Cheap Flights from Chicago to Denver
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
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Flights from Chicago to Denver
Cheapest airlines flights from Chicago to Denver
Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.
Find cheap flights from Chicago to Denver
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
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Round-trip
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One way
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Cheapest nonstop
ORD 05:402h 52mNonstopDEN 07:32Chicago - Denver | Thu, Jun 12 | Frontier Airlines
DEN 17:262h 27mNonstopMDW 20:53Denver - Chicago | Thu, Jun 12 | Frontier AirlinesUS$80 US$25268% OFF68% OFFUS$252 US$80 -
MDW 14:442h 52mNonstopDEN 16:36Chicago - Denver | Tue, Jun 3 | Frontier Airlines
DEN 20:222h 37mNonstopORD 23:59Denver - Chicago | Sat, Jun 7 | Frontier AirlinesUS$81 US$25268% OFF68% OFFUS$252 US$81
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MDW 14:442h 52mNonstopDEN 16:36Chicago - Denver | Sun, Jun 1 | Frontier Airlines
DEN 20:222h 37mNonstopORD 23:59Denver - Chicago | Tue, Jun 3 | Frontier AirlinesUS$86 US$25266% OFF66% OFFUS$252 US$86
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ORD 06:002h 51mNonstopDEN 07:51Chicago - Denver | Wed, Jun 4 | Frontier Airlines
DEN 20:222h 37mNonstopORD 23:59Denver - Chicago | Fri, Jun 6 | Frontier AirlinesUS$8666% OFFUS$252 US$86
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ORD 06:003h 2mNonstopDEN 08:02Chicago - Denver | Wed, May 28 | Frontier Airlines
DEN 20:222h 30mNonstopORD 23:52Denver - Chicago | Fri, May 30 | Frontier AirlinesUS$8666% OFFUS$252 US$86
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MDW 14:442h 49mNonstopDEN 16:33Chicago - Denver | Sat, May 24 | Frontier Airlines
DEN 17:262h 27mNonstopMDW 20:53Denver - Chicago | Sun, May 25 | Frontier AirlinesUS$11156% OFFUS$252 US$111
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ORD 06:003h 2mNonstopDEN 08:02Chicago - Denver | Sun, May 25 | Frontier Airlines
DEN 20:222h 30mNonstopORD 23:52Denver - Chicago | Fri, May 30 | Frontier AirlinesUS$11554% OFFUS$252 US$115
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ORD 06:003h 2mNonstopDEN 08:02Chicago - Denver | Thu, May 29 | Frontier Airlines
DEN 17:262h 27mNonstopMDW 20:53Denver - Chicago | Sat, May 31 | Frontier AirlinesUS$12550% OFFUS$252 US$125
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ORD 06:003h 2mNonstopDEN 08:02Chicago - Denver | Sat, May 31 | Frontier Airlines
DEN 20:222h 37mNonstopORD 23:59Denver - Chicago | Mon, Jun 2 | Frontier AirlinesUS$13447% OFFUS$252 US$134
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ORD 06:003h 2mNonstopDEN 08:02Chicago - Denver | Tue, May 27 | Frontier Airlines
DEN 20:222h 30mNonstopORD 23:52Denver - Chicago | Thu, May 29 | Frontier AirlinesUS$19921% OFFUS$252 US$199
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CHI 13:0017h 25m1 stopsDEN Invalid DateChicago - Denver | Thu, May 22 | Normal Airline
DEN 15:006hNonstopCHI 16:00Denver - Chicago | Sat, May 24 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
ORD 06:002h 51mNonstopDEN 07:51Chicago - Denver | Wed, Jun 11 | Frontier AirlinesUS$41 US$19880% OFF80% OFFUS$198 US$41
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MDW 14:442h 49mNonstopDEN 16:33Chicago - Denver | Sat, May 24 | Frontier AirlinesUS$60 US$19870% OFF70% OFFUS$198 US$60
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MDW 14:442h 49mNonstopDEN 16:33Chicago - Denver | Thu, May 29 | Frontier AirlinesUS$62 US$19869% OFF69% OFFUS$198 US$62
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ORD 06:003h 2mNonstopDEN 08:02Chicago - Denver | Wed, May 28 | Frontier AirlinesUS$6369% OFFUS$198 US$63
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ORD 06:003h 2mNonstopDEN 08:02Chicago - Denver | Sat, May 31 | Frontier AirlinesUS$6369% OFFUS$198 US$63
