$121 Cheap Frontier Airlines flights Portland (PDX) to Chicago (ORD)

$121 Cheap Frontier Airlines flights Portland (PDX) to Chicago (ORD)

Prices were available within the past 7 days and start at $121 for one-way flights and $207 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, May 11 - Mon, Jun 9

PDX

Portland

ORD

Chicago

$207 Roundtrip, found 1 day ago

$207

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, May 11 from Portland to Chicago, returning Mon, Jun 9, priced at $207 found 1 day ago

Fri, Aug 8 - Wed, Aug 13

PDX

Portland

ORD

Chicago

$321 Roundtrip, found 17 hours ago

$321

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Portland to Chicago, returning Wed, Aug 13, priced at $321 found 17 hours ago