Cheap flights from Denver to St. Louis (DEN - STL)

DEN — STL
Jan 31 — Feb 71

The best prices from Denver Intl to Lambert-St Louis are usually found in January or September, booked 25 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

How to find the cheapest flight from Denver (DEN) to St. Louis (STL)

All the information you need to plan the best DEN to STL flight in 2023: compare Denver to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.

DEN - STL

Price

$160 - $258

STL

Temperature

32 - 80.6 °F

STL

Rainfall

2.2 - 4.7 inches

Popular inDecemberHigh demand for flights, 20% potential price rise
Cheapest inJanuaryBest time to find cheap flights, 23% potential price drop
Round-trip from$160From Denver Intl to Lambert-St Louis
One-way from$89One-way flight from Denver Intl to Lambert-St Louis

What is the cheapest day to fly round-trip from Denver to St. Louis?

Users have found that flying from Denver to St. Louis on a Monday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

Users have found that booking a flight from Denver to St. Louis at least 25 days early can save you up to 22% on average compared to booking a flight this week. If booking 25 days before your flight isn’t an option for you, users have found flights from Denver to St. Louis for as little as $210 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $255 for flights departing within the next 3 days.

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

Flights from Denver to St. Louis lean towards being more expensive in December. Prices are generally better when you fly from Denver to St. Louis in January, with the cheapest ticket starting at $99.

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

It’s optimal to fly from Denver to St. Louis in the morning. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight in the evening.

Cheap flights from Denver to St. Louis in January, February 2023

The best prices found for DEN to STL flights for January, February
Feb 28 - Mar 7
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 11m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 28m
$40

Frontier

Pick Dates

Deal found 1/24

Feb 21 - Feb 28
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 08m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 28m
$50

Frontier

Pick Dates

Deal found 1/25

Feb 15 - Feb 21
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 34m
$60

Frontier

Pick Dates

Deal found 1/23

Denver to St. Louis 2023 flight deals

Cheap flights to St. Louis from Denver found for this year
Mar 1 - Mar 7
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 06m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 28m
$40

Frontier

Pick Dates

Deal found 1/25

Mar 4 - Mar 8
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 06m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 32m
$50

Frontier

Pick Dates

Deal found 1/24

Feb 15 - Feb 21
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 34m
$60

Frontier

Pick Dates

Deal found 1/23

Cheap Frontier flights from Denver to St. Louis

Mar 1 - Mar 7
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 06m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 28m
$40

Frontier

Pick Dates

Deal found 1/25

Mar 4 - Mar 8
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 06m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 32m
$50

Frontier

Pick Dates

Deal found 1/24

Feb 15 - Feb 21
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 34m
$60

Frontier

Pick Dates

Deal found 1/23

Non-stop flights to St. Louis from Denver

Save time with Denver to St. Louis direct flight deals
Mar 1 - Mar 7
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 06m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 28m
$40

Frontier

Pick Dates

Deal found 1/25

Mar 4 - Mar 8
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 06m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 32m
$50

Frontier

Pick Dates

Deal found 1/24

Feb 15 - Feb 21
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 34m
$60

Frontier

Pick Dates

Deal found 1/23

Last minute flights from Denver to St. Louis

Late deals on return flights to St. Louis from Denver, departing today and this week
Feb 1 - Feb 4
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 38m
$85

Frontier

Pick Dates

Deal found 1/23

Feb 1 - Feb 6
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 38m
$90

Frontier

Pick Dates

Deal found 1/23

Feb 3 - Feb 4
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 07m
STL

Lambert-St Louis

DEN

Denver Intl

Nonstop

2h 38m
$98

Frontier

Pick Dates

Deal found 1/23

One-way flights to St. Louis from Denver

The cheapest one-way flights from Denver to St. Louis
Feb 28
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 11m
$20

Frontier

Pick Dates

Deal found 1/24

Feb 28
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 11m
$21

Frontier

Pick Dates

Deal found 1/23

Feb 22
DEN

Denver Intl

STL

Lambert-St Louis

Nonstop

2h 06m
$31

Frontier

Pick Dates

Deal found 1/23

Reviews of Airlines Servicing St. Louis

Delta
7.9
Good
1,998 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.8

Boarding

8.0

Crew

8.5

Food

7.2

Reviews

1 / 10

Better earphone for listing to tv, everything else was great..

