$637 Cheap Frontier Airlines flights Islip (ISP) to Milwaukee (MKE)

$637 Cheap Frontier Airlines flights Islip (ISP) to Milwaukee (MKE)

Prices were available within the past 7 days and start at $637 for one-way flights and $769 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Dec 28 - Wed, Jan 7

ISP

Islip

MKE

Milwaukee

$769 Roundtrip, found 22 hours ago

$769

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Sun, Dec 28 from Islip to Milwaukee, returning Wed, Jan 7, priced at $769 found 22 hours ago