$140 Cheap Frontier Airlines flights San Antonio (SAT) to Islip (ISP)

$140 Cheap Frontier Airlines flights San Antonio (SAT) to Islip (ISP)

Prices were available within the past 7 days and start at $140 for one-way flights and $331 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 16 - Sun, Jun 22

SAT

San Antonio

ISP

Islip

$331 Roundtrip, found 19 hours ago

$331

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Fri, May 16 from San Antonio to Islip, returning Sun, Jun 22, priced at $331 found 19 hours ago

Sun, May 18 - Sun, Jun 22

SAT

San Antonio

ISP

Islip

$351 Roundtrip, found 19 hours ago

$351

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Sun, May 18 from San Antonio to Islip, returning Sun, Jun 22, priced at $351 found 19 hours ago