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

Return flights

23 Aug - 30 Aug	Volaris Costa Rica	direct
28 Aug - 30 Aug	Volaris Costa Rica	direct
25 Aug - 29 Aug	Volaris Costa Rica	direct
04 Aug - 17 Aug	Avianca
04 Aug - 08 Aug	Avianca
11 Aug - 15 Aug	Avianca
21 Aug - 24 Aug	Avianca
04 Aug - 17 Aug	Volaris Costa Rica	direct
20 Aug - 03 Sep	Avianca
20 Aug - 24 Aug	Avianca
11 Aug - 15 Aug	Volaris Costa Rica	direct
20 Aug - 03 Sep	Copa	direct
29 Aug - 01 Sep	Copa	direct
20 Aug - 02 Sep	Copa	direct
21 Aug - 02 Sep	Copa	direct

Also check the deals for one-way flights from Guatemala 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 Guatemala City to San Jose in August from $181

Return flights