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.

$44 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

Fri, Oct 2 - Mon, Oct 5

4:12 pm - 7:17 pmDEN Denver Intl-STL Lambert-St Louis

2h 05mnonstop

8:10 pm - 9:39 pmSTL Lambert-St Louis-DEN Denver Intl

2h 29mnonstop

$122Frontier

Fri, Oct 2 - Mon, Oct 5

10:49 pm - 11:32 amDEN Denver Intl-STL Lambert-St Louis

11h 43m1 stop Las Vegas Harry Reid Intl

8:10 pm - 9:39 pmSTL Lambert-St Louis-DEN Denver Intl

2h 29mnonstop

$136Frontier

Thu, Nov 12 - Sat, Nov 14

8:10 am - 11:15 amDEN Denver Intl-STL Lambert-St Louis

2h 05mnonstop

8:55 am - 10:20 amSTL Lambert-St Louis-DEN Denver Intl

2h 25mnonstop

$177Southwest

Wed, Nov 18 - Thu, Dec 3

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

2h 00mnonstop

11:20 am - 12:45 pmSTL Lambert-St Louis-DEN Denver Intl

2h 25mnonstop

$177Southwest

Mon, Oct 5 - Sat, Oct 10

8:28 pm - 11:44 pmDEN Denver Intl-STL Lambert-St Louis

2h 16mnonstop

1:36 pm - 3:00 pmSTL Lambert-St Louis-DEN Denver Intl

2h 24mnonstop

$177United Airlines

Thu, Nov 12 - Sat, Nov 14

10:39 am - 1:21 pmDEN Denver Intl-STL Lambert-St Louis

25h 42m2 stops Nashville Intl Jonesboro

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

2h 31mnonstop

$184Multiple Airlines

Wed, Nov 11 - Sun, Nov 15

12:21 pm - 3:23 pmDEN Denver Intl-STL Lambert-St Louis

2h 02mnonstop

2:00 pm - 5:22 pmSTL Lambert-St Louis-DEN Denver Intl

28h 22m2 stops Jonesboro Nashville Intl

$190Multiple Airlines

Fri, Feb 5 - Mon, Feb 8

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

2h 00mnonstop

5:45 pm - 7:31 pmSTL Lambert-St Louis-DEN Denver Intl

2h 46mnonstop

$194United Airlines

Sat, Oct 10 - Sat, Oct 17

3:58 pm - 11:42 pmCOS Colorado Springs-STL Lambert-St Louis

6h 44m1 stop Dallas/Fort Worth

5:40 am - 9:37 amSTL Lambert-St Louis-COS Colorado Springs

4h 57m1 stop Dallas/Fort Worth

$257American Airlines

Thu, Oct 22 - Mon, Oct 26

5:08 pm - 11:42 pmDRO Durango La Plata County-STL Lambert-St Louis

5h 34m1 stop Dallas/Fort Worth

5:40 am - 9:58 amSTL Lambert-St Louis-DRO Durango La Plata County

5h 18m1 stop Dallas/Fort Worth

$338American Airlines

Recent last minute flight deals from Colorado to St. Louis

Sat, Sep 19 - Mon, Oct 19

9:19 pm - 9:35 amDEN Denver Intl-STL Lambert-St Louis

11h 16m1 stop Dallas/Fort Worth

6:35 pm - 8:06 amSTL Lambert-St Louis-DEN Denver Intl

14h 31m1 stop Atlanta Hartsfield-Jackson

$283Frontier

Sat, Sep 19 - Mon, Oct 19

9:19 pm - 9:35 amDEN Denver Intl-STL Lambert-St Louis

11h 16m1 stop Dallas/Fort Worth

8:00 pm - 9:39 pmSTL Lambert-St Louis-DEN Denver Intl

2h 39mnonstop

$286Frontier

Thu, Sep 17 - Sat, Oct 3

7:00 am - 2:44 pmDRO Durango La Plata County-STL Lambert-St Louis

6h 44m1 stop Dallas/Fort Worth

3:34 pm - 7:29 pmSTL Lambert-St Louis-DRO Durango La Plata County

4h 55m1 stop Dallas/Fort Worth

$443American Airlines

Mon, Sep 21 - Sun, Sep 27

4:11 pm - 1:31 pmDEN Denver Intl-STL Lambert-St Louis

20h 20m2 stops Nashville Intl Jonesboro

12:27 pm - 10:07 amSTL Lambert-St Louis-DEN Denver Intl

22h 40m1 stop Las Vegas Harry Reid Intl

$480Multiple Airlines

Fri, Sep 18 - Mon, Sep 21

6:40 am - 4:34 pmDEN Denver Intl-STL Lambert-St Louis

8h 54m1 stop Orlando

2:00 pm - 10:43 pmSTL Lambert-St Louis-DEN Denver Intl

9h 43m2 stops Jonesboro Nashville Intl

$493Multiple Airlines

Thu, Sep 17 - Sat, Oct 3

10:24 am - 4:40 pmDRO Durango La Plata County-STL Lambert-St Louis

5h 16m1 stop Dallas/Fort Worth

1:49 pm - 10:22 pmSTL Lambert-St Louis-DRO Durango La Plata County

9h 33m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl

$517American Airlines

Mon, Sep 21 - Thu, Sep 24

8:15 am - 3:15 pmHDN Hayden Yampa Valley-STL Lambert-St Louis

6h 00m1 stop Denver Intl

2:00 pm - 7:20 pmSTL Lambert-St Louis-HDN Hayden Yampa Valley

6h 20m1 stop Denver Intl

$579Southwest

Mon, Sep 21 - Thu, Sep 24

8:15 am - 3:15 pmHDN Hayden Yampa Valley-STL Lambert-St Louis

6h 00m1 stop Denver Intl

10:05 am - 7:20 pmSTL Lambert-St Louis-HDN Hayden Yampa Valley

10h 15m2 stops Nashville Intl Denver Intl

$584Southwest

Thu, Sep 17 - Sat, Oct 3

11:26 am - 11:38 pmDRO Durango La Plata County-STL Lambert-St Louis

11h 12m2 stops Denver Intl Newark

11:35 am - 8:38 pmSTL Lambert-St Louis-DRO Durango La Plata County

10h 03m2 stops Chicago O'Hare Intl Denver Intl

$584United Airlines

Mon, Sep 21 - Wed, Sep 23

1:27 pm - 4:34 pmDEN Denver Intl-STL Lambert-St Louis

2h 07mnonstop

1:36 pm - 3:00 pmSTL Lambert-St Louis-DEN Denver Intl

2h 24mnonstop

$637United Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$44

Best time to beat the crowds with an average 8% drop in price.

Most popular time to fly with an average 8% 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.