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

Return flights

07 Dec - 15 Dec	Delta	direct
02 Dec - 08 Dec	Delta	direct
04 Dec - 09 Dec	jetBlue	direct
12 Dec - 20 Dec	jetBlue	direct
17 Dec - 22 Dec	jetBlue	direct
24 Dec - 29 Dec	Delta	direct
13 Dec - 14 Dec	jetBlue
01 Dec - 11 Jan	jetBlue
25 Dec - 29 Dec	Delta	direct
01 Dec - 11 Jan	Delta	direct
28 Dec - 01 Jan	jetBlue	direct
29 Dec - 01 Jan	jetBlue	direct
18 Dec - 27 Dec	jetBlue	direct
24 Dec - 30 Dec	Delta	direct
27 Dec - 01 Jan	jetBlue
29 Dec - 02 Jan	jetBlue	direct
26 Dec - 01 Jan	jetBlue
29 Dec - 04 Jan	jetBlue
30 Dec - 03 Jan	jetBlue	direct
28 Dec - 03 Jan	jetBlue	direct

Also check the deals for one-way 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 return flights from New York to San Juan in December from $225

Return flights