Cheapest return flights from Phoenix to San Juan in January from 348€

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

Return flights

23 Jan - 01 Feb Spirit Airlines
17 Jan - 27 Jan Southwest Airlines
14 Jan - 19 Jan Southwest Airlines
24 Jan - 01 Feb Frontier Airlines
16 Jan - 19 Jan Southwest Airlines
15 Jan - 19 Jan Southwest Airlines
16 Jan - 20 Jan Southwest Airlines
30 Jan - 02 Feb Spirit Airlines
14 Jan - 18 Jan United
03 Jan - 11 Jan Southwest Airlines
03 Jan - 12 Jan Southwest Airlines

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

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