Cheapest return flights from Phoenix (PHX) to San Jose (SJO), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
29 Sep 19 Oct American Airlines
30 Sep 19 Oct American Airlines
07 Sep 18 Sep American Airlines
14 Sep 21 Sep Frontier Airlines
10 Sep 15 Sep Southwest Airlines
24 Sep 28 Sep Frontier Airlines
03 Sep 06 Sep Volaris
20 Sep 26 Sep Southwest Airlines
16 Sep 22 Sep American Airlines
03 Sep 09 Sep Volaris
26 Sep 27 Sep American Airlines
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deals for one-way flights from Phoenix to San Jose in September.

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Updated Aug 26, 2026.

About these fares

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