Cheapest return NYC–SJO flights, September

AirHint found the following cheapest return flights from New York (NYC) to San Jose (SJO) in September 2026 (see full year).

Return flights

16 Sep - 22 Sep Arajet
16 Sep - 23 Sep Arajet
18 Sep - 26 Sep United
05 Sep - 13 Sep United direct
29 Sep - 09 Oct United direct
12 Sep - 22 Sep Copa
18 Sep - 21 Sep Copa
16 Sep - 20 Sep Avianca
05 Sep - 07 Sep Frontier Airlines
04 Sep - 08 Sep United
02 Sep - 06 Sep jetBlue

Also check the deals for one-way flights from New York to San Jose in September.

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