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$48+ Cheap flights from Chicago (CHI) to Denver (DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — DEN
Mar 2 — Mar 91
Sun 3/2
Sun 3/9
1 adult, Economy
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Find cheap flights from Chicago to Denver with Cheapflights

1. Tell us where you want to go
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3. Compare prices and book
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The best prices from Chicago to Denver Intl are usually found in May or April, booked 30 days in advance, depart on a Friday or Wednesday and return on a Friday

Cheap flight deals from Chicago to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$85
(CheapOair)

One-way from

$48
(Cheapflightsfares)

Popular in

December

Cheapest in

May

Average price

$192

Good round-trip deal

$128 or less

Good one-way deal

$74 or less
Provider with most accurate pricing for Chicago (CHI)-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Denver Intl flights.
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From Chicago (CHI) to Denver Intl
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One-way flight from Chicago (CHI) to Denver Intl
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Highest demand for flights based on searches. 7% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Chicago (CHI) to Denver Intl.
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Price to beat on a one-way flight from Chicago (CHI) to Denver Intl.
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Find flight deals from Chicago to Denver

Cheapest flights from Chicago to Denver
Explore the most affordable flight options available from Chicago to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 25, 2025.

This CheapOair deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/126:45 amORD - DEN
Nonstop2h 57mFrontier
Mon 4/149:08 pmDEN - ORD
Nonstop2h 29mFrontier
Deal found 2/23$85
This Kiwi.com deal was found by Cheapflights users on 2/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/286:15 amMDW - DEN
Nonstop2h 46mFrontier
Wed 5/288:59 pmDEN - MDW
Nonstop2h 28mFrontier
Deal found 2/25$105
This American Airlines deal was found by Cheapflights users on 2/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/258:39 pmORD - DEN
Nonstop3h 00mAmerican Airlines
Tue 4/294:07 pmDEN - ORD
Nonstop2h 33mAmerican Airlines
Deal found 2/25$151
This Southwest deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/106:55 pmORD - DEN
Nonstop3h 00mSouthwest
Mon 4/147:30 pmDEN - ORD
Nonstop2h 35mSouthwest
Deal found 2/24$153
This Southwest deal was found by Cheapflights users on 2/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/116:15 amMDW - DEN
Nonstop2h 40mSouthwest
Thu 3/135:50 amDEN - MDW
Nonstop2h 30mSouthwest
Deal found 2/25$153
This United Airlines deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/106:03 pmORD - DEN
Nonstop2h 52mUnited Airlines
Thu 3/136:00 amDEN - ORD
Nonstop2h 33mUnited Airlines
Deal found 2/23$169
This Delta deal was found by Cheapflights users on 2/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/254:00 pmORD - DEN
1 stop4h 58mDelta
Thu 4/36:23 amDEN - ORD
1 stop5h 18mDelta
Deal found 2/25$217
This Delta deal was found by Cheapflights users on 2/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1910:25 amMDW - DEN
1 stop4h 32mDelta
Wed 4/210:39 amDEN - MDW
1 stop6h 23mDelta
Deal found 2/25$217
This Gotogate deal was found by Cheapflights users on 2/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3112:10 pmORD - DEN
1 stop7h 43mMultiple Airlines
Thu 4/312:14 amDEN - ORD
1 stop7h 35mMultiple Airlines
Deal found 2/25$234

Find flights from Chicago to Denver within your budget

Customize your flight search to find flights from Chicago to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 25, 2025.

Fly from

Chicago

Fly to

Denver

Route

Depart

Return

Price

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Sat 4/12

6:45 am-8:42 am

Nonstop2h 57m

Denver Intl

Mon 4/14

9:08 pm-12:37 am

Nonstop2h 29m

$85

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Tue 3/25

6:40 am-8:32 am

Nonstop2h 52m

Denver Intl

Tue 3/25

8:55 pm-12:17 am

Nonstop2h 22m

$115

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Fri 4/25

8:39 pm-10:39 pm

Nonstop3h 00m

Denver Intl

Tue 4/29

4:07 pm-7:40 pm

Nonstop2h 33m

$151

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Thu 4/10

6:55 pm-8:55 pm

Nonstop3h 00m

Denver Intl

Mon 4/14

7:30 pm-11:05 pm

Nonstop2h 35m

$153

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Tue 3/11

6:15 am-7:55 am

Nonstop2h 40m

Denver Intl

Thu 3/13

5:50 am-9:20 am

Nonstop2h 30m

$153

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Mon 3/10

6:03 pm-7:55 pm

Nonstop2h 52m

Denver Intl

Thu 3/13

6:00 am-9:33 am

Nonstop2h 33m

$169

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Tue 3/25

4:00 pm-7:58 pm

1 stop4h 58m

Denver Intl

Thu 4/3

6:23 am-12:41 pm

1 stop5h 18m

$217

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Wed 3/19

10:25 am-1:57 pm

1 stop4h 32m

Denver Intl

Wed 4/2

10:39 am-6:02 pm

1 stop6h 23m

$217

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Mon 3/31

12:10 pm-6:53 pm

1 stop7h 43m

Denver Intl

Fri 4/4

4:49 pm-12:58 am

1 stop7h 09m

$234

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Fri 4/18

6:40 am-8:34 am

Nonstop2h 54m

$48

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/23

Showing 1-10 of 23 results
1
2
3

Compare providers for flights from Chicago to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Denver in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*2 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Denver flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Chicago to Denver flights

Find out what our experts recommend to make the most of your Chicago to Denver trip
Airlines
Frontier

F9's UpFront Plus seats offer more comfort with a guaranteed empty middle seat.


