Cheap flights from St. Louis to Denver from $43
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Denver departing on 8/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Deals available from 900+ travel sites.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Easily compare round-trip flights from St. Louis to Denver
Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from St. Louis to Denver by changing tabs
Find the cheapest one-way flights from St. Louis to Denver
If you're looking for one-way flights from St. Louis to Denver, view some of our deals below provided by Delta and Frontier
Find the cheapest direct flights from St. Louis to Denver
Search last-minute flights to Denver from St. Louis
Find and compare round-trip flight prices for your last-minute flight from St. Louis to Denver
Frontier flights from St. Louis to Denver
Our best Frontier deals on St. Louis to Denver flight tickets
United Airlines flights from St. Louis to Denver
Our best United Airlines deals on St. Louis to Denver flight tickets
How to get the cheapest flight ticket from St. Louis to Denver
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 from St. Louis to Denver?
October. The cheapest time of year to fly to Denver from St. Louis is October. Most expensive is December
What is the cheapest day to depart St. Louis for Denver?
Tuesday. The cheapest day of the week is typically Tuesday. The most expensive is typically Sunday
When is the cheapest time to fly from St. Louis to Denver?
In the evening. St. Louis to Denver flights are approximately 62% more expensive at noon than in the evening
What is the cheapest airline that flies to Denver from St. Louis?
Frontier. Frontier, Delta, and American Airlines are the most popular carriers operating from St. Louis to Denver
What is the cheapest St. Louis to Denver flight route?
Lambert-St Louis - Denver Intl. Fly from Lambert-St Louis to Denver Intl for the best St. Louis - Denver flight prices
How far in advance should you book St. Louis to Denver flights?
23 days before. The cheapest time to buy a flight from St. Louis to Denver is approximately 23 days to departure
How many flights depart from St. Louis to Denver on average per day?
As of July 2024, there are 18 flights per week flying from St. Louis to Denver. The most common time of day flights depart is 4:00PM, with 49% of flights taking off in the afternoon.
How many flights depart from St. Louis to Denver on average per week?
129 flights are operational weekly from St. Louis to Denver as of July 2024. The most popular departure day for this route is Monday, with 17% of flights per week taking off on this day.
What cabin class options are available on St. Louis to Denver flights?
There are 2 cabin classes available to choose from on St. Louis to Denver 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 St. Louis to Denver flights?
No. A direct flight is the cheapest option for a flight between St. Louis to Denver.
How have St. Louis to Denver flight prices changed over time?
As of July 2024, prices for St. Louis to Denver flights are approximately 38% cheaper when compared to flights at the same time last year.
Cheap St. Louis to Denver (STL to DEN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Denver
How far is Lambert-St Louis to Denver Intl by plane?
The straight-line distance from Lambert-St Louis to Denver Intl is 794.2 mi. Typically, this will take 2h 15m by plane in normal conditions.
When did momondo last update prices for flights from Lambert-St Louis Airport to Denver Intl Airport?
Prices for flights from Lambert-St Louis Airport to Denver Intl Airport were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Denver Intl Airport?
As of July 2024, there are 4 operators available to choose from for flights from Lambert-St Louis Airport to Denver Intl Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Denver Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The necessary travel and health documents for your Denver Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
Best airlines flying from St. Louis to Denver
Compare and see reviews for airlines that fly from St. Louis to Denver with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $38 | Free Cancellation | Rating 6.2 3,835 reviews | |||
| PriceFrom $124 | Free Cancellation | Rating 7.4 10,000 reviews | |||
| PriceFrom $179 | Free Cancellation | Rating 8.0 9,630 reviews | |||
| PriceFrom $192 | Free Cancellation | Rating 7.3 10,000 reviews |
United Airlines Flights From St. Louis to Denver
The lowest priced United Airlines flight from St. Louis to Denver from the last 72 hours was $124. Generally, United Airlines has 26 flights on this route every week with an average price of $297. United Airlines is rated 7.4/10 by our users.
Frontier Flights From St. Louis to Denver
Across 3,835 Frontier reviews on momondo, the average score is 6.2/10. Frontier flies from St. Louis to Denver about 4 times each week, with ticket deals ranging from $38 to $108. Price data is based on momondo searches in the last 72 hours.
Why use momondo?
Why should I use momondo to find a flight deal from St. Louis to Denver?
Finding the right flight to Denver from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Denver quick and easy, saving you time and money.
Can I find flights from St. Louis to Denver with flexible booking policies on momondo?
momondo does allow users to show only those flights to Denver from St. Louis which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from St. Louis to Denver?
momondo provides multiple filters to help you find the best flight to Denver from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from St. Louis to Denver right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of St. Louis to Denver flights. All you need is a valid email address and we will do the rest; it is that quick and easy.