How does KAYAK find such low prices on flights from Colorado to St. Louis?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Colorado to St. Louis.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Colorado to St. Louis?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Colorado is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Colorado to St. Louis?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Colorado with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado to St. Louis?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$26 CHEAP FLIGHTS from Colorado to St. Louis

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Flight Deals

Cheap Flights from Colorado to St. Louis

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Colorado to St. Louis

Wed, Dec 23 - Wed, Dec 23

12:23 pm - 3:26 pmDEN Denver Intl-STL Lambert-St Louis

2h 03mnonstop

6:21 pm - 6:29 amSTL Lambert-St Louis-DEN Denver Intl

13h 08m1 stop Atlanta Hartsfield-Jackson

$177Frontier

Tue, Nov 24 - Tue, Dec 1

11:59 pm - 12:25 pmDEN Denver Intl-STL Lambert-St Louis

11h 26m1 stop Orlando

6:13 pm - 9:58 amSTL Lambert-St Louis-DEN Denver Intl

16h 45m1 stop Orlando

$177Frontier

Tue, Jan 5 - Tue, Jan 5

8:10 am - 11:10 amDEN Denver Intl-STL Lambert-St Louis

2h 00mnonstop

5:25 pm - 6:55 pmSTL Lambert-St Louis-DEN Denver Intl

2h 30mnonstop

$177Southwest

Fri, Nov 27 - Tue, Dec 1

7:10 am - 12:20 pmDEN Denver Intl-STL Lambert-St Louis

4h 10m1 stop Chicago Midway

6:20 am - 10:00 amSTL Lambert-St Louis-DEN Denver Intl

4h 40m1 stop Chicago Midway

$177Southwest

Thu, Nov 19 - Mon, Nov 23

6:15 pm - 11:22 pmDEN Denver Intl-STL Lambert-St Louis

4h 07m1 stop Minneapolis St Paul

5:30 pm - 11:15 pmSTL Lambert-St Louis-DEN Denver Intl

6h 45m1 stop Atlanta Hartsfield-Jackson

$177Delta

Sat, Nov 21 - Sun, Nov 22

5:52 pm - 8:59 pmDEN Denver Intl-STL Lambert-St Louis

2h 07mnonstop

4:39 pm - 6:10 pmSTL Lambert-St Louis-DEN Denver Intl

2h 31mnonstop

$182United Airlines

Mon, Nov 23 - Fri, Nov 27

6:18 am - 1:30 pmDEN Denver Intl-STL Lambert-St Louis

6h 12m1 stop Salt Lake City

7:08 am - 12:03 pmSTL Lambert-St Louis-DEN Denver Intl

5h 55m1 stop Salt Lake City

$187Delta

Wed, Dec 30 - Fri, Jan 1

1:55 pm - 5:00 pmDEN Denver Intl-STL Lambert-St Louis

2h 05mnonstop

6:58 pm - 11:20 pmSTL Lambert-St Louis-DEN Denver Intl

5h 22m1 stop Chicago O'Hare Intl

$187United Airlines

Thu, Dec 10 - Mon, Dec 14

8:00 am - 1:55 pmCOS Colorado Springs-STL Lambert-St Louis

4h 55m1 stop Dallas/Fort Worth

5:00 am - 12:09 pmSTL Lambert-St Louis-COS Colorado Springs

8h 09m1 stop Dallas/Fort Worth

$293American Airlines

Thu, Dec 17 - Wed, Dec 30

4:59 pm - 12:16 amCOS Colorado Springs-STL Lambert-St Louis

6h 17m1 stop Dallas/Fort Worth

7:14 pm - 11:40 pmSTL Lambert-St Louis-COS Colorado Springs

5h 26m1 stop Dallas/Fort Worth

$323American Airlines

Recent last minute flight deals from Colorado to St. Louis

Wed, Nov 4 - Sat, Nov 7

