Q: Can I fly back to Denver Intl from Lambert-St Louis?

Returning to Denver Intl from Lambert-St Louis COVID-19 testing requirements Visitors from Lambert-St Louis are not required to present a negative COVID-19 PCR test or antigen result upon entering Denver Intl. Quarantine requirements Visitors from Lambert-St Louis are not required to quarantine after entering Denver Intl.

Question 1

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

Accepted Answer

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

Question 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

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

Question 4

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

Accepted Answer

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.

Question 5

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

Accepted Answer

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.

Question 6

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

Accepted Answer

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.

Question 7

Can I fly to Lambert-St Louis from Denver Intl right now?

Accepted Answer

Information is based on travel restrictions for travel to Lambert-St Louis within the United States

Most visitors from Denver Intl need to provide a negative COVID-19 test result and/or quarantine to enter Lambert-St Louis.

COVID-19 testing requirements
Visitors from Denver Intl are not required to present a negative COVID-19 PCR test or antigen result upon entering Lambert-St Louis.

Quarantine requirements
Visitors from Denver Intl are not required to quarantine after entering Lambert-St Louis.

Documents
Passenger Disclosure and Attestation - To be filled out by travelers from the People’s Republic of China and designated airports including Incheon International Airport (ICN) in Seoul, the Republic of Korea; Toronto Pearson International Airport (YYZ) in Canada; and Vancouver International Airport (YVR) in Canada.

Question 8

Can I fly back to Denver Intl from Lambert-St Louis?

Accepted Answer

Returning to Denver Intl from Lambert-St Louis

COVID-19 testing requirements
Visitors from Lambert-St Louis are not required to present a negative COVID-19 PCR test or antigen result upon entering Denver Intl.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Denver Intl.

Question 9

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

Accepted Answer

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.

Question 10

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

Accepted Answer

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.

Question 11

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

Accepted Answer

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%).

Question 12

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

Accepted Answer

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.

Question 13

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

Accepted Answer

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.

Question 14

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

Accepted Answer

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

Question 15

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

Accepted Answer

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.

Question 16

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

Accepted Answer

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.

Question 17

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

Accepted Answer

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.

Question 18

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

Accepted Answer

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.

Question 19

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

Accepted Answer

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.

Question 20

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

Accepted Answer

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.

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

Airline	Cheapest	Average	Flexibility	On-time	COVID-19 safety
Juneyao Airlines	Cheapest$15	Average$22	FlexibilityNo cancel fee	On-time66%	COVID-19 safety	Search Juneyao Airlines flights
Frontier	Cheapest$65	Average$184	FlexibilityNo cancel fee	On-time62%	COVID-19 safety	Search Frontier flights
United Airlines	Cheapest$126	Average$342	FlexibilityNo cancel fee	On-time69%	COVID-19 safety	Search United Airlines flights
Delta	Cheapest$180	Average$385	FlexibilityNo cancel fee	On-timeN/A	COVID-19 safety	Search Delta flights
American Airlines	Cheapest$421	Average$623	FlexibilityNo cancel fee	On-time71%	COVID-19 safety	Search American Airlines flights

6%of flight departures	Early morningMidnight to 6 am
36%of flight departures	Morning6 am to noon
53%of flight departures	AfternoonNoon to 6 pm
5%of flight departures	Evening6 pm to midnight

Sunday	7daily flights
Monday	15daily flights
Tuesday	14daily flights
Wednesday	15daily flights
Thursday	15daily flights
Friday	15daily flights
Saturday	7daily flights

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

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.

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

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

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

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

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

The best prices found for DEN to STL flights for January, February

Denver to St. Louis 2023 flight deals

Cheap flights to St. Louis from Denver found for this year

Cheap Frontier flights from Denver to St. Louis

Non-stop flights to St. Louis from Denver

Save time with Denver to St. Louis direct flight deals

Last minute flights from Denver to St. Louis

Late deals on return flights to St. Louis from Denver, departing today and this week

One-way flights to St. Louis from Denver

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

Reviews of Airlines Servicing St. Louis

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?

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

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

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

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

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

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

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

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

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

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

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

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

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

Other flights from Denver

Other flights to St. Louis

Flights to St. Louis from Denver

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COVID Restrictions

Can I fly to Lambert-St Louis from Denver Intl right now?

Can I fly back to Denver Intl from Lambert-St Louis?

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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.

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Hourly flight availability from Denver to St. Louis

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Weekly flight availability from Denver to St. Louis

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