Cheapest return flights from Phoenix to San Juan in December from $289

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

Return flights

04 Dec - 08 Dec Frontier Airlines
15 Dec - 20 Dec Southwest Airlines
22 Dec - 08 Jan Sun Country Airlines
23 Dec - 08 Jan Sun Country Airlines
22 Dec - 23 Dec Sun Country Airlines
20 Dec - 23 Dec Sun Country Airlines
20 Dec - 08 Jan Sun Country Airlines
22 Dec - 01 Jan Sun Country Airlines
23 Dec - 01 Jan Sun Country Airlines
22 Dec - 02 Jan Sun Country Airlines
27 Dec - 03 Jan Frontier Airlines
20 Dec - 02 Jan Frontier Airlines
23 Dec - 02 Jan Sun Country Airlines
20 Dec - 01 Jan Sun Country Airlines

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

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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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