Cheapest return flights from New York to San Jose in September from $283

Best time to book flights for New York (NYC) to San Jose (SJO) flights at AirHint

AirHint found the following cheapest return flights from New York (NYC) to San Jose (SJO) in September 2025 (see full year).

Return flights

03 Sep - 17 Sep United direct
04 Sep - 18 Sep United direct
10 Sep - 24 Sep United direct
10 Sep - 14 Sep jetBlue direct
22 Sep - 26 Sep United direct
19 Sep - 03 Oct United direct
12 Sep - 24 Sep United
18 Sep - 02 Oct United
16 Sep - 30 Sep United direct
17 Sep - 01 Oct United direct
02 Sep - 16 Sep United
09 Sep - 23 Sep United
17 Sep - 21 Sep Avianca
30 Sep - 08 Oct Delta
28 Sep - 04 Oct Avianca
21 Sep - 05 Oct United direct
20 Sep - 04 Oct United

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

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