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MDW 14:442h 52mNonstopDEN 16:36Chicago - Denver | Tue, Jun 3 | Frontier AirlinesUS$6866% OFFUS$198 US$68
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MDW 14:442h 52mNonstopDEN 16:36Chicago - Denver | Thu, Jun 5 | Frontier AirlinesUS$6866% OFFUS$198 US$68
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MDW 14:442h 49mNonstopDEN 16:33Chicago - Denver | Tue, May 27 | Frontier AirlinesUS$12836% OFFUS$198 US$128
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ORD 06:003h 2mNonstopDEN 08:02Chicago - Denver | Mon, May 26 | Frontier AirlinesUS$13731% OFFUS$198 US$137
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ORD 06:003h 2mNonstopDEN 08:02Chicago - Denver | Sun, May 25 | Frontier AirlinesUS$15721% OFFUS$198 US$157
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CHI 13:0017h 25m1 stopsDEN Invalid DateChicago - Denver | Thu, May 22 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Chicago to Denver Flight Information
| Cheapest one-way flight price | $40 |
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| Cheapest round-trip ticket price | $79 |
| Off-season for travel | March |
| Peak season for travel | February |
| Flight distance | 1,446.63 km |
| Average flight time | 3 hours 50 minutes |
| Popular airline | Frontier Airlines |
When is the cheapest time to book flights from Chicago to Denver?
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Frequently Asked Questions
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When are flight tickets from Chicago (CHI) to Denver (DEN) the cheapest?
Airlines adjust prices for flights from Chicago to Denver based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much do flights from Chicago (CHI) to Denver (DEN) cost?
According to Trip.com's data, the lowest price is around $199. -
How long does it take to fly from Chicago (CHI) to Denver (DEN) and what is the distance?
It takes around 3 hours 50 minutes to fly from Chicago (CHI) to Denver (DEN). -
What are the most popular airlines that fly from Chicago (CHI) to Denver (DEN)?
Airlines with flights from Chicago (CHI) to Denver (DEN): Southwest Airlines, American Airlines, United Airlines, Air Canada, Iberia, Aer Lingus, Frontier Airlines and Swiss Airlines.
How to find a cheap flight from Chicago to Denver
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Chicago to Denver. Book your flights at the right time and save more.
Being flexible with your dates to get the cheapest Chicago to Denver ticket.
Tap "Date" on flight search bar to scan through the calender for Chicago to Denver airfare over next 6 months in 2025. If you would like to fly in next 3 months, it seems the cheapest date is on Wed, Jun 11 at US$41 for one-way flights.
Compare cheap Chicago to Denver flight deals from over hundreds of airlines.
Our extensive search allows you to compare prices from over 500 airlines to choose the cheapest flight tickets from Chicago to Denver. The cheapest airline operating is Frontier Airlines.
Set up a Price Alert
By setting up a Price Alert for your Chicago to Denver route, you can easily track the price of your airline tickets from Chicago to Denver without manually checking every day.
Don't miss cheap Chicago to Denver flight deals and promo codes.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights for cheap flights. If registering a free membership, you can receive more deals for your flights.
Book early or wait unitl the last minute.
It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.
Search for flights on the go.
To get the best flight booking experience on the go, download Trip.com free app and search for cheap flight tickets from Chicago to Denver to get exclusive deals for you.
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