Cheapest return flights from Philadelphia to San Juan in August from $235

Best time to book flights for Philadelphia (PHL) to San Juan (SJU) flights at AirHint

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

Return flights

12 Aug - 18 Aug Frontier Airlines
11 Aug - 15 Aug Frontier Airlines direct
05 Aug - 09 Aug Frontier Airlines direct
05 Aug - 12 Aug Frontier Airlines direct
11 Aug - 18 Aug Frontier Airlines
04 Aug - 11 Aug Frontier Airlines direct
14 Aug - 18 Aug Frontier Airlines
08 Aug - 13 Aug Spirit Airlines direct
10 Aug - 18 Aug Frontier Airlines
31 Aug - 30 Sep American Airlines
24 Aug - 26 Sep American Airlines
19 Aug - 05 Sep American Airlines
13 Aug - 20 Aug American Airlines
30 Aug - 02 Sep jetBlue
31 Aug - 07 Sep American Airlines
29 Aug - 01 Sep American Airlines

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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