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

Return flights

22 Aug - 25 Aug	Avianca
19 Aug - 24 Aug	Avianca
03 Aug - 06 Aug	Spirit Airlines
04 Aug - 06 Aug	Spirit Airlines
11 Aug - 30 Aug	Copa
03 Aug - 09 Aug	Spirit Airlines
04 Aug - 09 Aug	Spirit Airlines
03 Aug - 05 Aug	Spirit Airlines
04 Aug - 05 Aug	Spirit Airlines
03 Aug - 11 Aug	Spirit Airlines
22 Aug - 11 Sep	Spirit Airlines
25 Aug - 11 Sep	Spirit Airlines
22 Aug - 06 Sep	Spirit Airlines
22 Aug - 04 Sep	Spirit Airlines
22 Aug - 10 Sep	Spirit Airlines
16 Aug - 06 Sep	Spirit Airlines
16 Aug - 04 Sep	Spirit Airlines
25 Aug - 06 Sep	Spirit Airlines
25 Aug - 13 Sep	Spirit Airlines
25 Aug - 04 Sep	Spirit Airlines

Also check the deals for one-way flights from Guatemala City to San Juan 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 Juan in August from $263

Return flights