$39 Cheap Frontier Airlines flights Philadelphia (PHL) to Chicago (CHI)

$39 Cheap Frontier Airlines flights Philadelphia (PHL) to Chicago (CHI)

Prices were available within the past 7 days and start at $39 for one-way flights and $78 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Oct 18 - Sat, Oct 25

PHL

Philadelphia

ORD

Chicago

$78 Roundtrip, found 2 hours ago

$78

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Sat, Oct 18 from Philadelphia to Chicago, returning Sat, Oct 25, priced at $78 found 2 hours ago

Sat, Oct 25 - Fri, Oct 31

PHL

Philadelphia

ORD

Chicago

$82 Roundtrip, found 6 hours ago

$82

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Sat, Oct 25 from Philadelphia to Chicago, returning Fri, Oct 31, priced at $82 found 6 hours ago

Mon, Nov 10 - Thu, Nov 13

PHL

Philadelphia

MDW

Chicago

$84 Roundtrip, just found

$84

Roundtrip

just found

Select Frontier Airlines flight, departing Mon, Nov 10 from Philadelphia to Chicago, returning Thu, Nov 13, priced at $84 just found

Sat, Oct 25 - Mon, Nov 3

PHL

Philadelphia

ORD

Chicago

$86 Roundtrip, found 23 hours ago

$86

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Sat, Oct 25 from Philadelphia to Chicago, returning Mon, Nov 3, priced at $86 found 23 hours ago

Sat, Oct 18 - Mon, Oct 20

PHL

Philadelphia

ORD

Chicago

$88 Roundtrip, just found

$88

Roundtrip

just found

Select Frontier Airlines flight, departing Sat, Oct 18 from Philadelphia to Chicago, returning Mon, Oct 20, priced at $88 just found

Thu, Nov 13 - Mon, Nov 17

PHL

Philadelphia

MDW

Chicago

$89 Roundtrip, found 1 hour ago

$89

Roundtrip

found 1 hour ago

Select Frontier Airlines flight, departing Thu, Nov 13 from Philadelphia to Chicago, returning Mon, Nov 17, priced at $89 found 1 hour ago