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

Return flights

21 Aug - 25 Aug	Copa
14 Aug - 18 Aug	Copa
18 Aug - 22 Aug	Avianca
06 Aug - 08 Aug	Avianca
25 Aug - 05 Sep	Avianca
26 Aug - 31 Aug	Copa
07 Aug - 11 Aug	Avianca
04 Aug - 11 Aug	Avianca
15 Aug - 21 Aug	Avianca	direct
29 Aug - 01 Sep	Avianca
01 Aug - 04 Aug	Avianca
03 Aug - 10 Aug	Avianca
29 Aug - 08 Sep	Spirit Airlines
29 Aug - 15 Sep	Spirit Airlines
29 Aug - 13 Sep	Spirit Airlines
29 Aug - 06 Sep	Spirit Airlines
29 Aug - 04 Sep	Spirit Airlines
15 Aug - 04 Sep	Spirit Airlines
29 Aug - 05 Sep	Spirit Airlines
21 Aug - 08 Sep	Spirit Airlines

Also check the deals for one-way flights from San Juan 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 San Juan to San Jose in August from 184€

Return flights