Cheapest return flights from Phoenix to San Juan in January from 209€

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

Return flights

17 Jan - 27 Jan Frontier Airlines
22 Jan - 26 Jan Frontier Airlines
26 Jan - 29 Jan Frontier Airlines
08 Jan - 13 Jan Frontier Airlines
16 Jan - 26 Jan Frontier Airlines
24 Jan - 01 Feb Frontier Airlines
16 Jan - 25 Jan Frontier Airlines
12 Jan - 19 Jan Frontier Airlines
23 Jan - 01 Feb Frontier Airlines
31 Jan - 08 Feb United

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

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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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