Cheapest one-way flights from Newark to San Juan in September from $65

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

One-Way flights

01 Sep Frontier Airlines direct
08 Sep Frontier Airlines direct
30 Sep Frontier Airlines direct
21 Sep Frontier Airlines direct
22 Sep Frontier Airlines direct
23 Sep Frontier Airlines direct
24 Sep Frontier Airlines direct
29 Sep Frontier Airlines direct
28 Sep Frontier Airlines direct
07 Sep Frontier Airlines direct

Also check the deals for return flights from Newark to San Juan in September.

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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