Cheap Frontier Airlines flights Islip (ISP) to San Juan (SJU)

Cheap Frontier Airlines flights Islip (ISP) to San Juan (SJU)

Prices were available within the past 7 days and start at for one-way flights and $494 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Mar 8 - Thu, Mar 11

ISP

Islip

SJU

San Juan

$494 Roundtrip, found 17 hours ago

$494

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Mon, Mar 8 from Islip to San Juan, returning Thu, Mar 11, priced at $494 found 17 hours ago

Mon, Mar 8 - Mon, Mar 15

ISP

Islip

SJU

San Juan

$565 Roundtrip, found 17 hours ago

$565

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Mon, Mar 8 from Islip to San Juan, returning Mon, Mar 15, priced at $565 found 17 hours ago

Mon, Mar 8 - Fri, Mar 12

ISP

Islip

SJU

San Juan

$604 Roundtrip, found 17 hours ago

$604

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Mon, Mar 8 from Islip to San Juan, returning Fri, Mar 12, priced at $604 found 17 hours ago