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

Return flights

07 Dec - 12 Dec	Avianca
03 Dec - 10 Dec	Delta
05 Dec - 12 Dec	United	direct
04 Dec - 08 Dec	United	direct
10 Dec - 15 Dec	Copa
10 Dec - 20 Dec	Avianca
14 Dec - 18 Jan	jetBlue
07 Dec - 12 Dec	United	direct
26 Dec - 30 Dec	Avianca
29 Dec - 04 Jan	Avianca
29 Dec - 05 Jan	Avianca
28 Dec - 03 Jan	Avianca
26 Dec - 09 Jan	Copa
13 Dec - 03 Jan	jetBlue
29 Dec - 02 Jan	Avianca
28 Dec - 08 Jan	United
20 Dec - 04 Jan	Avianca
25 Dec - 11 Jan	Avianca
21 Dec - 28 Dec	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 288€

Return flights