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 - 14 Dec	Avianca
29 Dec - 07 Jan	Avianca
04 Dec - 10 Dec	Delta
04 Dec - 07 Dec	Avianca
08 Dec - 17 Dec	Avianca
03 Dec - 09 Dec	Copa
05 Dec - 11 Dec	Frontier Airlines
03 Dec - 13 Dec	Copa
04 Dec - 11 Dec	Copa
03 Dec - 10 Dec	Copa
05 Dec - 12 Dec	Delta
31 Dec - 15 Jan	Avianca
29 Dec - 04 Jan	Avianca
21 Dec - 02 Jan	Avianca
24 Dec - 01 Jan	Frontier Airlines
26 Dec - 04 Jan	Copa
26 Dec - 02 Jan	Copa
19 Dec - 03 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.

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Cheapest return flights from New York to San Jose in December from 229€

Return flights