Delta
7.9
Good
1,998 reviews
Delta
7.9
Good
1,998 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.8

Boarding

8.0

Crew

8.5

Food

7.2

Reviews

1 / 10

Better earphone for listing to tv, everything else was great..

United Airlines
7.6
Good
1,147 reviews
Delta
7.9
Good
1,998 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.8

Boarding

8.0

Crew

8.5

Food

7.2

Reviews

1 / 10

Better earphone for listing to tv, everything else was great..

American Airlines
7.4
Good
1,666 reviews
Delta
7.9
Good
1,998 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.8

Boarding

8.0

Crew

8.5

Food

7.2

Reviews

1 / 10

Better earphone for listing to tv, everything else was great..

Spirit Airlines
6.9
Okay
708 reviews
Delta
7.9
Good
1,998 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.8

Boarding

8.0

Crew

8.5

Food

7.2

Reviews

1 / 10

Better earphone for listing to tv, everything else was great..

Frontier
6.1
Okay
536 reviews
Delta
7.9
Good
1,998 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.8

Boarding

8.0

Crew

8.5

Food

7.2

Reviews

1 / 10

Better earphone for listing to tv, everything else was great..

Related info for your journey

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

What airports do I use to fly from Denver to St. Louis?

To fly from Denver to St. Louis, you need to book a flight from Denver Intl (DEN) to Lambert-St Louis (STL). Nonstop flights to Lambert-St Louis from Denver Intl take 1h 54m on average. When it comes time to book airfare, you have a few options: there are 12 outbound flights from Denver Intl to Lambert-St Louis offered by 8 different airlines.

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

Some of the carriers operating flights from Denver Intl to Lambert-St Louis that may be offering flexible cancellation policies are Frontier, United Airlines, and Juneyao Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

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

Yes, there are multiple flights from Denver to St. Louis for under $100. The cheapest flight booked recently is on Frontier for just $40, but on average you can expect to pay $81.

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

Cheapflights has at least 20 direct flights from Denver to St. Louis under $100. A good price for a nonstop flight from Denver to St. Louis is less than $81.

Are there last-minute flights available from Denver to St. Louis for under $100?

There are currently 20+ open flights from Denver to St. Louis within the next 7 days for less than $100.

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

Nonstop flights are available for this route on the following days: Saturday.

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

Within the past month, 24 users have taken a look at flights from Denver Intl to Lambert-St Louis.

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

On average 1 flight departs from Denver to St. Louis per day.
Afternoon (Noon - 6pm) - 100% of flight departures

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

A quick flight from Denver to St. Louis can take about 2h 06m. Frontier provides one of the quickest options available for as low as $40. The distance from Denver to St. Louis is about 772 mi. Most flights are nonstop.

What is the cheapest airline to fly from Denver to St. Louis round-trip?

Our cheapest airline available from Denver to St. Louis is Frontier. Our recent data shows that you can find tickets from as low as $40 on this airline. Frontier is currently priced 80% below the average price you’ll pay for this route.

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

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $20. Users have also found prices from $63 and $89 on Spirit Airlines and American Airlines, respectively.

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

Consider Undisclosed Carrier, American Airlines or Alaska Airlines when booking your flight. These represent the most popular airlines when flying from Denver to St. Louis.

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to St. Louis on time: Frontier (85%), United Airlines (79%), SkyWest Airlines (79%).

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

While on average a flight from Denver to St. Louis is generally $376, our data shows the cheapest flight currently is $34. When looking at the most popular route, (Denver Intl - Lambert-St Louis), you can expect to pay $89 for that flight.

Alternative routes for Denver to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Denver to St. Louis

The chart below displays the airlines Cheapflights users traveling from Denver 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$65Average$184FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
United AirlinesCheapest$126Average$342FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
DeltaCheapest$180Average$385FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
American AirlinesCheapest$421Average$623FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights

Hourly flight availability from Denver to St. Louis

See what time of day planes typically take off from Denver to St. Louis
6%of flight departuresEarly morningMidnight to 6 am
36%of flight departuresMorning6 am to noon
53%of flight departuresAfternoonNoon to 6 pm
5%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Denver to St. Louis

See how many times per day planes take to the skies headed from Denver to St. Louis
Sunday7daily flights
Monday15daily flights
Tuesday14daily flights
Wednesday15daily flights
Thursday15daily flights
Friday15daily flights
Saturday7daily flights
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