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

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

One-Way flights

11 Oct Frontier Airlines
04 Oct Frontier Airlines
03 Oct Frontier Airlines
05 Oct Frontier Airlines
06 Oct Frontier Airlines
17 Oct Frontier Airlines
20 Oct Frontier Airlines
26 Oct Frontier Airlines
10 Oct Frontier Airlines
02 Oct Frontier Airlines

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

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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