Cheapest return flights from Newark to San Juan in December from $187

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

Return flights

09 Dec - 17 Dec Frontier Airlines direct
03 Dec - 10 Dec Frontier Airlines
10 Dec - 16 Dec Frontier Airlines
03 Dec - 09 Dec Frontier Airlines
09 Dec - 13 Dec Frontier Airlines direct
08 Dec - 13 Dec United direct
03 Dec - 08 Dec Frontier Airlines
07 Dec - 12 Dec United direct
07 Dec - 12 Dec Frontier Airlines
05 Dec - 10 Dec Frontier Airlines
31 Dec - 16 Jan Spirit Airlines
31 Dec - 21 Jan Spirit Airlines
31 Dec - 15 Jan Spirit Airlines
31 Dec - 17 Jan Spirit Airlines
31 Dec - 06 Jan American Airlines
31 Dec - 14 Jan Spirit Airlines
30 Dec - 16 Jan Spirit Airlines
30 Dec - 15 Jan Spirit Airlines
30 Dec - 17 Jan Spirit Airlines
30 Dec - 11 Jan jetBlue direct

Also check the deals for one-way flights from Newark to San Juan in December.

Skyscanner

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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