Flights from Chicago to Northglenn

Cheapest flights from Chicago

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 30 - Tue, Oct 7

ORD

O'Hare Intl.

DEN

Denver Intl.

$68 Roundtrip, found 17 hours ago

$68

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Tue, Sep 30 from O'Hare Intl. to Denver Intl., returning Tue, Oct 7, priced at $68 found 17 hours ago

Mon, Sep 29 - Tue, Oct 7

ORD

O'Hare Intl.

DEN

Denver Intl.

$78 Roundtrip, found 17 hours ago

$78

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Mon, Sep 29 from O'Hare Intl. to Denver Intl., returning Tue, Oct 7, priced at $78 found 17 hours ago

Mon, Sep 29 - Mon, Oct 6

ORD

O'Hare Intl.

DEN

Denver Intl.

$88 Roundtrip, found 17 hours ago

$88

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Mon, Sep 29 from O'Hare Intl. to Denver Intl., returning Mon, Oct 6, priced at $88 found 17 hours ago

Wed, Oct 1 - Sat, Oct 11

ORD

O'Hare Intl.

DEN

Denver Intl.

$94 Roundtrip, found 18 hours ago

$94

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Wed, Oct 1 from O'Hare Intl. to Denver Intl., returning Sat, Oct 11, priced at $94 found 18 hours ago

Thu, Oct 2 - Sat, Oct 11

ORD

O'Hare Intl.

DEN

Denver Intl.

$104 Roundtrip, found 18 hours ago

$104

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Thu, Oct 2 from O'Hare Intl. to Denver Intl., returning Sat, Oct 11, priced at $104 found 18 hours ago

Sat, Aug 30 - Sat, Sep 6

ORD

O'Hare Intl.

DEN

Denver Intl.

$108 Roundtrip, found 7 hours ago

$108

Roundtrip

found 7 hours ago

Select Frontier Airlines flight, departing Sat, Aug 30 from O'Hare Intl. to Denver Intl., returning Sat, Sep 6, priced at $108 found 7 hours ago

Sat, Oct 4 - Wed, Oct 8

ORD

O'Hare Intl.

DEN

Denver Intl.

$113 Roundtrip, found 18 hours ago

$113

Roundtrip

found 18 hours ago

Select United flight, departing Sat, Oct 4 from O'Hare Intl. to Denver Intl., returning Wed, Oct 8, priced at $113 found 18 hours ago

Thu, Aug 21 - Sat, Aug 23

ORD

O'Hare Intl.

DEN

Denver Intl.

$114 Roundtrip, found 12 hours ago

$114

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Thu, Aug 21 from O'Hare Intl. to Denver Intl., returning Sat, Aug 23, priced at $114 found 12 hours ago

Fri, Oct 3 - Tue, Oct 7

ORD

O'Hare Intl.

DEN

Denver Intl.

$118 Roundtrip, found 17 hours ago

$118

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Fri, Oct 3 from O'Hare Intl. to Denver Intl., returning Tue, Oct 7, priced at $118 found 17 hours ago

Thu, Aug 21 - Mon, Aug 25

ORD

O'Hare Intl.

DEN

Denver Intl.

$120 Roundtrip, found 12 hours ago

$120

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Thu, Aug 21 from O'Hare Intl. to Denver Intl., returning Mon, Aug 25, priced at $120 found 12 hours ago

Sat, Jul 12 - Wed, Jul 16

ORD

O'Hare Intl.

DEN

Denver Intl.

$124 Roundtrip, found 1 day ago

$124

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Jul 12 from O'Hare Intl. to Denver Intl., returning Wed, Jul 16, priced at $124 found 1 day ago

Tue, Aug 26 - Sun, Aug 31

ORD

O'Hare Intl.

DEN

Denver Intl.

$125 Roundtrip, found 1 day ago

$125

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Aug 26 from O'Hare Intl. to Denver Intl., returning Sun, Aug 31, priced at $125 found 1 day ago

Sat, Aug 30 - Sat, Sep 6

ORD

O'Hare Intl.

DEN

Denver Intl.

$127 Roundtrip, found 7 hours ago

$127

Roundtrip

found 7 hours ago

Select Frontier Airlines flight, departing Sat, Aug 30 from O'Hare Intl. to Denver Intl., returning Sat, Sep 6, priced at $127 found 7 hours ago

Fri, Oct 3 - Tue, Oct 7

ORD

O'Hare Intl.

DEN

Denver Intl.

$128 Roundtrip, found 17 hours ago

$128

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Fri, Oct 3 from O'Hare Intl. to Denver Intl., returning Tue, Oct 7, priced at $128 found 17 hours ago

Sat, Jul 19 - Sat, Jul 26

MDW

Midway Intl.

DEN

Denver Intl.

$128 Roundtrip, found 14 hours ago

$128

Roundtrip

found 14 hours ago

Select Frontier Airlines flight, departing Sat, Jul 19 from Midway Intl. to Denver Intl., returning Sat, Jul 26, priced at $128 found 14 hours ago

Wed, Jul 16 - Fri, Jul 18

ORD

O'Hare Intl.

DEN

Denver Intl.

$132 Roundtrip, found 1 day ago

$132

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Jul 16 from O'Hare Intl. to Denver Intl., returning Fri, Jul 18, priced at $132 found 1 day ago

Sat, Aug 30 - Sat, Sep 6

ORD

O'Hare Intl.

DEN

Denver Intl.

$157 Roundtrip, found 7 hours ago

$157

Roundtrip

found 7 hours ago

Select United flight, departing Sat, Aug 30 from O'Hare Intl. to Denver Intl., returning Sat, Sep 6, priced at $157 found 7 hours ago

Sat, Aug 30 - Sat, Sep 6

ORD

O'Hare Intl.

DEN

Denver Intl.

$157 Roundtrip, found 7 hours ago

$157

Roundtrip

found 7 hours ago

Select American Airlines flight, departing Sat, Aug 30 from O'Hare Intl. to Denver Intl., returning Sat, Sep 6, priced at $157 found 7 hours ago

Sat, Sep 27 - Sat, Sep 27

ORD

O'Hare Intl.

DEN

Denver Intl.

$211 Roundtrip, found 6 days ago

$211

Roundtrip

found 6 days ago

Select Delta flight, departing Sat, Sep 27 from O'Hare Intl. to Denver Intl., returning Sat, Sep 27, priced at $211 found 6 days ago

Sat, Jul 19 - Sat, Jul 26

ORD

O'Hare Intl.

DEN

Denver Intl.

$325 Roundtrip, found 1 day ago

$325

Roundtrip

found 1 day ago

Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sat, Jul 19 from O'Hare Intl. to Denver Intl., returning Sat, Jul 26, priced at $325 found 1 day ago