$29 Cheap Frontier Airlines flights Philadelphia (PHL) to Chicago (CHI)

$29 Cheap Frontier Airlines flights Philadelphia (PHL) to Chicago (CHI)

Prices were available within the past 7 days and start at $29 for one-way flights and $58 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Jan 16 - Mon, Jan 19

PHL

Philadelphia

ORD

Chicago

$58 Roundtrip, just found

$58

Roundtrip

just found

Select Frontier Airlines flight, departing Fri, Jan 16 from Philadelphia to Chicago, returning Mon, Jan 19, priced at $58 just found

Tue, Jan 13 - Thu, Jan 15

PHL

Philadelphia

ORD

Chicago

$62 Roundtrip, just found

$62

Roundtrip

just found

Select Frontier Airlines flight, departing Tue, Jan 13 from Philadelphia to Chicago, returning Thu, Jan 15, priced at $62 just found

Thu, Jan 8 - Thu, Jan 15

PHL

Philadelphia

ORD

Chicago

$66 Roundtrip, found 5 hours ago

$66

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Thu, Jan 8 from Philadelphia to Chicago, returning Thu, Jan 15, priced at $66 found 5 hours ago

Fri, Feb 20 - Mon, Feb 23

PHL

Philadelphia

ORD

Chicago

$71 Roundtrip, found 6 hours ago

$71

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Fri, Feb 20 from Philadelphia to Chicago, returning Mon, Feb 23, priced at $71 found 6 hours ago

Wed, Dec 31 - Thu, Jan 8

PHL

Philadelphia

ORD

Chicago

$72 Roundtrip, found 11 hours ago

$72

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Wed, Dec 31 from Philadelphia to Chicago, returning Thu, Jan 8, priced at $72 found 11 hours ago

Mon, Jan 19 - Fri, Jan 23

PHL

Philadelphia

ORD

Chicago

$83 Roundtrip, found 18 hours ago

$83

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Mon, Jan 19 from Philadelphia to Chicago, returning Fri, Jan 23, priced at $83 found 18 hours ago