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Cheap flights from Colorado to St. Louis from $33

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to St. Louis departing on 2/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Colorado to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Colorado to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Colorado to St. Louis.

Cheap last minute flights

Planning a quick getaway from Colorado to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Colorado to St. Louis

Find recent round-trip train or bus tickets from Colorado to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
5:05 am - 8:13 amDEN-STL
2h 08mnonstop
6:46 pm - 8:22 pmSTL-DEN
2h 36mnonstop
$67Frontier
Find Deal
Sat, Dec 14 - Mon, Dec 16
5:05 am - 8:13 amDEN-STL
2h 08mnonstop
6:46 pm - 8:22 pmSTL-DEN
2h 36mnonstop
$68Frontier
Find Deal
Wed, Dec 4 - Wed, Dec 11
7:47 am - 2:36 pmDEN-STL
5h 49m1 stop
4:39 pm - 6:15 pmSTL-DEN
2h 36mnonstop
$187United Airlines
Find Deal
Thu, Feb 27 - Wed, Mar 5
9:40 am - 12:48 pmDEN-STL
2h 08mnonstop
8:27 am - 10:05 amSTL-DEN
2h 38mnonstop
$197United Airlines
Find Deal
Sun, Jan 26 - Fri, Jan 31
2:23 pm - 10:26 pmDEN-STL
7h 03m1 stop
7:05 pm - 12:24 amSTL-DEN
6h 19m1 stop
$236Delta
Find Deal
Wed, Dec 11 - Fri, Dec 13
6:45 pm - 9:45 pmDEN-STL
2h 00mnonstop
6:35 am - 8:00 amSTL-DEN
2h 25mnonstop
$248Southwest
Find Deal
Mon, Dec 9 - Thu, Dec 12
5:20 pm - 8:20 pmDEN-STL
2h 00mnonstop
8:15 pm - 9:45 pmSTL-DEN
2h 30mnonstop
$258Southwest
Find Deal
Thu, Dec 12 - Sun, Jan 12
9:26 am - 3:15 pmDEN-STL
4h 49m1 stop
5:45 am - 10:14 amSTL-DEN
5h 29m1 stop
$276American Airlines
Find Deal
Sat, Dec 7 - Sun, Dec 8
5:00 am - 10:46 amDEN-STL
4h 46m1 stop
5:45 am - 10:14 amSTL-DEN
5h 29m1 stop
$278American Airlines
Find Deal
Wed, Dec 4 - Sun, Dec 8
12:55 am - 9:22 amDEN-STL
7h 27m1 stop
6:40 pm - 11:30 pmSTL-DEN
5h 50m1 stop
$291Delta
Find Deal
Thu, Dec 12 - Sat, Dec 21
6:00 am - 9:16 amDEN-STL
2h 16mnonstop
$33Frontier
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Sat, Feb 15
5:05 am - 8:13 amDEN-STL
2h 08mnonstop
$34Frontier
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Wed, Dec 18
9:40 am - 12:48 pmDEN-STL
2h 08mnonstop
$79United Airlines
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Tue, Feb 11
6:00 am - 12:16 pmDEN-STL
5h 16m1 stop
$88United Airlines
Find Deal
Tue, Jan 7
7:20 pm - 10:20 pmDEN-STL
2h 00mnonstop
$109Southwest
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Tue, Jan 21
12:55 am - 9:22 amDEN-STL
7h 27m1 stop
$128Delta
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Fri, Dec 6
8:20 pm - 11:20 pmDEN-STL
2h 00mnonstop
$139Southwest
Find Deal
Thu, Dec 12
12:55 am - 9:22 amDEN-STL
7h 27m1 stop
$148Delta
Find Deal
Tue, Dec 17
5:12 pm - 10:25 pmCOS-STL
