AirHint found the following cheapest return flights from West Palm Beach (PBI) to San Juan (SJU) in August 2025 (see full year).

Return flights

24 Aug - 31 Aug	Frontier Airlines
05 Aug - 09 Aug	Frontier Airlines
10 Aug - 14 Aug	Frontier Airlines
14 Aug - 19 Aug	Frontier Airlines
28 Aug - 02 Sep	Frontier Airlines
07 Aug - 10 Aug	Frontier Airlines
12 Aug - 17 Aug	Frontier Airlines
14 Aug - 18 Aug	Frontier Airlines
03 Aug - 11 Aug	Frontier Airlines
11 Aug - 14 Aug	Southwest Airlines

Also check the deals for one-way flights from West Palm Beach 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 West Palm Beach to San Juan in August from $198

Return flights