Cheapest return flights from Phoenix to San Juan in September from 247€

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

Return flights

13 Sep - 21 Sep Frontier Airlines
08 Sep - 11 Sep Spirit Airlines
18 Sep - 23 Sep Spirit Airlines
23 Sep - 27 Sep Frontier Airlines
11 Sep - 17 Sep Frontier Airlines
17 Sep - 23 Sep Frontier Airlines
12 Sep - 15 Sep Spirit Airlines
04 Sep - 08 Sep Spirit Airlines
11 Sep - 15 Sep Frontier Airlines
09 Sep - 15 Sep Frontier Airlines

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

Skyscanner

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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan

Feel free to contact us with any feedback or request another flight research.