4h 13m1 stop
$163American Airlines
Find Deal
Thu, Mar 13
5:00 am - 10:45 amDEN-STL
4h 45m1 stop
$173American Airlines
Find Deal
Fri, Dec 20
9:30 am - 12:34 pmDEN-STL
2h 04mnonstop
5:02 pm - 8:39 amSTL-DEN
16h 37m1 stop
$281Frontier
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Sun, Nov 24 - Tue, Dec 3
9:03 pm - 12:06 amDEN-STL
2h 03mnonstop
5:02 pm - 11:35 pmSTL-DEN
7h 33m1 stop
$283Frontier
Find Deal
Fri, Nov 22 - Tue, Dec 3
12:55 am - 9:09 amDEN-STL
7h 14m1 stop
10:21 am - 4:12 pmSTL-DEN
6h 51m1 stop
$336Delta
Find Deal
Tue, Nov 26 - Tue, Dec 3
4:35 pm - 10:38 pmGJT-STL
5h 03m1 stop
4:03 pm - 9:11 pmSTL-GJT
6h 08m1 stop
$473American Airlines
Find Deal
Tue, Nov 26 - Fri, Nov 29
5:00 am - 4:37 pmGJT-STL
10h 37m2 stops
5:17 am - 10:41 amSTL-GJT
6h 24m1 stop
$478American Airlines
Find Deal
Tue, Nov 26 - Fri, Nov 29
12:55 am - 9:09 amDEN-STL
7h 14m1 stop
7:11 pm - 12:21 amSTL-DEN
6h 10m1 stop
$521Delta
Find Deal
Tue, Nov 26 - Mon, Dec 2
1:29 pm - 4:32 pmDEN-STL
2h 03mnonstop
8:30 am - 10:00 amSTL-DEN
2h 30mnonstop
$557United Airlines
Find Deal
Fri, Nov 22 - Tue, Dec 3
3:41 pm - 11:30 pmDEN-STL
6h 49m1 stop
4:31 pm - 6:02 pmSTL-DEN
2h 31mnonstop
$567United Airlines
Find Deal
Fri, Nov 22 - Tue, Dec 3
8:15 am - 11:15 amDEN-STL
2h 00mnonstop
4:45 pm - 6:10 pmSTL-DEN
2h 25mnonstop
$578Southwest
Find Deal
Sun, Nov 24 - Tue, Dec 3
8:15 am - 11:15 amDEN-STL
2h 00mnonstop
4:45 pm - 6:10 pmSTL-DEN
2h 25mnonstop
$598Southwest
Find Deal
Sun, Nov 24 - Tue, Dec 3
5:05 am - 8:13 amDEN-STL
2h 08mnonstop
6:46 pm - 8:22 pmSTL-DEN
2h 36mnonstop
$67Frontier
Find Deal
Sat, Dec 14 - Mon, Dec 16
5:05 am - 8:13 amDEN-STL
2h 08mnonstop
6:46 pm - 8:22 pmSTL-DEN
2h 36mnonstop
$68Frontier
Find Deal
Wed, Dec 4 - Wed, Dec 11
6:00 am - 9:16 amDEN-STL
2h 16mnonstop
7:09 pm - 8:37 pmSTL-DEN
2h 28mnonstop
$72Frontier
Find Deal
Sat, Jan 18 - Mon, Jan 20
5:05 am - 8:13 amDEN-STL
2h 08mnonstop
6:46 pm - 8:22 pmSTL-DEN
2h 36mnonstop
$89Frontier
Find Deal
Wed, Dec 11 - Fri, Dec 13
9:40 am - 12:48 pmDEN-STL
2h 08mnonstop
8:27 am - 10:05 amSTL-DEN
2h 38mnonstop
$197United Airlines
Find Deal
Sun, Jan 26 - Fri, Jan 31
7:10 pm - 10:16 pmDEN-STL
2h 06mnonstop
4:43 pm - 6:20 pmSTL-DEN
2h 37mnonstop
$207United Airlines
Find Deal
Thu, Dec 19 - Tue, Dec 24
1:25 pm - 4:28 pmDEN-STL
2h 03mnonstop
4:36 pm - 6:13 pmSTL-DEN
2h 37mnonstop
$217United Airlines
Find Deal
Fri, Feb 7 - Sun, Feb 9
6:45 pm - 9:45 pmDEN-STL
2h 00mnonstop
6:35 am - 8:00 amSTL-DEN
2h 25mnonstop
$248Southwest
Find Deal
Mon, Dec 9 - Thu, Dec 12
5:20 pm - 8:20 pmDEN-STL
2h 00mnonstop
8:15 pm - 9:45 pmSTL-DEN
2h 30mnonstop
$258Southwest
Find Deal
Thu, Dec 12 - Sun, Jan 12
8:20 pm - 11:20 pmDEN-STL
2h 00mnonstop
5:30 am - 7:00 amSTL-DEN
2h 30mnonstop
$278Southwest
Find Deal
Fri, Dec 6 - Sun, Dec 8

