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

Return flights

20 Aug - 27 Aug	Avianca
23 Aug - 27 Aug	Avianca
11 Aug - 20 Aug	Avianca
11 Aug - 27 Aug	Avianca
20 Aug - 05 Sep	American Airlines
18 Aug - 24 Aug	Avianca
22 Aug - 27 Aug	Avianca
21 Aug - 03 Sep	Avianca
23 Aug - 03 Sep	Avianca
23 Aug - 05 Sep	Avianca
27 Aug - 09 Sep	Avianca
19 Aug - 27 Sep	Avianca
20 Aug - 24 Aug	Avianca
20 Aug - 10 Sep	Avianca
28 Aug - 08 Sep	Avianca
21 Aug - 25 Aug	Avianca
13 Aug - 20 Aug	Frontier Airlines
28 Aug - 04 Sep	Avianca
30 Aug - 04 Sep	Avianca
17 Aug - 24 Aug	Avianca

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 198€

Return flights