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

22 Oct - 26 Oct Frontier Airlines direct
06 Oct - 10 Oct Frontier Airlines
29 Oct - 01 Nov Frontier Airlines direct
16 Oct - 21 Oct Southwest Airlines
10 Oct - 12 Oct Southwest Airlines
17 Oct - 19 Oct Frontier Airlines direct
01 Oct - 05 Oct Delta
02 Oct - 05 Oct Delta
30 Oct - 04 Nov Frontier Airlines direct
03 Oct - 12 Oct Frontier Airlines direct
10 Oct - 20 Oct Frontier Airlines
02 Oct - 05 Oct Frontier Airlines direct
17 Oct - 01 Nov Spirit Airlines
29 Oct - 16 Nov Spirit Airlines
16 Oct - 01 Nov Spirit Airlines
19 Oct - 01 Nov Spirit Airlines
23 Oct - 01 Nov Spirit Airlines
17 Oct - 06 Nov Spirit Airlines
16 Oct - 06 Nov Spirit Airlines direct
19 Oct - 06 Nov Spirit Airlines direct

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

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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