Cheapest return flights from Philadelphia to San Juan in August from $192

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

Return flights

23 Aug - 26 Aug Frontier Airlines
16 Aug - 23 Aug Frontier Airlines
19 Aug - 26 Aug Frontier Airlines
09 Aug - 16 Aug Frontier Airlines
16 Aug - 30 Aug Frontier Airlines
17 Aug - 29 Aug Frontier Airlines direct
17 Aug - 22 Aug Frontier Airlines direct
21 Aug - 28 Aug Frontier Airlines
20 Aug - 27 Aug Frontier Airlines
22 Aug - 06 Sep Spirit Airlines
27 Aug - 03 Sep Frontier Airlines
31 Aug - 05 Sep Frontier Airlines direct
24 Aug - 29 Aug Spirit Airlines direct
22 Aug - 03 Sep Spirit Airlines direct
22 Aug - 11 Sep Spirit Airlines direct
22 Aug - 04 Sep Spirit Airlines direct
25 Aug - 03 Sep Spirit Airlines direct
25 Aug - 11 Sep Spirit Airlines direct
25 Aug - 04 Sep Spirit Airlines direct
24 Aug - 03 Sep Spirit Airlines direct

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

Skyscanner

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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