Cheapest return flights from San Diego to San Juan in August from 356€

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

Return flights

27 Aug - 31 Aug Frontier Airlines
28 Aug - 31 Aug Spirit Airlines
23 Aug - 29 Aug Frontier Airlines
20 Aug - 27 Aug Frontier Airlines
28 Aug - 30 Aug Spirit Airlines
21 Aug - 25 Aug Frontier Airlines
30 Aug - 02 Sep Spirit Airlines
28 Aug - 02 Sep Frontier Airlines
30 Aug - 03 Sep Spirit Airlines
23 Aug - 26 Aug Frontier Airlines
30 Aug - 07 Sep Spirit Airlines
27 Aug - 02 Sep Frontier Airlines
29 Aug - 01 Sep Spirit Airlines
19 Aug - 26 Aug United
17 Aug - 31 Aug Spirit Airlines

Also check the deals for one-way flights from San Diego to San Juan in August.

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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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