$33 Cheap Frontier Airlines flights Philadelphia (PHL) to Chicago (CHI)

$33 Cheap Frontier Airlines flights Philadelphia (PHL) to Chicago (CHI)

Prices were available within the past 7 days and start at $33 for one-way flights and $67 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 4 - Fri, Sep 5

PHL

Philadelphia

MDW

Chicago

$67 Roundtrip, found 8 hours ago

$67

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Thu, Sep 4 from Philadelphia to Chicago, returning Fri, Sep 5, priced at $67 found 8 hours ago

Sat, Oct 18 - Sat, Oct 25

PHL

Philadelphia

ORD

Chicago

$72 Roundtrip, found 9 hours ago

$72

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Sat, Oct 18 from Philadelphia to Chicago, returning Sat, Oct 25, priced at $72 found 9 hours ago

Sun, Aug 31 - Thu, Sep 4

PHL

Philadelphia

ORD

Chicago

$75 Roundtrip, found 6 hours ago

$75

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Sun, Aug 31 from Philadelphia to Chicago, returning Thu, Sep 4, priced at $75 found 6 hours ago

Fri, Oct 31 - Sun, Nov 2

PHL

Philadelphia

MDW

Chicago

$80 Roundtrip, found 11 hours ago

$80

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Fri, Oct 31 from Philadelphia to Chicago, returning Sun, Nov 2, priced at $80 found 11 hours ago

Thu, Sep 18 - Mon, Sep 22

PHL

Philadelphia

MDW

Chicago

$81 Roundtrip, just found

$81

Roundtrip

just found

Select Frontier Airlines flight, departing Thu, Sep 18 from Philadelphia to Chicago, returning Mon, Sep 22, priced at $81 just found

Sun, Aug 31 - Mon, Sep 8

PHL

Philadelphia

ORD

Chicago

$82 Roundtrip, found 7 hours ago

$82

Roundtrip

found 7 hours ago

Select Frontier Airlines flight, departing Sun, Aug 31 from Philadelphia to Chicago, returning Mon, Sep 8, priced at $82 found 7 hours ago