7:30 am - 12:33 pmDEN Denver Intl-STL Lambert-St Louis

28h 03m1 stop Las Vegas Harry Reid Intl

4:26 pm - 8:13 amSTL Lambert-St Louis-DEN Denver Intl

16h 47m1 stop Orlando

$278Frontier

Wed, Nov 4 - Mon, Nov 9

1:05 pm - 12:33 pmDEN Denver Intl-STL Lambert-St Louis

22h 28m1 stop Las Vegas Harry Reid Intl

7:59 pm - 9:30 pmSTL Lambert-St Louis-DEN Denver Intl

2h 31mnonstop

$291Frontier

Wed, Nov 4 - Sun, Nov 8

10:44 pm - 12:33 pmDEN Denver Intl-STL Lambert-St Louis

12h 49m1 stop Las Vegas Harry Reid Intl

4:26 pm - 8:13 amSTL Lambert-St Louis-DEN Denver Intl

16h 47m1 stop Orlando

$298Frontier

Wed, Nov 4 - Mon, Nov 9

1:05 pm - 12:33 pmDEN Denver Intl-STL Lambert-St Louis

22h 28m1 stop Las Vegas Harry Reid Intl

2:00 pm - 8:13 amSTL Lambert-St Louis-DEN Denver Intl

19h 13m3 stops Jonesboro Nashville Intl Orlando

$423Multiple Airlines

Wed, Nov 4 - Sun, Nov 8

7:30 am - 12:33 pmDEN Denver Intl-STL Lambert-St Louis

28h 03m1 stop Las Vegas Harry Reid Intl

2:00 pm - 8:13 amSTL Lambert-St Louis-DEN Denver Intl

19h 13m3 stops Jonesboro Nashville Intl Orlando

$423Multiple Airlines

Thu, Nov 5 - Sat, Nov 7

7:00 am - 12:38 pmHDN Hayden Yampa Valley-STL Lambert-St Louis

4h 38m1 stop Denver Intl

8:50 am - 12:25 pmSTL Lambert-St Louis-HDN Hayden Yampa Valley

4h 35m1 stop Denver Intl

$499United Airlines

Thu, Nov 5 - Sat, Nov 7

7:00 am - 12:38 pmHDN Hayden Yampa Valley-STL Lambert-St Louis

4h 38m1 stop Denver Intl

11:15 am - 8:32 pmSTL Lambert-St Louis-HDN Hayden Yampa Valley

10h 17m2 stops Chicago O'Hare Intl Denver Intl

$504United Airlines

Wed, Nov 4 - Mon, Nov 9

12:54 pm - 8:19 pmASE Aspen Pitkin County-STL Lambert-St Louis

6h 25m1 stop Dallas/Fort Worth

5:00 am - 12:24 pmSTL Lambert-St Louis-ASE Aspen Pitkin County

8h 24m1 stop Dallas/Fort Worth

$525American Airlines

Wed, Nov 4 - Tue, Nov 10

12:25 pm - 3:20 pmDEN Denver Intl-STL Lambert-St Louis

1h 55mnonstop

8:25 am - 9:45 amSTL Lambert-St Louis-DEN Denver Intl

2h 20mnonstop

$662Southwest

Thu, Nov 5 - Mon, Nov 9

7:20 pm - 10:25 pmDEN Denver Intl-STL Lambert-St Louis

2h 05mnonstop

6:30 pm - 7:55 pmSTL Lambert-St Louis-DEN Denver Intl

2h 25mnonstop

$662Southwest

Useful Info

Low season	January
High season	July
Cheapest flight	$26

Best time to beat the crowds with an average 9% drop in price.

Most popular time to fly with an average 5% increase in price.

Flight from Denver to St. Louis

How does KAYAK find such low prices on flights from Colorado to St. Louis?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Colorado to St. Louis.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Colorado to St. Louis?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Colorado is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Colorado to St. Louis?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Colorado with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado to St. Louis?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.