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

Return flights

05 Aug - 27 Aug	Avianca	direct
19 Aug - 23 Aug	Avianca
27 Aug - 03 Sep	Avianca
11 Aug - 18 Aug	Avianca
25 Aug - 30 Aug	Avianca
23 Aug - 30 Aug	Avianca	direct
01 Aug - 04 Aug	Avianca	direct
13 Aug - 17 Aug	Avianca
12 Aug - 22 Aug	Avianca
16 Aug - 23 Aug	Avianca	direct
19 Aug - 28 Aug	Avianca
27 Aug - 03 Sep	Aeromexico	direct
28 Aug - 04 Sep	Aeromexico	direct
23 Aug - 30 Sep	Aeromexico	direct
31 Aug - 06 Sep	Avianca
29 Aug - 19 Sep	Copa

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 $246

Return flights