Cheapest return flights from Trenton to San Juan in October from $284

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

Return flights

11 Oct - 18 Oct Frontier Airlines
20 Oct - 27 Oct Frontier Airlines
03 Oct - 06 Oct Frontier Airlines
17 Oct - 27 Oct Frontier Airlines
06 Oct - 13 Oct Frontier Airlines
17 Oct - 19 Oct Frontier Airlines

Also check the deals for one-way 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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