Cheapest return flights from Trenton to San Juan in December from $283

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

Return flights

12 Dec - 14 Dec Frontier Airlines
06 Dec - 15 Dec Frontier Airlines
05 Dec - 08 Dec Frontier Airlines
12 Dec - 15 Dec Frontier Airlines
07 Dec - 14 Dec Frontier Airlines
06 Dec - 13 Dec Frontier Airlines
13 Dec - 20 Dec Frontier Airlines
18 Dec - 23 Dec Frontier Airlines
19 Dec - 27 Dec Frontier Airlines
22 Dec - 30 Dec Frontier Airlines
23 Dec - 04 Jan Frontier Airlines
20 Dec - 05 Jan Frontier Airlines
21 Dec - 02 Jan Frontier Airlines
26 Dec - 03 Jan Frontier Airlines
29 Dec - 05 Jan Frontier Airlines
22 Dec - 01 Jan Frontier Airlines
23 Dec - 02 Jan Frontier Airlines
19 Dec - 05 Jan Frontier Airlines
24 Dec - 03 Jan Frontier Airlines
25 Dec - 02 Jan Frontier Airlines

Also check the deals for one-way flights from Trenton 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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