Denver to St Louis Flight Route Information
| Travel Distance: | 768 Miles |
|---|---|
| Airlines Flying This Route: | Frontier Airlines, United Airlines, Southwest Airlines |
| Weekly Flights: | 97 |
| Avg. Flight Duration: | 02.20 Hours |
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10/24/2026 Find Cheap Flights from Denver to St Louis (DEN to STL)
DEN - Denver STL - St Louis 
Find Cheap Flights from Denver to St Louis (DEN to STL)
Fares Starting from $56
DEN - Denver STL - St Louis Great deal! This is the lowest price we've seen for this one way route in the last 12 hours. Prices may change and aren't guaranteed for all flights or dates. Click on the price to continue your search and check the latest available fare. Ref. id 202609~Ref:z2oFWhuOLEquU35YhT5YrQ
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Cheap Flights from Denver to St Louis - Compare & Book Our Best Deals
With over 12 daily departures from Denver to St Louis, this route offers great flexibility for different travel plans. Browse one-way fares from $55.99, round-trip fares from $101.98, and other affordable options across different budgets. Compare flight choices, explore schedules, and book the best Denver to St Louis deals that fit your budget and travel preferences.
Top Airlines that fly from Denver to St Louis
Cheap Flight Deals from Denver to St Louis
DEN Denver Sat, Oct 24
STL St Louis
from $56
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DEN Denver Wed, Oct 28
STL St Louis
from $56
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DEN Denver Thu, Nov 19
STL St Louis
from $56
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DEN Denver Mon, Nov 23
STL St Louis
from $68
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DEN Denver Wed, Oct 21
STL St Louis
from $73
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DEN Denver Sat, Dec 5
STL St Louis
from $73
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DEN Denver Wed, Jan 27
STL St Louis
from $73
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DEN Denver Sat, Nov 14
STL St Louis
from $73
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DEN Denver Sat, Nov 21
STL St Louis
from $98
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DEN Denver Thu, Nov 26
STL St Louis
from $98
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*All fares above were last found on: Fares are one way/round trip. Fares incl. all fuel surcharges, taxes & fees and our service fees. Displayed fares are subject to change and cannot be guaranteed at the time of booking. See all booking terms and conditions. 202609~Ref:z2oFWhuOLEquU35YhT5YrQ
Insights about cheap flights from Denver to St Louis – Direct Flights, Duration & Best Travel Time
When it comes to booking cheap flights, having the right information at your fingertips can make all the difference. Dive into the insights for cheap flights from Denver to St Louis and enhance your travel experience!
Daily Flights
12
Cheapest Month
April
Avg. Flight Duration
02.20
Peak Season
August
Distance
768 miles
Direct Flights
389
When is the Cheapest Time to Book Flights from DEN to STL?
Explore data-powered insights and trends for flights from Denver to St Louis. Discover average fares, cheap months to fly, when to book, and plan smarter.
What’s the cheapest day of the week to fly from Denver to St Louis?‡
What is the cheapest month to fly from Denver to St Louis?‡
‡This information is based on historical data from the last 365 days.
Finding Affordable Flights from Denver to St Louis
- Plan Ahead - One of the keys to securing cheap flights from Denver to St Louis is to plan your trip well in advance. Airlines often offer lower prices for those who book tickets months ahead. Keep an eye on special promotions and sales events, which can yield significant savings.
- Flexibility is Key - Being flexible with your travel dates can also lead to substantial cost savings. Consider flying during off-peak seasons or on weekdays when prices tend to be lower.
- Set Price Alerts - To keep tabs on flight prices, consider setting up fare alerts. These alerts will notify you when fares from Denver to St Louis drop, giving you the opportunity to grab cheap deals.
- Consider Nearby Airports - If St Louis has multiple airports, check the prices at each one. Sometimes, flying into a nearby airport and then taking a short train or bus ride to your destination can be a much cheaper option.
- Bundle and Save - Booking your flight and accommodation together as a package can often result in significant savings. CheapOair offers these bundled deals, so make sure to explore this option.
When should I book flights from DEN to STL? ‡
‡Got flexible travel dates? Use our flight data from the past year to discover ideal time to fly from Denver to St Louis. Find out which months and days typically offer lower fares and let CheapOair search for the best options.
CheapOair provides the predicted prices for one-way trips or round-trips with a duration of 7 days for domestic and 14 days for international trips based on historical data and available flight information. Graphs are estimates only. Prices are subject to change and can't be guaranteed until ticketed.
Estimated price for
Round-trip
‡Graphs are estimates only. Based on historical data and available flight information. Prices are subject to change and cannot be guaranteed until ticketed.
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Insights About Flying from Denver to St Louis
Which is the high season to travel from Denver to St Louis?
The month of August is considered the high season for flying from DEN to STL. Traveling during the high season can affect ticket prices and availability, making this data crucial for trip planning.
How many direct flights are available from DEN to STL?
There are a total of 389 direct flights from Denver to St Louis. For travelers seeking convenience and shorter travel times, this data is important when choosing flight options.
Which is the low season to travel from Denver to St Louis?
April is considered the low season for traveling from Denver to St Louis, Missouri. Travelers looking for cost-effective options and fewer crowds may consider traveling during this period.
How many daily flights are there between Denver to St Louis?
There are as many as 12 daily flights available for travelers between DEN to STL. This data offers flexibility in choosing departure times that best suit your schedule.
