Cheapest return flights from Phoenix to San Juan in December from $281

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

Return flights

06 Dec - 14 Dec Frontier Airlines
05 Dec - 12 Dec Frontier Airlines
04 Dec - 12 Dec Frontier Airlines
03 Dec - 09 Dec Frontier Airlines
04 Dec - 09 Dec Southwest Airlines
21 Dec - 08 Jan Frontier Airlines
19 Dec - 28 Dec Frontier Airlines
18 Dec - 27 Dec Frontier Airlines
24 Dec - 08 Jan Sun Country Airlines
28 Dec - 08 Jan Sun Country Airlines
22 Dec - 08 Jan Sun Country Airlines
28 Dec - 03 Jan Frontier Airlines
19 Dec - 08 Jan Sun Country Airlines
25 Dec - 08 Jan Sun Country Airlines
18 Dec - 08 Jan Sun Country Airlines
24 Dec - 27 Dec Sun Country Airlines
22 Dec - 28 Dec Sun Country Airlines
21 Dec - 28 Dec Sun Country Airlines

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

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