Cheapest return flights from Newark to San Juan in December from $135

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

Return flights

06 Dec - 13 Dec Frontier Airlines direct
10 Dec - 17 Dec Frontier Airlines
09 Dec - 13 Dec Frontier Airlines
11 Dec - 17 Dec Frontier Airlines direct
11 Dec - 13 Dec Frontier Airlines direct
12 Dec - 16 Dec Frontier Airlines direct
05 Dec - 10 Dec Frontier Airlines direct
11 Dec - 16 Dec Frontier Airlines direct
13 Dec - 20 Dec Frontier Airlines direct
11 Dec - 21 Dec Frontier Airlines direct
13 Dec - 02 Jan jetBlue direct
31 Dec - 09 Jan Frontier Airlines direct
30 Dec - 13 Jan Frontier Airlines
30 Dec - 17 Jan Spirit Airlines
31 Dec - 17 Jan Spirit Airlines
31 Dec - 10 Jan Spirit Airlines
31 Dec - 20 Jan Spirit Airlines
31 Dec - 13 Jan Spirit Airlines
31 Dec - 14 Jan Spirit Airlines
30 Dec - 17 Jan jetBlue direct

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

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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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