Cheap flights from Denver to St. Louis

Good to know

Flight information for Denver to St. Louis to help you plan your next trip.
Cheapest round-trip flight $68
Frontier Nonstop 3 hr Nov 9 — Nov 10
The cheapest round-trip flight from Denver to St. Louis is currently $68
Cheapest one-way flight $29
Frontier Nonstop 3 hr Oct 30
The cheapest one-way flight from Denver to St. Louis is currently $29
Fastest flight 1 hr 55 min The fastest nonstop flight from Denver to St. Louis takes 1 hr 55 min
Nonstop flights Every day There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from Denver to St. Louis is typically August. The most expensive one is typically March.
August
Cheapest
Typical prices: $65–165
March
Most expensive
Typical prices: $110–215

Popular airports near Denver

  • Denver International Airport (DEN)
    Denver 38 min 19 mi
  • Colorado Springs Airport (COS)
    Colorado Springs 1 hr 26 min 66 mi
  • Rocky Mountain Metropolitan Airport (Terminal) (BJC)
    Denver 32 min 13 mi
  • Eagle County Regional Airport (EGE)
    Vail 2 hr 17 min 103 mi

Popular airports near St. Louis

  • St. Louis Lambert International Airport (STL)
    St. Louis 22 min 12 mi
  • General Wayne A. Downing Peoria International Airport (PIA)
    Peoria 2 hr 34 min 143 mi
  • Indianapolis International Airport (IND)
    Indianapolis 3 hr 29 min 222 mi
  • Evansville Regional Airport (EVV)
    Evansville 2 hr 32 min 150 mi

Frequently asked questions about flying from Denver to St. Louis

How long does it take to fly from Denver to St. Louis?
1 hr 55 min is the shortest flight time from Denver to St. Louis.
When are the cheapest days to fly from Denver to St. Louis?
The cheapest days to fly are usually in August. Typical prices range from $65 to $165.
Which airlines provide the cheapest flights from Denver to St. Louis?
The best round-trip deal recently found on Google Flights from Denver to St. Louis was with Frontier from $68. The best one-way deal was with Frontier from $29.
When are direct flights from Denver to St. Louis available?
There are direct flights from Denver to St. Louis on a daily basis.
Which airlines have direct flights from Denver to St. Louis?
Southwest, United and Frontier fly direct from Denver to St. Louis.
What are the cheapest flights from Denver to St. Louis?
The cheapest round-trip flight from Denver to St. Louis starts at $68 from Sat, Nov 9 to Sun, Nov 10. The cheapest one-way flight starts at $29 and departs on Wed, Oct 30.
When should you visit St. Louis?
Apr–Sep is the most popular time to visit, coinciding with hot, humid summer and events like Fair St. Louis, a huge Fourth of July festival at Forest Park, and the Taste of St. Louis food festival (Sep). Weather in winter is cold, with occasional snow.
How do I find cheap dates to fly from Denver to St. Louis
It's easy to use Google Flights to find the cheapest days to fly from Denver to St. Louis.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.

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Popular trips from Denver

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