Cheap flights from St. Louis to Denver

Choose between Southwest Airlines, Delta Air Lines, or United Airlines to find the best price

Travelers usually depart from St. Louis Lambert International, or St. Louis Union Station when they travel from St. Louis to Denver. Book your trip to arrive at Denver International, Denver Union Station, or Denver Greyhound station. The distance between St. Louis and Denver is 1236 km. The most popular airlines for this route are Southwest Airlines, Delta Air Lines, United Airlines, Frontier Airlines, and American Airlines. St. Louis and Denver have 207 direct flights per week.

Weekly flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Number of flights12313450-4238

Fly direct with

Frontier Airlines on Mondays, Thursdays, Fridays, and Sundays.

Southwest Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

United Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Check-in for a flight from St. Louis to Denver

NameCarrier codeIATA CodePassport needed during bookingAirport check-in closesOnline check-in available
Southwest AirlinesSWAWNNoUnknownNo
Delta Air LinesDALDLYesUnknownNo
United AirlinesUALUAYesUnknownNo
Frontier AirlinesFFTF9NoUnknownNo
American AirlinesAALAAYesUnknownNo

Frequently asked questions

How long does it take to travel from St. Louis to Denver?

A one-way nonstop (direct) flight between St. Louis and Denver takes around 2.5 hours.

What is the flight distance between St. Louis and Denver?

The flight distance between St. Louis and Denver is 1236 km.

What airlines offer nonstop (direct) flights between St. Louis and Denver?

Several carriers operate flights between St. Louis and Denver. Airlines offering nonstop (direct) flights include United Airlines, Frontier Airlines, Southwest Airlines.

What are the most popular routes to and from St. Louis?

Travelers frequently search for route combinations, such as St. Louis and McCarran International, Orlando International, Denver International, Hartsfield–Jackson Atlanta International, Luis Muñoz Marín International, Seattle–Tacoma International, San Diego International, Minneapolis–Saint Paul International, Salt Lake City International, Detroit Metropolitan, Des Moines International.

What are the most popular routes to and from Denver?

Travelers frequently search for route combinations, such as Denver and Los Angeles International, McCarran International, Fort Lauderdale–Hollywood International, Dallas/Fort Worth International, George Bush Intercontinental, Phoenix Sky Harbor International, O Hare International, Philadelphia International, Minneapolis–Saint Paul International, Austin–Bergstrom International, Detroit Metropolitan.

What airports are near St. Louis?

The main airport in St. Louis is St. Louis Lambert International. It is also served by St. Louis Lambert International, General Wayne A. Downing Peoria International, Central Illinois Regional, MidAmerica St. Louis, Williamson County Regional, Evansville Regional, Columbia Regional, Quincy Regional, Decatur, Abraham Lincoln Capital.

What airports are near Denver?

The main airport in Denver is Rocky Mountain Metropolitan Airport. It is also served by Colorado Springs, Laramie Regional, Pueblo Memorial, Cheyenne Regional, Eagle County Regional.

What buses and trains depart from St. Louis?

A number of bus and train companies depart from St. Louis, including Greyhound.

Is it possible to combine flights, buses, and trains in one itinerary when traveling between St. Louis and Denver?

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Which airlines fly between St. Louis and Denver?

When's the best time to travel between St. Louis and Denver?

What flights operate between St. Louis and Denver?

How many airports are there near St. Louis?

How many airports are there near Denver?

Is it possible to reach St. Louis by bus or train?

What time do nonstop (direct) flights between St. Louis and Denver depart?

What time do nonstop (direct) flights between St. Louis and Denver arrive?

What time do flights between St. Louis and Denver depart?

What time do flights between St. Louis and Denver arrive?

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