Cheapest return flights from Philadelphia to San Juan in October from $163

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

Return flights

02 Oct - 05 Oct Frontier Airlines direct
30 Oct - 01 Nov Frontier Airlines direct
08 Oct - 26 Oct Spirit Airlines
08 Oct - 12 Oct Spirit Airlines
08 Oct - 13 Oct Spirit Airlines
16 Oct - 26 Oct Frontier Airlines direct
16 Oct - 25 Oct Frontier Airlines direct
16 Oct - 19 Oct Frontier Airlines direct
05 Oct - 12 Oct Frontier Airlines direct
02 Oct - 16 Oct Frontier Airlines direct
02 Oct - 06 Oct Frontier Airlines direct
30 Oct - 03 Nov Frontier Airlines direct
30 Oct - 07 Nov Frontier Airlines direct
31 Oct - 06 Nov Frontier Airlines direct
31 Oct - 03 Nov Frontier Airlines direct
30 Oct - 04 Nov Frontier Airlines direct
19 Oct - 06 Nov Spirit Airlines direct
19 Oct - 02 Nov Spirit Airlines direct
16 Oct - 02 Nov Spirit Airlines direct
26 Oct - 06 Nov Spirit Airlines direct

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

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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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