Cheapest one-way flights from Newark to San Juan in December from $99

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

One-Way flights

09 Dec Frontier Airlines
09 Dec Frontier Airlines direct
08 Dec United direct
06 Dec Frontier Airlines direct
07 Dec United direct
04 Dec Frontier Airlines
05 Dec Frontier Airlines
17 Dec Frontier Airlines
04 Dec Frontier Airlines direct
05 Dec Frontier Airlines direct

Also check the deals for return 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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