Cheapest return flights from Philadelphia to San Juan in October from $218

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

Return flights

29 Oct - 01 Nov Frontier Airlines direct
29 Oct - 05 Nov Frontier Airlines direct
29 Oct - 06 Nov Spirit Airlines
31 Oct - 02 Nov Frontier Airlines
28 Oct - 06 Nov Spirit Airlines
26 Oct - 06 Nov Spirit Airlines
30 Oct - 06 Nov Frontier Airlines
31 Oct - 04 Nov Frontier Airlines
29 Oct - 31 Oct Spirit Airlines
29 Oct - 13 Nov Spirit Airlines
30 Oct - 02 Nov Frontier Airlines
29 Oct - 30 Oct Spirit Airlines
26 Oct - 30 Oct Frontier Airlines
28 Oct - 30 Oct Spirit Airlines
30 Oct - 31 Oct Spirit Airlines
26 Oct - 30 Oct Frontier Airlines direct
28 Oct - 30 Oct Frontier Airlines direct
26 Oct - 27 Oct Spirit Airlines

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

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