Cheapest return flights from Philadelphia to San Juan in August from $220

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

03 Aug - 07 Aug Frontier Airlines direct
05 Aug - 08 Aug Frontier Airlines direct
08 Aug - 14 Aug Frontier Airlines direct
03 Aug - 08 Aug Frontier Airlines direct
13 Aug - 18 Aug Frontier Airlines direct
03 Aug - 10 Aug Frontier Airlines direct
08 Aug - 11 Aug Frontier Airlines direct
02 Aug - 09 Aug Frontier Airlines direct
18 Aug - 21 Aug Frontier Airlines direct
01 Aug - 03 Aug Frontier Airlines direct
26 Aug - 03 Sep Spirit Airlines direct
30 Aug - 07 Sep Spirit Airlines direct
28 Aug - 02 Sep Spirit Airlines
30 Aug - 01 Sep Spirit Airlines direct
29 Aug - 01 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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan