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

Return flights

11 Nov - 18 Nov	Frontier Airlines
11 Nov - 18 Nov	Frontier Airlines	direct
14 Nov - 17 Nov	Frontier Airlines
13 Nov - 17 Nov	Frontier Airlines
02 Nov - 13 Nov	Spirit Airlines	direct
16 Nov - 18 Nov	Spirit Airlines
02 Nov - 18 Nov	Spirit Airlines
13 Nov - 18 Nov	Spirit Airlines
08 Nov - 13 Nov	Spirit Airlines
11 Nov - 13 Nov	Spirit Airlines
29 Nov - 05 Dec	American Airlines	direct

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

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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Cheapest return flights from Philadelphia to San Juan in November from $195

Return flights