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

Flight FAQs

From Denver to St. Louis

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 59m on average. When it comes time to book airfare, you have a few options: there are 13 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 Major Airline. 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 $200 on Cheapflights?

Yes, there are multiple flights from Denver to St. Louis for under $200. The cheapest flight booked recently is on Frontier for just $170, but on average you can expect to pay $219.

Are there nonstop flights from Denver to St. Louis for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Denver to St. Louis under $200. A good price for a nonstop flight from Denver to St. Louis is less than $232.

Are there last-minute flights available from Denver to St. Louis for under $200?

There are currently 20+ open flights from Denver to St. Louis within the next 7 days for less than $200.

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

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

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

Within the past month, 27 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.
Early Morning (Midnight to 6am) - 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 05m. Frontier provides one of the quickest options available for as low as $170. The distance from Denver to St. Louis is about 772 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying 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 $170 on this airline. An additional option worth looking into is Spirit Airlines, starting at $238.

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 $77. Users have also found prices from $118 and $134 on American Airlines and Spirit Airlines, respectively.

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

While on average a flight from Denver to St. Louis is generally $406, our data shows the cheapest flight currently is $49. When looking at the most popular route, (Denver Intl - Lambert-St Louis), you can expect to pay $230 for that flight.

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 (84%), Air Canada (82%), SkyWest Airlines (80%).

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

Consider Major Airline, American Airlines or Delta when booking your flight. These represent the most popular airlines when flying from Denver to St. Louis.