Cheap Flights from Chicago to Denver (CHI to DEN)

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Cheap Flight Deals from Chicago to Denver

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Round TripOne Way

CHI Chicago

DEN Denver

From $71^.98

Jan 8, 2026 - Jan 12, 2026

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CHI Chicago

DEN Denver

From $76^.98

Jan 12, 2026 - Feb 12, 2026

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*All fares above were last found on:

When’s a good time to book a flight from Chicago to Denver?

What’s the cheapest day of the week to fly from Chicago to Denver?‡

What is the cheapest month to fly from Chicago to Denver?‡

‡This information is based on historical data from the last 365 days.

When is the Cheapest Time to Book Flights from Chicago to Denver?

^‡

Got flexible travel dates? Use our flight data from the past year to discover ideal times to fly from Chicago to Denver. Find out which months and days typically offer lower fares and score our best savings.

CheapOair provides the predicted prices for one-way trips or round-trips with a duration of 7 days for domestic and 14 days for international trips based on historical data and available flight information. Graphs are estimates only. Prices are subject to change and can't be guaranteed until ticketed.

Estimated price for

Round-trip

‡Graphs are estimates only. Based on historical data and available flight information. Prices are subject to change and cannot be guaranteed until ticketed.

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Aug 31, 2025 Ray Hobson Very reliableThis was my first time using this site and I was very please with how everything was handled. Right after I booked my flight I got a call from one of the associates letting me know i didn't pick out my seats, and choose my seat for my trip there and back from my destination. I was kept up to date in my flight information and they made sure I got my boarding pass. My trip was very stress free. I will be using them again. Thank you!
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Aug 28, 2025 MariaEsperanza Estilo Nicko Went Above and BeyondI had to change the return flight of two out of four passengers in our group. Because only half of the group need to travel differently, it took several calls to Iberia Airlines directly and because of the time difference, Nicko coordinated and helped me over a couple of days. Throughout the experience, he explained what he was doing and why he needs to put me on hold and why he needs to call me back the following day, He was very knowledgeable, professional and empathetic to my predicament. Nicko owned the issues and the process and was very transparent with cost and every details of the transactions. I am very grateful and because of him, I will always trust CheapOAir with my travel needs. -Maria E.E.
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Aug 13, 2025 Godswill Yakubu Best Travel app to check.You truly get exceptional value for a lower price, and it feels completely fair. Since I started booking with this app, I’ve come to appreciate why they stand out as the best. It’s been a wonderful experience that makes me feel understood and valued as a customer.
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Chicago to Denver Flight Route Information

Travel Distance:	887 Miles
Airlines Flying This Route:	United Airlines, Frontier Airlines, American Airlines
Weekly Flights:	598
Avg. Flight Duration:	02.37 Hours

Insights About Flying from Chicago to Denver

Q. Which is the high season to travel from Chicago to Denver?

A. The month of July is considered the high season for flying from CHI to DEN. Traveling during the high season can affect ticket prices and availability, making this data crucial for trip planning.

Q. How many direct flights are available from CHI to DEN?

A. There are a total of 2407 direct flights from Chicago to Denver. For travelers seeking convenience and shorter travel times, this data is important when choosing flight options.

Q. Which is the low season to travel from Chicago to Denver?

A. February, March, May is considered the low season for traveling from Chicago to Denver, Colorado. Travelers looking for cost-effective options and fewer crowds may consider traveling during this period.

Q. How many daily flights are there between Chicago to Denver?

A. There are as many as 80 daily flights available for travelers between CHI to DEN. This data offers flexibility in choosing departure times that best suit your schedule.

Q. At what time does the last flight depart to Denver?

A. The last flight to Denver typically departs between 9:00PM - 10:00PM. Travelers who prefer late-night departures will find this information valuable for planning their journey.

Q. What percentage of travelers spent an average of 1 days in Denver, Colorado?

A. Approximately 39.57% of travelers spent an average of 1 days exploring Denver. This information can assist in planning the duration of your stay in Denver

Q. What percentage of CHI to DEN flyers traveled with kids under 14?

A. About 6% of passengers on flights from Chicago to Denver were accompanied by children under the age of 14. This information is useful if you're planning a family trip and want to know how common it is to travel with young children on this route.

Q. What percentage of Chicago to Denver travelers were over 60 years old?

A. A notable 16% of travelers were aged 60 or older. This statistic provides insights for senior travelers or those seeking a mature travel demographic.

Q. What percentage of CHI to DEN travelers were millennials?

A. Millennials make up a significant portion of travelers on this route, accounting for 40% of all passengers. If you're a millennial looking to connect with like-minded travelers, this statistic might interest you.

Q. What percentage of Chicago to Denver travelers were female?

A. Almost half of the passengers, approximately 49% were female. Knowing the gender distribution can be useful for solo female travelers or those interested in gender-related travel insights.

Q. What percent of Chicago to Denver travellers booked first or business class?

A. 6% of travelers booked first or business class on this route.

Q. At what time the earliest flight departs from Chicago?

A. The earliest flight departs at 7:00AM - 8:00AM.

Q. On which days one can have the most flight options in Denver?

A. Monday offer the most flight options in Denver.

^§ All flight facts are based on last 3 months' data except the highest and lowest booking months that are based on last 3 months' data.

Cheap Flights from Chicago to Denver

Take advantage of incredible deals on flights from Chicago (CHI) to Denver (DEN) on CheapOair! You'll save money that you can put towards your next trip, so book your flight to Denver and get ready to hit the road. Surrounded by the majestic Rocky Mountains, Denver is a youthful city that offers the perfect blend of recreational opportunities, rare wildlife and beautiful parks. Get up close and personal with diverse wildlife in the Denver Zoo which is spread across an area of 80 acres and is home to more than 4,000 animals. Adventure enthusiasts should visit the Red Rocks Park which offers some exciting hiking trails while art lovers should fix a date with the Denver Art Museum which contains works of some of the best artists. Don't forget to spend some quality time at the Elitch Gardens Theme Park which offers thrilling roller coaster rides that cannot be missed at any cost. You can save more when you book flights to Denver online with CheapOair. We offer fares from more than 450 carriers, so you can be sure you're getting the best price available. Plus, we can help you with all sorts of other travel arrangements, like hotel stays, car rentals, and more. So don't delay, book your flight with CheapOair now!

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