Cheapest return flights from Philadelphia to San Juan in September from 296€

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 September 2025 (see full year).

Return flights

07 Sep - 29 Sep United
08 Sep - 27 Sep Delta
08 Sep - 28 Sep United
27 Sep - 04 Oct American Airlines
19 Sep - 25 Sep Delta
05 Sep - 27 Sep Delta
11 Sep - 15 Sep Southwest Airlines
11 Sep - 14 Sep Southwest Airlines
12 Sep - 15 Sep Southwest Airlines

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

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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