$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.

Sun, Jan 18 - Mon, Jan 19

PHL

Philadelphia

ORD

Chicago

$58 Roundtrip, just found

$58

Roundtrip

just found

Select Frontier Airlines flight, departing Sun, Jan 18 from Philadelphia to Chicago, returning Mon, Jan 19, priced at $58 just found

Thu, Jan 15 - Mon, Jan 19

PHL

Philadelphia

ORD

Chicago

$62 Roundtrip, found 3 hours ago

$62

Roundtrip

found 3 hours ago

Select Frontier Airlines flight, departing Thu, Jan 15 from Philadelphia to Chicago, returning Mon, Jan 19, priced at $62 found 3 hours ago

Thu, Jan 8 - Thu, Jan 15

PHL

Philadelphia

ORD

Chicago

$66 Roundtrip, found 2 hours ago

$66

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Thu, Jan 8 from Philadelphia to Chicago, returning Thu, Jan 15, priced at $66 found 2 hours ago

Fri, Feb 6 - Mon, Feb 9

PHL

Philadelphia

ORD

Chicago

$68 Roundtrip, just found

$68

Roundtrip

just found

Select Frontier Airlines flight, departing Fri, Feb 6 from Philadelphia to Chicago, returning Mon, Feb 9, priced at $68 just found

Fri, Feb 20 - Mon, Feb 23

PHL

Philadelphia

ORD

Chicago

$71 Roundtrip, found 3 hours ago

$71

Roundtrip

found 3 hours ago

Select Frontier Airlines flight, departing Fri, Feb 20 from Philadelphia to Chicago, returning Mon, Feb 23, priced at $71 found 3 hours ago

Wed, Dec 31 - Thu, Jan 8

PHL

Philadelphia

ORD

Chicago

$72 Roundtrip, found 8 hours ago

$72

Roundtrip

found 8 hours ago

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