Cheap flights from Chicago, IL to Denver, CO

Flights starting at $56. Choose between Linear Air, United Airlines, or American Airlines to find the best price.

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Travelers usually depart from O Hare International, Chicago Midway International, Chicago, IL - Union Station, Chicago Rockford International, or Chicago Downtown Greyhound Station when they travel from Chicago to Denver. Book your trip to arrive at Denver International, Denver Union Station, Centennial Airport, or Rocky Mountain Metropolitan Airport. The distance between Chicago and Denver is 1438 km. The most popular airlines for this route are Linear Air, United Airlines, American Airlines, Frontier Airlines, and Spirit Airlines. Chicago and Denver have 401 direct flights per week.

Weekly direct flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Direct flights14141414141414
Fly direct with

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

Frontier 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 Chicago to Denver

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Linear Air O2YesNo
United AirlinesUALUAYesNo
American AirlinesAALAAYesNo
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
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Frequently asked questions

How long does it take to travel from Chicago to Denver?
A one-way nonstop (direct) flight between Chicago and Denver takes around 2.8 hours.
What is the flight distance between Chicago and Denver?
The flight distance between Chicago and Denver is 1438 km.
What airlines offer nonstop (direct) flights between Chicago and Denver?
Several carriers operate flights between Chicago and Denver. Airlines offering nonstop (direct) flights include American Airlines, United Airlines, Frontier Airlines.
What are the most popular routes to and from Chicago?
Travelers frequently search for route combinations, such as Chicago and Las Vegas, Guadalajara, Orlando, Phoenix, Mexico City, Paris, Barcelona, Tampa, Miami, London, Rome, Los Angeles, Madrid, Fort Myers, Athens, San Francisco, New York, Austin, Atlanta, Fort Lauderdale.
What are the most popular routes to and from Denver?
Travelers frequently search for route combinations, such as Denver and Dallas, Minneapolis, Los Angeles, Washington, D.C., Houston, Orlando, San Francisco, Atlanta, Las Vegas, Austin, Phoenix, Philadelphia, San Diego, Miami, New York, Tampa, Detroit, Seattle, Salt Lake City, Portland.
Which airports are there in Chicago?
Chicago is mainly served by O Hare International. But there are other airports nearby, including Chicago Midway International, Chicago Rockford International.
What airports are near Chicago?
The main airport in Chicago is O Hare International. It is also served by Gerald R. Ford International, General Mitchell International, Dane County Regional, General Wayne A. Downing Peoria International, South Bend International, Fort Wayne International, Central Illinois Regional, Quad City International, Muskegon County, Decatur.
What airports are near Denver?
The main airport in Denver is Denver International. It is also served by Colorado Springs, Eagle County Regional, Cheyenne Regional, Pueblo Memorial, Laramie Regional.
What buses and trains depart from Chicago?
A number of bus and train companies depart from Chicago, including Greyhound.
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Chicago and Denver?
What is Virtual Interlining and how do I use it?
Which airlines fly between Chicago and Denver?
When's the best time to travel between Chicago and Denver?
What flights operate between Chicago and Denver?
How many airports are there near Chicago?
How many airports are there near Denver?
Is it possible to reach Chicago by bus or train?
What time do nonstop (direct) flights between Chicago and Denver depart?
What time do nonstop (direct) flights between Chicago and Denver arrive?
What time do flights between Chicago and Denver depart?
What time do flights between Chicago and Denver arrive?

Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.

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