Frontier flights from Colorado to St. Louis

Our best Frontier deals on Colorado to St. Louis flight tickets
Frontier
Dec 14
DEN5:05 amDenver Intl
2h 08m
STL8:13 amLambert-St Louis
Dec 16
STL6:46 pmLambert-St Louis
2h 36m
DEN8:22 pmDenver Intl
Frontier
Dec 4
DEN5:05 amDenver Intl
2h 08m
STL8:13 amLambert-St Louis
Dec 11
STL6:46 pmLambert-St Louis
2h 36m
DEN8:22 pmDenver Intl
Frontier
Jan 18
DEN6:00 amDenver Intl
2h 16m
STL9:16 amLambert-St Louis
Jan 20
STL7:09 pmLambert-St Louis
2h 28m
DEN8:37 pmDenver Intl

United Airlines flights from Colorado to St. Louis

Our best United Airlines deals on Colorado to St. Louis flight tickets
United Airlines
Feb 27
DEN7:47 amDenver Intl
5h 49m
1 stop
STL2:36 pmLambert-St Louis
Mar 5
STL4:39 pmLambert-St Louis
2h 36m
DEN6:15 pmDenver Intl
United Airlines
Jan 26
DEN9:40 amDenver Intl
2h 08m
STL12:48 pmLambert-St Louis
Jan 31
STL8:27 amLambert-St Louis
2h 38m
DEN10:05 amDenver Intl
United Airlines
Dec 19
DEN7:10 pmDenver Intl
2h 06m
STL10:16 pmLambert-St Louis
Dec 24
STL4:43 pmLambert-St Louis
2h 37m
DEN6:20 pmDenver Intl

See travel insights to St. Louis from

How to get the cheapest flight ticket from Colorado to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, January is the cheapest month to fly from Colorado to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $150. The month of May is another great option to travel to St. Louis, with average flight prices from Colorado averaging around $159.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $158. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $232. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Colorado in the evening is the least expensive time of day to depart. momondo users have found prices as low as $158 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $308 per ticket.

What is the cheapest Colorado to Lambert-St Louis flight route?

Fly from Denver Intl to Lambert-St Louis for the best Colorado - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

The best time to book a flight to St. Louis from Colorado is 58 days out, which is when prices tend to be around $182. In the past 72 hours, momondo users found flights from Colorado to St. Louis for as low as $100.

What cabin class options are available on Colorado to Lambert-St Louis flights?

There are 4 cabin classes available to choose from on Colorado to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Colorado to St. Louis flights?

You could potentially save up to 89% on your flight if you consider stops on a Colorado to St. Louis flight.

Cheap Colorado to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to St. Louis

Best Price Found

$33

Fastest flight time

1h 58m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Colorado in the past 72 hours is $33. The best round-trip flight deal from Colorado to St. Louis found on momondo in the last 72 hours is $67.
The fastest flight from Colorado to St. Louis takes 1h 58m
Direct flights go from Colorado to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • When did momondo last update prices for flights from Colorado to Lambert-St Louis Airport?

    Prices for flights from Colorado to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Colorado to Lambert-St Louis Airport?

  • How old do you have to be to fly from Colorado to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Colorado to St. Louis?


Best airlines flying from Colorado to St. Louis

Compare and see reviews for airlines that fly from Colorado to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $51Free CancellationRating
6.1
3,536 reviews
Search Frontier flights
SouthwestPriceFrom $140Free CancellationRating
8.1
5,005 reviews
Search Southwest flights
United AirlinesPriceFrom $149Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
American AirlinesPriceFrom $212Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to St. Louis?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Colorado.

Can I find flights from Colorado to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis from Colorado on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Colorado to St. Louis?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Colorado.

I’m not ready to book a flight from Colorado to St. Louis right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Colorado to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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