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

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

Return flights

17 Jul - 27 Jul Frontier Airlines
19 Jul - 22 Jul Frontier Airlines
17 Jul - 22 Jul Frontier Airlines
18 Jul - 22 Jul Frontier Airlines
11 Jul - 16 Jul Frontier Airlines
27 Jul - 31 Jul Frontier Airlines
10 Jul - 16 Jul Frontier Airlines
26 Jul - 28 Jul Frontier Airlines
09 Jul - 16 Jul Frontier Airlines
20 Jul - 24 Jul Frontier Airlines
29 Jul - 02 Aug Frontier Airlines
30 Jul - 03 Aug Frontier Airlines
28 Jul - 01 Aug Frontier Airlines
09 Jul - 03 Aug Frontier Airlines
19 Jul - 01 Aug Frontier Airlines
18 Jul - 03 Aug Frontier Airlines
24 Jul - 07 Aug Frontier Airlines
18 Jul - 01 Aug Frontier Airlines
25 Jul - 07 Aug Frontier Airlines
28 Jul - 04 Aug Frontier Airlines

Also check the deals for one-way 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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