Book early morning flights on F9 for better on-time performance and fewer delays.

Read more about Frontierby Marisa Garcia
United Airlines

UA's Economy Plus offers extra legroom, ideal for a comfortable short flight.


UA's MileagePlus program allows pooling miles, making it easier to earn free flights.

Read more about United Airlinesby Harriet Baskas
American Airlines

AA offers Main Cabin Extra seats with more legroom for a comfortable short-haul experience.


Enjoy priority boarding and check-in with AA's loyalty program, enhancing your travel efficiency.

Read more about American Airlinesby Marisa Garcia
Airports
ORD

At ORD, Garrett Popcorn near gate B8 is a must-try snack before your flight. It's a Chicago favorite!

Read more about ORDby Ramsey Qubein
MDW

Use the Orange Line for a quick, 30-minute ride from downtown Chicago to MDW, avoiding traffic and saving money.

Read more about MDWby Ramsey Qubein
DEN

Take the A Line train from DEN to Union Station for a 37-minute ride to downtown Denver, running every 15 minutes.

Read more about DENby Emily Zemler
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier and American Airlines

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on ORD and MDW

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Emily Zemler

Emily Zemler

Expert on DEN

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.

Best time to book a flight from Chicago to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Chicago to Denver

Get recent, data-driven insights about flights from Chicago to Denver including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Chicago to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Denver. Price data was last updated on February 25, 2025.

The price you pay for your flight from Chicago to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 30 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Chicago to Denver?

Currently, October is the cheapest month in which you can book a flight from Chicago to Denver (average of $197). Flying from Chicago to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to DEN?

Find hourly flight availability from Chicago to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 25, 2025.

A simple way to save on the total cost of your ticket is to fly from Chicago to Denver in the afternoon. If you’re flexible enough to do this you can expect to save up to 47% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Chicago to Denver?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Denver. Price data was last updated on February 23, 2025.

Travelers seeking maximum savings on their Chicago to Denver flight should consider departing on Saturday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago to Denver

Explore weekly flight availability from Chicago to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 25, 2025.

The most flights from CHI to DEN are scheduled on a Monday (54 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 on average).

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated February 25, 2025.
To help decide which airline to fly from Chicago to Denver, see what other customers have to say about Southwest, Alaska Airlines and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,374 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Southwest
8.1
Very good
4,374 reviews
Southwest
8.1
Very good
4,374 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Alaska Airlines
8.0
Very good
9,713 reviews
Southwest
8.1
Very good
4,374 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Delta
8.0
Very good
8,163 reviews
Southwest
8.1
Very good
4,374 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

United Airlines
7.4
Good
8,734 reviews
Southwest
8.1
Very good
4,374 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Allegiant Air
7.3
Good
759 reviews
Southwest
8.1
Very good
4,374 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Denver from Chicago?

    Denver Intl (DEN), located 18.5 mi from the city center, is the airport you fly into when you book flights from Chicago to Denver. 5 airlines have flights to Denver Intl from Chicago on a regular basis. Booking flights from Chicago to Denver Intl should not be difficult; the airport handles an average of 36 inbound flights from Chicago per day.

  • What are the cheapest airlines flying from Chicago to Denver round-trip?

    Frontier, at $85, was found to be the cheapest airline from Chicago to Denver.Alternate airlines to your destination round-trip include American Airlines and Southwest. Users have found that Frontier is 51% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Chicago to Denver one-way?

    One-way options have recently been found by users for as low as $48 on Frontier. Other airlines that offer cheap prices include Southwest from $74 and United Airlines from $80 one-way.

  • What are the most reliable airlines from Chicago to Denver?

    The top 3 most reliable airlines when flying from Chicago to Denver are Envoy Air (100%), Royal Jordanian (89%) and American Airlines (84%).

  • What are the cheapest flights from Chicago to Denver?

    Looking at all options, your cheapest flight can be booked for $61. While the most popular route (Chicago O'Hare Intl - Denver Intl) can be booked for $137 on average our data indicates $588 when flying from Chicago to Denver.

  • Can I find deals for flights from Chicago to Denver that include hotel bookings?

    Yes. In addition to deals on Chicago to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Denver.

  • Can I find deals for business class flights from Chicago to Denver?

    Yes. Cheapflights offers flight deals from Chicago to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Denver?

    Currently, October is the cheapest month in which you can book a flight from Chicago to Denver (average of $197). Flying from Chicago to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Westminster
Black Hawk
Winter Park
Lakewood
Broomfield
Cripple Creek
Silverthorne
Golden
Brighton
Keystone
Frisco
Wheat Ridge
Grand Lake
Idaho Springs
Greeley
Central City
Copper Mountain
Longmont
Thornton
Limon

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Alternative routes for Chicago to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Chicago to Denver

Discover the top 5 airlines that operate flights from Chicago to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$41Average$121FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$140Average$241FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$150Average$298FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$157Average$264FlexibilityNo cancel feeOn-time63%
DeltaCheapest$185Average$268FlexibilityNo cancel feeOn-timeN/A
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