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

Return flights

31 Dec - 11 Jan	Spirit Airlines
30 Dec - 21 Jan	United
31 Dec - 13 Jan	Spirit Airlines
30 Dec - 10 Jan	Frontier Airlines
30 Dec - 14 Jan	Spirit Airlines
30 Dec - 11 Jan	Frontier Airlines
31 Dec - 16 Jan	Spirit Airlines
31 Dec - 12 Jan	Spirit Airlines
31 Dec - 15 Jan	Spirit Airlines
31 Dec - 20 Jan	Spirit Airlines
27 Dec - 31 Dec	United
24 Dec - 26 Dec	United
23 Dec - 30 Dec	United
24 Dec - 31 Dec	United
29 Dec - 31 Dec	Spirit Airlines
30 Dec - 31 Dec	Spirit Airlines
26 Dec - 28 Dec	Spirit Airlines
28 Dec - 31 Dec	Spirit Airlines
28 Dec - 29 Dec	Spirit Airlines
23 Dec - 29 Dec	United

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 357€

Return flights