31 Aug	Volaris Costa Rica
13 Aug - 22 Aug	Volaris	direct
25 Aug - 29 Aug	Volaris	direct
27 Aug - 08 Sep	Volaris	direct
29 Aug - 31 Aug	Volaris
15 Aug - 24 Aug	Volaris
02 Aug - 05 Aug	Copa
27 Aug - 19 Sep	Volaris
30 Aug - 19 Sep	Copa
03 Aug - 08 Aug	Avianca
24 Aug - 07 Sep	Avianca

Also check the deals for one-way flights from Cancun to San Jose in August.

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 Cancun to San Jose in August from $158

Return flights