Cheapest return flights from Portland to San Juan in December from $772

AirHint found the following cheapest return flights from Portland (PDX) to San Juan (SJU) in December 2025 (see full year).

Return flights

24 Dec - 31 Dec Frontier Airlines
16 Dec - 31 Dec American Airlines
15 Dec - 27 Dec American Airlines
27 Dec - 31 Dec Sun Country Airlines
30 Dec - 04 Jan Alaska Airlines
24 Dec - 27 Dec Sun Country Airlines

Also check the deals for one-way flights from Portland to San Juan in December.

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