Cheapest return flights from Phoenix to San Juan in May from 171€

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

Return flights

01 May - 09 May Frontier Airlines
07 May - 12 May Frontier Airlines
06 May - 13 May Frontier Airlines
11 May - 16 May Frontier Airlines
17 May - 22 May Southwest Airlines
23 May - 30 May United
26 May - 02 Jun United
18 May - 25 May Frontier Airlines
19 May - 25 May Frontier Airlines
28 May - 31 May Frontier Airlines
21 May - 25 May Southwest Airlines

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

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