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

Return flights

04 Aug - 07 Aug	Frontier Airlines	direct
05 Aug - 08 Aug	Frontier Airlines	direct
11 Aug - 15 Aug	Frontier Airlines	direct
18 Aug - 21 Aug	Delta
03 Aug - 08 Aug	Spirit Airlines
12 Aug - 23 Aug	Delta
06 Aug - 10 Aug	Frontier Airlines	direct
05 Aug - 09 Aug	Frontier Airlines	direct
30 Aug - 07 Sep	Spirit Airlines
17 Aug - 21 Aug	Frontier Airlines
04 Aug - 11 Aug	Frontier Airlines
30 Aug - 02 Sep	Spirit Airlines

Also check the deals for one-way flights from Cleveland 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 Cleveland to San Juan in August from $190

Return flights