Which is the busiest day for passengers flying between Denver to St Louis?
Monday are the busiest days for passengers flying between Denver to St Louis. Knowing the peak travel day can help you plan your trip to avoid overcrowded flights or airports.
What percentage of travelers spent an average of 1 days in St Louis, Missouri?
Approximately 41.15% of travelers spent an average of 1 days exploring St Louis. This information can assist in planning the duration of your stay in St Louis
What percentage of DEN to STL flyers traveled with kids under 14?
About 5% of passengers on flights from Denver to St Louis were accompanied by children under the age of 14. This information is useful if you're planning a family trip and want to know how common it is to travel with young children on this route.
What percentage of Denver to St Louis travelers were over 60 years old?
A notable 16% of travelers were aged 60 or older. This statistic provides insights for senior travelers or those seeking a mature travel demographic.
What percentage of DEN to STL travelers were millennials?
Millennials make up a significant portion of travelers on this route, accounting for 41% of all passengers. If you're a millennial looking to connect with like-minded travelers, this statistic might interest you.
What percentage of Denver to St Louis travelers were female?
Almost half of the passengers, approximately 51% were female. Knowing the gender distribution can be useful for solo female travelers or those interested in gender-related travel insights.
What percent of Denver to St Louis travellers booked first or business class?
10% of travelers booked first or business class on this route.
At what time the earliest flight departs from Denver?
The earliest flight departs at 7:00AM - 8:00AM.
On which days one can have the most flight options in St Louis?
Monday offer the most flight options in St Louis.
§
All flight facts are based on last 3 months' data except the highest and lowest booking months that are based on last 3 months' data.
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Cheap Flights from Denver to St Louis
Looking for flights from Denver to St Louis? Look no more, for you�re at the right place. Book cheap flights from Denver to St. Louis on CheapOair and enjoy great discounts. Whether its leisure or a business trip, we offer the most competitive rates on flight tickets to destinations around the world. Grab DEN to STL flight deals on CheapOair and save big! Hurry, our cheap rates are not going to last forever, so make your bookings right away!
Airports in Denver
The city of Denver is served by Denver International Airport, also known as DIA. The Denver International Airport is the 6th busiest airport in terms of passenger traffic in the U.S.A. Also, it is the largest airport in the country by total land area. Owned & operated by City & County of Denver Department of Aviation, the airport is a hub for Frontier airlines, Great Lakes Airlines, and United airlines. It also serves as a focus city for Southwest Airlines. The airport offers passenger & cargo services to both domestic and international destinations like Cancun, Toronto, Frankfurt, Calgary, London, San Jose, Tokyo, Zurich, Dallas, San Francisco, Phoenix, Salt Lake City, and more. Passengers can easily commute from & to the airport using charter buses, commuter rail, hotel shuttles, limousines, mountain carriers, public buses, shared-ride services, taxicabs, and mobile app services.
Explore St. Louis
With its cache of vibrant museums, gardens, parks and breweries, you will find plenty of reasons to meet in St. Louis. Family-oriented travelers will likely venture to Forest Park for a Saint Louis Zoo visit. Others will savor complimentary drinks at the Anheuser-Busch Brewery before embarking on a pub crawl around The Loop. Wherever you start your expedition, save time to marvel at the iconic stainless- steel Gateway Arch rising from the heart of this Midwestern city. St. Louis, the largest city in Missouri, lies just below the junction of the Missouri and Mississippi Rivers, which here forms the boundary between Missouri and Illinois. The city has long been known as the �Gateway to the West� because it was from here that the Europeans set out to conquer the Wild West. It is home to St. Louis University, the oldest university west of the Mississippi, which was founded in 1818. The city�s connection with Scott Joplin, �the father of Ragtime� ensures its fame as a music city.
Things to Do in St. Louis
Magic House Museum
Located in a three-story Victorian home, the Magic House Museum provides hands-on exhibits about science, communications, and computers. Exhibits are divided into themed areas and encourage engagement from children. Each area is designed to enhance curiosity and experimentation. There is a designated play area for babies and toddlers, as well as the Calming Corner, a room filled with activities
and toys that are soothing, which is a haven for children who need a break from sensory overload. The museum cafe specializes in healthy fresh-food options; many of the ingredients are grown on-site.
City Museum
The City Museum, housed in a former shoe factory, is a delightfully entertaining facility that both children and adults will appreciate. Exhibits include a giant aquarium, architectural museum, art activities, participatory circus, and oddities, among many others. The museum�s major structures and installations were made entirely of materials found within the St. Louis municipal area. The building itself is an impressive piece of architecture, and its design is the brainchild of sculptor and artist Bob Cassilly.
Campbell House Museum
Built in 1851, this 3-story townhouse has been accurately restored with its carriage house, rose garden, and gazebo, offers a showcase of Victorian furnishings and decorative arts. Campbell House Museum features original furnishings from the family who lived here from 1854 through 1938. The museum collection includes classic Rococo-Revival Victorian furniture, portraits, textiles, silver, gold-leaf frames and cornices, faux-grained woodwork, and other examples of decorative arts.
Best Time to Fly to St. Louis
The best times to visit St. Louis are the months of April and May and months of September through October. St. Louis experiences long, hot summers and long, cold winters. The short seasons of spring and fall, which offer plenty of convivial events and nice temperatures, make for the most enjoyable visits.
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