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Cheapest one-way flights from Islip (ISP) to San Juan (SJU), April

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Dates, airline, and price
Dates	Airline	Price
08 Apr	Cape Air

deals for return flights from Islip to San Juan in April.

Book a cheap hotel in San Juan

Cheap car rent in Luis Munoz Marin Intl

Updated Jul 18, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from Islip (ISP) to San Juan (SJU), April

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