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

Return flights

03 Aug - 07 Aug	Frontier Airlines
12 Aug - 27 Aug	Spirit Airlines
06 Aug - 27 Aug	Spirit Airlines
12 Aug - 15 Aug	Spirit Airlines
06 Aug - 15 Aug	Spirit Airlines
12 Aug - 31 Aug	Spirit Airlines
07 Aug - 27 Aug	Spirit Airlines
06 Aug - 07 Aug	Spirit Airlines
06 Aug - 12 Aug	Spirit Airlines
29 Aug - 01 Sep	Frontier Airlines
03 Aug - 15 Aug	Spirit Airlines
29 Aug - 07 Sep	Spirit Airlines
12 Aug - 02 Sep	Spirit Airlines
31 Aug - 02 Sep	Spirit Airlines
29 Aug - 02 Sep	Spirit Airlines

Also check the deals for one-way flights from Pittsburgh 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 Pittsburgh to San Juan in August from 236€

Return flights