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

Return flights

31 Aug - 14 Sep	United	direct
30 Aug - 13 Sep	United
17 Aug - 24 Aug	Avianca
11 Aug - 20 Aug	Avianca
21 Aug - 27 Aug	Avianca
20 Aug - 27 Aug	Avianca
27 Aug - 10 Sep	United
28 Aug - 11 Sep	United
15 Aug - 18 Aug	United
11 Aug - 15 Aug	Avianca
16 Aug - 20 Aug	Avianca
11 Aug - 17 Aug	Avianca
21 Aug - 24 Aug	Avianca
18 Aug - 24 Aug	Avianca
22 Aug - 05 Sep	United	direct
13 Aug - 13 Sep	United
26 Aug - 09 Sep	Avianca
31 Aug - 08 Sep	Avianca
26 Aug - 08 Sep	Avianca
20 Aug - 03 Sep	Spirit Airlines

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

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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Cheapest return flights from New York to San Jose in August from 214€

Return flights