Flights from Denver to Historic Route 66

Cheapest flights from Denver

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.

Thu, Sep 4 - Mon, Sep 8

DEN

Denver Intl.

ORD

O'Hare Intl.

$120 Roundtrip, found 4 hours ago

$120

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Thu, Sep 4 from Denver Intl. to O'Hare Intl., returning Mon, Sep 8, priced at $120 found 4 hours ago

Sat, Sep 6 - Tue, Sep 9

DEN

Denver Intl.

OKC

Will Rogers World

$120 Roundtrip, found 2 days ago

$120

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Sep 6 from Denver Intl. to Will Rogers World, returning Tue, Sep 9, priced at $120 found 2 days ago

Sat, Sep 6 - Wed, Sep 10

DEN

Denver Intl.

OKC

Will Rogers World

$121 Roundtrip, found 2 days ago

$121

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Sep 6 from Denver Intl. to Will Rogers World, returning Wed, Sep 10, priced at $121 found 2 days ago

Tue, Nov 11 - Sun, Nov 16

DEN

Denver Intl.

STL

Lambert-St. Louis Intl.

$123 Roundtrip, found 1 day ago

$123

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Nov 11 from Denver Intl. to Lambert-St. Louis Intl., returning Sun, Nov 16, priced at $123 found 1 day ago

Thu, Sep 4 - Fri, Sep 12

DEN

Denver Intl.

ORD

O'Hare Intl.

$124 Roundtrip, found 4 hours ago

$124

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Thu, Sep 4 from Denver Intl. to O'Hare Intl., returning Fri, Sep 12, priced at $124 found 4 hours ago

Fri, Sep 5 - Fri, Sep 12

DEN

Denver Intl.

ORD

O'Hare Intl.

$128 Roundtrip, found 4 hours ago

$128

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Denver Intl. to O'Hare Intl., returning Fri, Sep 12, priced at $128 found 4 hours ago

Thu, Oct 2 - Mon, Oct 6

DEN

Denver Intl.

ORD

O'Hare Intl.

$129 Roundtrip, found 2 days ago

$129

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Thu, Oct 2 from Denver Intl. to O'Hare Intl., returning Mon, Oct 6, priced at $129 found 2 days ago

Tue, Sep 9 - Sat, Sep 20

DEN

Denver Intl.

ORD

O'Hare Intl.

$136 Roundtrip, found 1 day ago

$136

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Sep 9 from Denver Intl. to O'Hare Intl., returning Sat, Sep 20, priced at $136 found 1 day ago

Mon, Sep 8 - Sat, Sep 20

DEN

Denver Intl.

ORD

O'Hare Intl.

$138 Roundtrip, found 1 day ago

$138

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Sep 8 from Denver Intl. to O'Hare Intl., returning Sat, Sep 20, priced at $138 found 1 day ago

Mon, Sep 8 - Mon, Sep 15

DEN

Denver Intl.

ORD

O'Hare Intl.

$140 Roundtrip, found 1 day ago

$140

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Sep 8 from Denver Intl. to O'Hare Intl., returning Mon, Sep 15, priced at $140 found 1 day ago

Sun, Aug 31 - Sat, Sep 6

DEN

Denver Intl.

ORD

O'Hare Intl.

$145 Roundtrip, found 2 days ago

$145

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sun, Aug 31 from Denver Intl. to O'Hare Intl., returning Sat, Sep 6, priced at $145 found 2 days ago

Sun, Sep 7 - Sat, Sep 20

DEN

Denver Intl.

ORD

O'Hare Intl.

$146 Roundtrip, found 1 day ago

$146

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Sep 7 from Denver Intl. to O'Hare Intl., returning Sat, Sep 20, priced at $146 found 1 day ago

Sun, Aug 31 - Mon, Sep 8

DEN

Denver Intl.

ORD

O'Hare Intl.

$147 Roundtrip, found 2 days ago

$147

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sun, Aug 31 from Denver Intl. to O'Hare Intl., returning Mon, Sep 8, priced at $147 found 2 days ago

Sun, Sep 7 - Mon, Sep 15

DEN

Denver Intl.

ORD

O'Hare Intl.

$148 Roundtrip, found 1 day ago

$148

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Sep 7 from Denver Intl. to O'Hare Intl., returning Mon, Sep 15, priced at $148 found 1 day ago

Thu, Sep 4 - Tue, Sep 9

DEN

Denver Intl.

OKC

Will Rogers World

$149 Roundtrip, found 2 days ago

$149

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Thu, Sep 4 from Denver Intl. to Will Rogers World, returning Tue, Sep 9, priced at $149 found 2 days ago

Thu, Sep 4 - Wed, Sep 10

DEN

Denver Intl.

OKC

Will Rogers World

$150 Roundtrip, found 2 days ago

$150

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Thu, Sep 4 from Denver Intl. to Will Rogers World, returning Wed, Sep 10, priced at $150 found 2 days ago

Fri, Aug 8 - Mon, Aug 11

DEN

Denver Intl.

OKC

Will Rogers World

$153 Roundtrip, found 3 days ago

$153

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Denver Intl. to Will Rogers World, returning Mon, Aug 11, priced at $153 found 3 days ago

Wed, Sep 24 - Mon, Sep 29

DEN

Denver Intl.

ORD

O'Hare Intl.

$159 Roundtrip, found 3 days ago

$159

Roundtrip

found 3 days ago

Select United flight, departing Wed, Sep 24 from Denver Intl. to O'Hare Intl., returning Mon, Sep 29, priced at $159 found 3 days ago

Tue, Sep 2 - Sat, Sep 13

DEN

Denver Intl.

OKC

Will Rogers World

$177 Roundtrip, found 2 days ago

$177

Roundtrip

found 2 days ago

Select Delta flight, departing Tue, Sep 2 from Denver Intl. to Will Rogers World, returning Sat, Sep 13, priced at $177 found 2 days ago

Wed, Sep 24 - Mon, Sep 29

DEN

Denver Intl.

ORD

O'Hare Intl.

$181 Roundtrip, found 3 days ago

$181

Roundtrip

found 3 days ago

Select American Airlines flight, departing Wed, Sep 24 from Denver Intl. to O'Hare Intl., returning Mon, Sep 29, priced at $181 found 3 days ago