Cheap flights from Denver to St. Louis from $115

If you don’t have specific dates for your trip between Denver and St. Louis, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between Denver and St. Louis, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around Denver. The main one is Denver International and other nearby airports include Colorado Springs, Eagle County Regional, Pueblo Memorial, Cheyenne Regional, Laramie Regional

There are a number of airports in and around St. Louis. The main one is St. Louis Lambert International and other nearby airports include St. Louis Lambert International, General Wayne A. Downing Peoria International, Columbia Regional, Evansville Regional, MidAmerica St. Louis, Central Illinois Regional, Abraham Lincoln Capital, Cape Girardeau Regional, Waynesville-St. Robert Regional, Williamson County Regional.

This depends on the airline’s flight schedule. You can easily select your preferred departure time when you search on our website or mobile app. Choose the time of day you wish to depart from Denver, such as morning, afternoon, evening, or night, or select the exact hours for departure.

This depends on the airline’s flight schedule. You can easily select your preferred arrival time when you search on our website or mobile app. Choose the time of day you wish to arrive at St. Louis, such as morning, afternoon, evening, or night, or select the exact hours for arrival.

This depends on the airline’s flight schedule. You can easily select your preferred departure time when you search on our website or mobile app. Choose the time of day you wish to depart from Denver, such as morning, afternoon, evening, or night, or select the exact hours for departure.

This depends on the airline’s flight schedule. You can easily select your preferred arrival time when you search on our website or mobile app. Choose the time of day you wish to arrive at St. Louis, such as morning, afternoon, evening, or night, or select the exact hours for arrival.