AirHint found the following cheapest one-way flights from New York (JFK) to San Juan (SJU) in December 2025 (see full year).

One-Way flights

09 Dec	jetBlue	direct
29 Dec	Delta	direct
28 Dec	jetBlue	direct
27 Dec	Delta	direct
18 Dec	jetBlue	direct
23 Dec	Delta	direct
26 Dec	Delta	direct
19 Dec	Frontier Airlines	direct
25 Dec	Delta	direct
20 Dec	Delta	direct

Also check the deals for return flights from New York to San Juan 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 one-way flights from New York to San Juan in December from 98€

One-Way flights