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

Return flights

08 Dec - 12 Dec	Avianca
04 Dec - 10 Dec	Avianca
04 Dec - 11 Dec	Avianca
04 Dec - 07 Dec	Avianca
08 Dec - 15 Dec	Avianca
06 Dec - 09 Dec	Avianca
09 Dec - 16 Dec	American Airlines
11 Dec - 15 Dec	American Airlines
11 Dec - 14 Dec	American Airlines
09 Dec - 16 Dec	jetBlue	direct
31 Dec - 17 Jan	jetBlue
31 Dec - 12 Jan	Frontier Airlines
31 Dec - 07 Jan	jetBlue
03 Dec - 16 Jan	Avianca
13 Dec - 09 Jan	Frontier Airlines
17 Dec - 12 Jan	Frontier Airlines
14 Dec - 09 Jan	jetBlue
16 Dec - 22 Jan	jetBlue
30 Dec - 12 Jan	jetBlue
27 Dec - 12 Jan	Avianca

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

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 December from $234

Return flights