Cheapest return flights from Trenton to San Juan in June from $380

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

Return flights

01 Jun - 06 Jun Frontier Airlines
02 Jun - 09 Jun Frontier Airlines
30 Jun - 21 Jul Frontier Airlines
02 Jun - 05 Jun Frontier Airlines
18 Jun - 24 Jun Allegiant Air
04 Jun - 07 Jun Frontier Airlines
05 Jun - 08 Jun Frontier Airlines
10 Jun - 17 Jun Frontier Airlines
08 Jun - 19 Jun Frontier Airlines
27 Jun - 01 Jul Frontier Airlines
20 Jun - 30 Jun Frontier Airlines
30 Jun - 04 Jul Frontier Airlines
05 Jun - 14 Jun Frontier Airlines
26 Jun - 01 Jul Frontier Airlines
30 Jun - 05 Jul Frontier Airlines
26 Jun - 06 Jul Frontier Airlines
27 Jun - 03 Jul Frontier Airlines
25 Jun - 02 Jul Frontier Airlines
19 Jun - 03 Jul Frontier Airlines

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

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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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