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

Flight FAQs

From St Louis to Denver

Are flight prices decreasing from St Louis to Denver due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both St Louis and Denver for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Lambert-St Louis to Denver Intl to control the spread of COVID-19?

Delta is one of the many airlines that have implemented additional safety measures to control the spread of COVID-19. New policies for travelers booking flights from Lambert-St Louis to Denver Intl include masks being provided and required on board, daily cleaning and sanitization, use of HEPA filters, pre-flight testing for antibodies and symptoms, and socially distanced seating (for a limited time). Keep in mind that policies will vary by airline.

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

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

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

Yes, there are multiple flights from St Louis to Denver for under $100. The cheapest flight booked recently is on Frontier for just $54, but on average you can expect to pay $77.

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

Cheapflights has at least 20 direct flights from St Louis to Denver under $100. A good price for a nonstop flight from St Louis to Denver is less than $77.

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

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

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

Nonstop flights can be found on the following days: Wednesday.

How popular is this flight route?

Flights from Lambert-St Louis to Denver Intl have been viewed 358 times in the past calendar month.

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

On average 1 flight departs from Lambert-St Louis to Denver Intl per day.
Evening (6pm - Midnight) - 100% of flight departures

Does it rain more in St Louis or Denver?

When traveling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in St Louis is roughly greater than that of Denver. You can assume this to be the case over the next 15 days.

Is St Louis weather warmer or cooler than Denver?

Temperatures around the 90 °F's can be experienced in July. The weather in Denver is the same as in St Louis. Plan for potential changes in flight availability as peak weather approaches in this location.

How long is the flight from St Louis to Denver?

Departing from St Louis to Denver will take you 2h 28m. The distance between St Louis and Denver is about 772 mi. Most flights are nonstop.

What are the cheapest airlines flying from St Louis to Denver round-trip?

Frontier, at $54, was found to be the cheapest airline from St Louis to Denver. An alternate airline flying to your destination would be United Airlines. You may be able to fly from St Louis to Denver for 66% less than the average price by searching for these airlines.

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

The cheapest airlines for a one-way flight from St Louis to Denver are Frontier ($27), United Airlines ($49), and American Airlines ($64).