Cheap flights from Colorado to St. Louis (STL)

DEN — STL
Oct 4 — Oct 111

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

To save up to 19% on this flight, we recommend booking at least 23 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Colorado to St. Louis from $197 1-2 weeks out and tickets from $238 for flights departing within the next 72 hours.

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

Our data shows that October tends to be the cheapest month to fly to St. Louis from Colorado. Users have commonly found prices around $200 for the month, but tickets can be as low as $73. Due to multiple factors, prepare for potentially higher prices in June.

When is the cheapest time to fly from Colorado to St. Louis (CO - STL)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to St. Louis as you normally would.

Cheap flights from Colorado to St. Louis in September, October 2022

The best prices found for Colorado to STL flights for September, October
Oct 22 - Oct 29
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 29m
$79

Frontier

Pick Dates

Deal found 9/26/22

Oct 26 - Nov 2
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 29m
$80

Frontier

Pick Dates

Deal found 9/26/22

Oct 19 - Oct 25
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 29m
$81

Frontier

Pick Dates

Deal found 9/29/22

Colorado to St. Louis 2022 flight deals

Cheap flights to St. Louis from Colorado found for this year
Oct 22 - Oct 29
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 29m
$79

Frontier

Pick Dates

Deal found 9/26/22

Oct 26 - Nov 2
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 29m
$80

Frontier

Pick Dates

Deal found 9/26/22

Oct 19 - Oct 25
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 29m
$81

Frontier

Pick Dates

Deal found 9/29/22

Cheap Frontier flights from Colorado to St. Louis

Oct 22 - Oct 29
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 29m
$79

Frontier

Pick Dates

Deal found 9/26/22

Oct 26 - Nov 2
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 29m
$80

Frontier

Pick Dates

Deal found 9/26/22

Oct 19 - Oct 25
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 29m
$81

Frontier

Pick Dates

Deal found 9/29/22

Cheap American Airlines flights from Colorado to St. Louis

Nov 8 - Nov 15
GJT

Grand Junction Regnl

STL

Lambert-St Louis

1 stop

4h 38m
STL

Lambert-St Louis

GJT

Grand Junction Regnl

2 stops

12h 12m
$344

American Airlines

Pick Dates

Deal found 9/26/22

Oct 28 - Nov 5
GJT

Grand Junction Regnl

STL

Lambert-St Louis

1 stop

6h 10m
STL

Lambert-St Louis

GJT

Grand Junction Regnl

2 stops

8h 12m
$364

American Airlines

Pick Dates

Deal found 9/26/22

Nov 4 - Nov 12
GJT

Grand Junction Regnl

STL

Lambert-St Louis

1 stop

5h 12m
STL

Lambert-St Louis

GJT

Grand Junction Regnl

2 stops

11h 16m
$384

American Airlines

Pick Dates

Deal found 9/26/22

Non-stop flights to St. Louis from Colorado

Save time with Colorado to St. Louis direct flight deals
Oct 22 - Oct 29
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 29m
$79

Frontier

Pick Dates

Deal found 9/26/22

Oct 26 - Nov 2
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 29m
$80

Frontier

Pick Dates

Deal found 9/26/22

Oct 19 - Oct 25
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 29m
$81

Frontier

Pick Dates

Deal found 9/29/22

Last minute flights from Colorado to St. Louis

Late deals on return flights to St. Louis from Colorado, departing today and this week
Oct 4 - Oct 27
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 05m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 29m
$109

Frontier

Pick Dates

Deal found 9/27/22

Oct 5 - Oct 5
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

1 stop

7h 24m
$139

Frontier

Pick Dates

Deal found 9/28/22

Oct 5 - Oct 11
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

1 stop

14h 17m
$143

Frontier

Pick Dates

Deal found 9/29/22

One-way flights to St. Louis from Colorado

The cheapest one-way flights from Colorado to St. Louis
Nov 1
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
$30

Frontier

Pick Dates

Deal found 9/28/22

Oct 19
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
$40

Frontier

Pick Dates

Deal found 9/28/22

Oct 27
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
$50

Frontier

Pick Dates

Deal found 9/28/22

Related info for your journey

Useful info, stats and facts about Colorado to St. Louis flights.

What airport do you fly into for flights to St. Louis from Colorado?

For a flight from Colorado to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

Which airlines flying from Colorado to Lambert-St Louis have flexible cancellations due to COVID-19?

Frontier, United Airlines, and American Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Colorado to St. Louis for under $100 on Cheapflights?

Yes, there are multiple flights from Colorado to St. Louis for under $100. The cheapest flight booked recently is on Frontier for just $79, but on average you can expect to pay $111.

Are there nonstop flights from Colorado to St. Louis for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Colorado to St. Louis under $100. A good price for a nonstop flight from Colorado to St. Louis is less than $116.

Are there last-minute flights available from Colorado to St. Louis for under $200?

There are currently 20+ open flights from Colorado to St. Louis within the next 7 days for less than $200.

What days are nonstop flights available from Colorado to St. Louis?

You can find nonstop flights on the following days: Sunday, Thursday, Saturday.

How popular is this Colorado to St. Louis flight route?

This flight path from Colorado to Lambert-St Louis was viewed by 28 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

How many flights depart from Colorado to St. Louis on average per day?

On average 10 flights depart from Colorado to St. Louis per day.
Early Morning (Midnight to 6am) - 10% of flight departures
Morning (6am - Noon) - 50% of flight departures
Afternoon (Noon - 6pm) - 20% of flight departures
Evening (6pm - Midnight) - 20% of flight departures

How long is the flight from Colorado to St. Louis?

Departing from Colorado to St. Louis will take you 2h 07m. Colorado and St. Louis are separated by a distance of 772 mi. Generally, flights for this route are nonstop.

What are the cheapest airlines to fly from Colorado to St. Louis one-way?

The cheapest airlines for a one-way flight from Colorado to St. Louis are Frontier ($30), United Airlines ($88), and Delta ($89).

What are the most popular routes from Colorado to St. Louis?

When deciding which route to take from Colorado to St. Louis consider Denver Intl - Lambert-St Louis, Colorado Springs - Lambert-St Louis or Grand Junction Regnl - Lambert-St Louis as they are the most popular.

What are the most popular airlines that fly from Colorado to St. Louis?

Before booking your flight from Colorado to St. Louis check out the most popular airlines for this route: Undisclosed Carrier, American Airlines or Alaska Airlines.

What are the most reliable airlines from Colorado to St. Louis?

The top 3 most reliable airlines when flying from Colorado to St. Louis are Frontier (84%), SkyWest Airlines (80%) and Air Canada (79%).

What are the cheapest flights from Colorado to St. Louis?

Looking for the cheapest flight from Colorado to St. Louis? While on average our users pay $578, our data indicates the cheapest price to be $50. The most popular route (Denver Intl - Lambert-St Louis), is priced around $109.

Departure points for flights from Colorado to St. Louis

Select to see more specific information for flights to St. Louis from all departure points in Colorado

Top 5 airlines flying from Colorado to St. Louis

The chart below displays the airlines Cheapflights users traveling from Colorado to St. Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$15Average$22FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
FrontierCheapest$64Average$186FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
American AirlinesCheapest$105Average$418FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
DeltaCheapest$107Average$331FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
United AirlinesCheapest$108Average$536FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights

Hourly flight availability from Colorado to St. Louis

See what time of day planes typically take off from Colorado to St. Louis
13%of flight departuresEarly morningMidnight to 6 am
34%of flight departuresMorning6 am to noon
39%of flight departuresAfternoonNoon to 6 pm
14%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM