Cheapest one-way flights from Trenton to San Juan in July from $142

AirHint found the following cheapest one-way flights from Trenton (TTN) to San Juan (SJU) in July 2025 (see full year).

One-Way flights

20 Jul Frontier Airlines
28 Jul Frontier Airlines
13 Jul Frontier Airlines
11 Jul Frontier Airlines
10 Jul Frontier Airlines
19 Jul Frontier Airlines
14 Jul Frontier Airlines
16 Jul Frontier Airlines
23 Jul Frontier Airlines
25 Jul Frontier Airlines

Also check the deals for return flights from Trenton to San Juan in July.

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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