Cheapest return flights from Phoenix to San Juan in January from $299

AirHint found the following cheapest return flights from Phoenix (PHX) to San Juan (SJU) in January 2026 (see full year).

Return flights

23 Jan - 30 Jan Frontier Airlines
08 Jan - 12 Jan Frontier Airlines
05 Jan - 12 Jan Frontier Airlines
24 Jan - 01 Feb Frontier Airlines
23 Jan - 01 Feb Frontier Airlines
08 Jan - 16 Jan Frontier Airlines
17 Jan - 27 Jan Southwest Airlines
14 Jan - 21 Jan Frontier Airlines
16 Jan - 26 Jan Frontier Airlines
13 Jan - 20 Jan Frontier Airlines
16 Jan - 20 Jan American Airlines
14 Jan - 20 Jan American Airlines
17 Jan - 01 Feb Sun Country Airlines
16 Jan - 01 Feb Sun Country Airlines
15 Jan - 01 Feb Sun Country Airlines

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

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