Flights from Chicago to Mountain States

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.

Sat, Aug 30 - Sat, Sep 6

ORD

O'Hare Intl.

DEN

Denver Intl.

$119 Roundtrip, found 16 hours ago

$119

Roundtrip

found 16 hours ago

Select Frontier Airlines flight, departing Sat, Aug 30 from O'Hare Intl. to Denver Intl., returning Sat, Sep 6, priced at $119 found 16 hours ago

Mon, Sep 1 - Thu, Sep 11

ORD

O'Hare Intl.

LAS

Harry Reid Intl.

$120 Roundtrip, found 6 hours ago

$120

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Mon, Sep 1 from O'Hare Intl. to Harry Reid Intl., returning Thu, Sep 11, priced at $120 found 6 hours ago

Fri, Oct 24 - Thu, Oct 30

ORD

O'Hare Intl.

LAS

Harry Reid Intl.

$125 Roundtrip, found 9 hours ago

$125

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Fri, Oct 24 from O'Hare Intl. to Harry Reid Intl., returning Thu, Oct 30, priced at $125 found 9 hours ago

Sat, Aug 30 - Sat, Sep 6

ORD

O'Hare Intl.

DEN

Denver Intl.

$128 Roundtrip, found 16 hours ago

$128

Roundtrip

found 16 hours ago

Select United flight, departing Sat, Aug 30 from O'Hare Intl. to Denver Intl., returning Sat, Sep 6, priced at $128 found 16 hours ago

Mon, Oct 27 - Fri, Oct 31

ORD

O'Hare Intl.

LAS

Harry Reid Intl.

$129 Roundtrip, found 9 hours ago

$129

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Mon, Oct 27 from O'Hare Intl. to Harry Reid Intl., returning Fri, Oct 31, priced at $129 found 9 hours ago

Sat, Aug 30 - Sat, Sep 6

ORD

O'Hare Intl.

DEN

Denver Intl.

$132 Roundtrip, found 16 hours ago

$132

Roundtrip

found 16 hours ago

Select Frontier Airlines flight, departing Sat, Aug 30 from O'Hare Intl. to Denver Intl., returning Sat, Sep 6, priced at $132 found 16 hours ago

Fri, Oct 24 - Fri, Oct 31

ORD

O'Hare Intl.

LAS

Harry Reid Intl.

$134 Roundtrip, found 9 hours ago

$134

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Fri, Oct 24 from O'Hare Intl. to Harry Reid Intl., returning Fri, Oct 31, priced at $134 found 9 hours ago

Sat, Aug 30 - Sat, Sep 6

ORD

O'Hare Intl.

DEN

Denver Intl.

$135 Roundtrip, found 16 hours ago

$135

Roundtrip

found 16 hours ago

Select United flight, departing Sat, Aug 30 from O'Hare Intl. to Denver Intl., returning Sat, Sep 6, priced at $135 found 16 hours ago

Sat, Aug 30 - Sat, Sep 6

ORD

O'Hare Intl.

DEN

Denver Intl.

$135 Roundtrip, found 16 hours ago

$135

Roundtrip

found 16 hours ago

Select American Airlines flight, departing Sat, Aug 30 from O'Hare Intl. to Denver Intl., returning Sat, Sep 6, priced at $135 found 16 hours ago

Tue, Oct 7 - Sat, Oct 11

ORD

O'Hare Intl.

DEN

Denver Intl.

$136 Roundtrip, found 2 days ago

$136

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Oct 7 from O'Hare Intl. to Denver Intl., returning Sat, Oct 11, priced at $136 found 2 days ago

Mon, Sep 29 - Tue, Oct 7

ORD

O'Hare Intl.

DEN

Denver Intl.

$137 Roundtrip, found 4 days ago

$137

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Mon, Sep 29 from O'Hare Intl. to Denver Intl., returning Tue, Oct 7, priced at $137 found 4 days ago

Tue, Sep 23 - Tue, Sep 30

ORD

O'Hare Intl.

LAS

Harry Reid Intl.

$144 Roundtrip, found 1 day ago

$144

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Tue, Sep 23 from O'Hare Intl. to Harry Reid Intl., returning Tue, Sep 30, priced at $144 found 1 day ago

Fri, Oct 10 - Sun, Oct 12

MDW

Midway Intl.

DEN

Denver Intl.

$156 Roundtrip, found 2 days ago

$156

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Oct 10 from Midway Intl. to Denver Intl., returning Sun, Oct 12, priced at $156 found 2 days ago

Tue, Oct 21 - Mon, Oct 27

ORD

O'Hare Intl.

LAS

Harry Reid Intl.

$170 Roundtrip, found 9 hours ago

$170

Roundtrip

found 9 hours ago

Select Hawaiian Airlines flight, departing Tue, Oct 21 from O'Hare Intl. to Harry Reid Intl., returning Mon, Oct 27, priced at $170 found 9 hours ago

Wed, Aug 27 - Wed, Sep 10

ORD

O'Hare Intl.

BZN

Bozeman Yellowstone Intl.

$191 Roundtrip, found 11 hours ago

$191

Roundtrip

found 11 hours ago

Select American Airlines flight, departing Wed, Aug 27 from O'Hare Intl. to Bozeman Yellowstone Intl., returning Wed, Sep 10, priced at $191 found 11 hours ago

Sun, Oct 26 - Thu, Oct 30

ORD

O'Hare Intl.

LAS

Harry Reid Intl.

$202 Roundtrip, found 4 days ago

$202

Roundtrip

found 4 days ago

Select Alaska Airlines flight, departing Sun, Oct 26 from O'Hare Intl. to Harry Reid Intl., returning Thu, Oct 30, priced at $202 found 4 days ago

Sun, Aug 31 - Sat, Sep 6

ORD

O'Hare Intl.

DEN

Denver Intl.

$217 Roundtrip, found 1 day ago

$217

Roundtrip

found 1 day ago

Select Delta flight, departing Sun, Aug 31 from O'Hare Intl. to Denver Intl., returning Sat, Sep 6, priced at $217 found 1 day ago

Sat, Oct 25 - Sat, Nov 1

MDW

Midway Intl.

LAS

Harry Reid Intl.

$228 Roundtrip, found 10 hours ago

$228

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Sat, Oct 25 from Midway Intl. to Harry Reid Intl., returning Sat, Nov 1, priced at $228 found 10 hours ago

Sun, Oct 26 - Thu, Oct 30

ORD

O'Hare Intl.

LAS

Harry Reid Intl.

$280 Roundtrip, found 4 days ago

$280

Roundtrip

found 4 days ago

Select Sun Country Airlines flight, departing Sun, Oct 26 from O'Hare Intl. to Harry Reid Intl., returning Thu, Oct 30, priced at $280 found 4 days ago

Tue, Jun 2 - Thu, Jun 11

MDW

Midway Intl.

BZN

Bozeman Yellowstone Intl.

$659 Roundtrip, found 5 days ago

$659

Roundtrip

found 5 days ago

Select Delta flight, departing Tue, Jun 2 from Midway Intl. to Bozeman Yellowstone Intl., returning Thu, Jun 11, priced at $659 found 5 days ago