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

Return flights

09 Dec - 16 Dec	Spirit Airlines
05 Dec - 12 Dec	Spirit Airlines
07 Dec - 11 Dec	Avianca
02 Dec - 08 Dec	Arajet
01 Dec - 06 Dec	Avianca
04 Dec - 09 Dec	Spirit Airlines
06 Dec - 09 Dec	Spirit Airlines
03 Dec - 09 Dec	Spirit Airlines
05 Dec - 09 Dec	Spirit Airlines
06 Dec - 08 Dec	Spirit Airlines
31 Dec - 07 Jan	Avianca
12 Dec - 12 Jan	Frontier Airlines
30 Dec - 20 Jan	Spirit Airlines
17 Dec - 06 Jan	Frontier Airlines
30 Dec - 16 Jan	Spirit Airlines
13 Dec - 03 Jan	Spirit Airlines
24 Dec - 13 Jan	Avianca
30 Dec - 14 Jan	Spirit Airlines
29 Dec - 04 Jan	Avianca
29 Dec - 16 Jan	Spirit Airlines

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 $241

Return flights