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

Return flights

21 Aug - 27 Aug	Volaris Costa Rica	direct
09 Aug - 13 Aug	Avianca	direct
09 Aug - 19 Aug	Avianca	direct
05 Aug - 12 Aug	Avianca	direct
15 Aug - 17 Aug	Avianca
20 Aug - 25 Aug	Avianca	direct
19 Aug - 26 Aug	Avianca	direct
21 Aug - 31 Aug	Avianca	direct
21 Aug - 24 Aug	Avianca	direct
22 Aug - 31 Aug	Avianca
28 Aug - 02 Sep	Avianca
29 Aug - 08 Sep	Avianca	direct
25 Aug - 02 Sep	Avianca
27 Aug - 03 Sep	Avianca
19 Aug - 30 Sep	Avianca	direct
30 Aug - 05 Sep	Avianca	direct
28 Aug - 02 Sep	Volaris Costa Rica	direct
27 Aug - 05 Sep	Avianca

Also check the deals for one-way flights from Mexico City 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 Mexico City to San Jose in August from 203€

Return flights