Flights from St. Louis to Colorado Springs

Cheapest flights from St. Louis

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.

Wed, Aug 20 - Mon, Aug 25

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$118 Roundtrip, found 1 day ago

$118

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Aug 20 from Lambert-St. Louis Intl. to Denver Intl., returning Mon, Aug 25, priced at $118 found 1 day ago

Sat, Sep 27 - Sat, Oct 4

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$129 Roundtrip, found 5 days ago

$129

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, Sep 27 from Lambert-St. Louis Intl. to Denver Intl., returning Sat, Oct 4, priced at $129 found 5 days ago

Thu, Sep 25 - Sat, Oct 4

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$133 Roundtrip, found 5 days ago

$133

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Sep 25 from Lambert-St. Louis Intl. to Denver Intl., returning Sat, Oct 4, priced at $133 found 5 days ago

Fri, Sep 26 - Sat, Oct 4

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$138 Roundtrip, found 5 days ago

$138

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Sep 26 from Lambert-St. Louis Intl. to Denver Intl., returning Sat, Oct 4, priced at $138 found 5 days ago

Fri, Sep 26 - Mon, Oct 6

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$143 Roundtrip, found 5 days ago

$143

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Sep 26 from Lambert-St. Louis Intl. to Denver Intl., returning Mon, Oct 6, priced at $143 found 5 days ago

Mon, Aug 18 - Sat, Aug 23

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$146 Roundtrip, found 1 day ago

$146

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Aug 18 from Lambert-St. Louis Intl. to Denver Intl., returning Sat, Aug 23, priced at $146 found 1 day ago

Fri, Sep 26 - Sun, Oct 5

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$149 Roundtrip, found 5 days ago

$149

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Sep 26 from Lambert-St. Louis Intl. to Denver Intl., returning Sun, Oct 5, priced at $149 found 5 days ago

Wed, Aug 20 - Mon, Aug 25

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$152 Roundtrip, found 1 day ago

$152

Roundtrip

found 1 day ago

Select United flight, departing Wed, Aug 20 from Lambert-St. Louis Intl. to Denver Intl., returning Mon, Aug 25, priced at $152 found 1 day ago

Fri, Jul 25 - Wed, Aug 13

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$155 Roundtrip, found 3 days ago

$155

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Jul 25 from Lambert-St. Louis Intl. to Denver Intl., returning Wed, Aug 13, priced at $155 found 3 days ago

Mon, Aug 18 - Fri, Aug 22

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$157 Roundtrip, found 1 day ago

$157

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Aug 18 from Lambert-St. Louis Intl. to Denver Intl., returning Fri, Aug 22, priced at $157 found 1 day ago

Wed, Aug 20 - Mon, Aug 25

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$157 Roundtrip, found 1 day ago

$157

Roundtrip

found 1 day ago

Select United flight, departing Wed, Aug 20 from Lambert-St. Louis Intl. to Denver Intl., returning Mon, Aug 25, priced at $157 found 1 day ago

Wed, Aug 20 - Mon, Aug 25

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$162 Roundtrip, found 1 day ago

$162

Roundtrip

found 1 day ago

Select American Airlines flight, departing Wed, Aug 20 from Lambert-St. Louis Intl. to Denver Intl., returning Mon, Aug 25, priced at $162 found 1 day ago

Sun, Sep 28 - Tue, Oct 7

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$163 Roundtrip, found 5 days ago

$163

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sun, Sep 28 from Lambert-St. Louis Intl. to Denver Intl., returning Tue, Oct 7, priced at $163 found 5 days ago

Wed, Aug 20 - Mon, Aug 25

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$167 Roundtrip, found 1 day ago

$167

Roundtrip

found 1 day ago

Select United flight, departing Wed, Aug 20 from Lambert-St. Louis Intl. to Denver Intl., returning Mon, Aug 25, priced at $167 found 1 day ago

Fri, Aug 22 - Sun, Aug 24

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$168 Roundtrip, found 1 day ago

$168

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Aug 22 from Lambert-St. Louis Intl. to Denver Intl., returning Sun, Aug 24, priced at $168 found 1 day ago

Sat, Aug 2 - Mon, Aug 4

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$170 Roundtrip, just found

$170

Roundtrip

just found

Select Frontier Airlines flight, departing Sat, Aug 2 from Lambert-St. Louis Intl. to Denver Intl., returning Mon, Aug 4, priced at $170 just found

Wed, Aug 20 - Mon, Aug 25

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$172 Roundtrip, found 1 day ago

$172

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Aug 20 from Lambert-St. Louis Intl. to Denver Intl., returning Mon, Aug 25, priced at $172 found 1 day ago

Fri, Sep 26 - Thu, Oct 9

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$173 Roundtrip, found 5 days ago

$173

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Sep 26 from Lambert-St. Louis Intl. to Denver Intl., returning Thu, Oct 9, priced at $173 found 5 days ago

Wed, Aug 20 - Mon, Aug 25

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$177 Roundtrip, found 1 day ago

$177

Roundtrip

found 1 day ago

Select American Airlines flight, departing Wed, Aug 20 from Lambert-St. Louis Intl. to Denver Intl., returning Mon, Aug 25, priced at $177 found 1 day ago

Mon, Sep 29 - Thu, Oct 2

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$177 Roundtrip, found 6 days ago

$177

Roundtrip

found 6 days ago

Select Delta flight, departing Mon, Sep 29 from Lambert-St. Louis Intl. to Denver Intl., returning Thu, Oct 2, priced at $177 found 6 days ago