Cheapest return flights from Trenton to San Juan in August from $390

AirHint found the following cheapest return flights from Trenton (TTN) to San Juan (SJU) in August 2026 (see full year).

Return flights

18 Aug - 21 Aug Frontier Airlines
18 Aug - 26 Aug Frontier Airlines
13 Aug - 20 Aug Frontier Airlines
11 Aug - 18 Aug Frontier Airlines
12 Aug - 18 Aug Frontier Airlines
19 Aug - 27 Aug Frontier Airlines
13 Aug - 18 Aug Frontier Airlines
18 Aug - 22 Aug Frontier Airlines
01 Aug - 08 Aug Frontier Airlines
19 Aug - 22 Aug Frontier Airlines

Also check the deals for one-way flights from Trenton to San Juan in August.

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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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