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

Return flights

17 Aug - 24 Aug	Spirit Airlines
31 Aug - 07 Sep	American Airlines
20 Aug - 26 Aug	Spirit Airlines
01 Aug - 15 Aug	Spirit Airlines
15 Aug - 24 Aug	Spirit Airlines
20 Aug - 30 Aug	Spirit Airlines
01 Aug - 04 Aug	Spirit Airlines
02 Aug - 04 Aug	Spirit Airlines
01 Aug - 10 Aug	Spirit Airlines
02 Aug - 10 Aug	Spirit Airlines
28 Aug - 02 Sep	Spirit Airlines

Also check the deals for one-way flights from Sacramento 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 Sacramento to San Juan in August from $437

Return flights