Cheap Frontier Airlines flights Seattle (SEA) to Chicago (MDW)

Cheap Frontier Airlines flights Seattle (SEA) to Chicago (MDW)

Prices were available within the past 7 days and start at for one-way flights and $427 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Aug 17 - Fri, Aug 22

SEA

Seattle

MDW

Chicago

$427 Roundtrip, found 3 days ago

$427

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sun, Aug 17 from Seattle to Chicago, returning Fri, Aug 22, priced at $427 found 3 days ago