Cheapest return flights from Phoenix to San Juan in December from 217€

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

Return flights

10 Dec - 13 Dec Frontier Airlines
06 Dec - 14 Dec Frontier Airlines
05 Dec - 07 Dec Spirit Airlines
11 Dec - 16 Dec Frontier Airlines
13 Dec - 18 Dec Frontier Airlines
04 Dec - 10 Dec Spirit Airlines
18 Dec - 20 Dec Frontier Airlines
12 Dec - 19 Dec Frontier Airlines
11 Dec - 18 Dec Frontier Airlines
12 Dec - 14 Dec Frontier Airlines
28 Dec - 11 Jan Frontier Airlines
23 Dec - 19 Jan Frontier Airlines
21 Dec - 08 Jan Frontier Airlines

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

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