Cheap flights from Chicago to Denver from $77
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Denver departing on 10/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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American Airlines flights from Chicago to Denver
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Frontier flights from Chicago to Denver
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How to get the cheapest flight ticket from Chicago to Denver
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Chicago and Denver?
What is the cheapest month to fly to Denver?
The cheapest month to fly to Denver from Chicago is in September. Flight prices, which tend to average around $152, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in September, then you should wait until November to fly from Chicago, when ticket prices are also cheap, with an average price of $157.
What is the cheapest day to depart on your flight to Denver?
The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $226. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $308.
What is the cheapest time of day to depart on your flight to Denver?
The cheapest time of day to fly to Denver is in the afternoon when flights can be purchased for as low as $209. Flights at noon are often more expensive with an average ticket price of $290.
What is the cheapest Chicago to Denver Intl flight route?
Fly from Chicago Midway to Denver Intl for the best Chicago - Denver Intl flight prices
How far in advance should I book a flight to Denver?
You are more likely to see cheaper flights to Denver from Chicago when booking 5 weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $211 when searching 5 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Chicago for as low as $176 on momondo.
What cabin class options are available on Chicago to Denver Intl flights?
There are 4 cabin classes available to choose from on Chicago to Denver Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Chicago to Denver Intl?
Frontier, American Airlines, and Southwest are the most popular carriers operating from Chicago to Denver Intl
What airlines fly to Denver?
Frontier, United Airlines and American Airlines are the top three most popular airlines that fly to Denver from Chicago according to our data. Frontier is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 4 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.
How many flights depart from Chicago to Denver on average per day?
As of June 2025, 59 flights take off from Chicago and land in Denver each day. The most common flight departure time for this route is 6:00PM, with 36% of daily flights taking off in the evening.
How many flights depart from Chicago to Denver on average per week?
As of June 2025, there are 415 flights per week flying from Chicago to Denver. The most common day of the week flights depart is Thu, with 18% of flights taking off on this day.
When to book flights from Chicago to Denver
Cheap Chicago to Denver (CHI to DEN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago to Denver
Is flying the fastest way to get from Chicago to Denver?
At 2h 34m, choosing to opt for a flight from Chicago to Denver for this trip versus opting for a train from Chicago to Denver or a bus from Chicago to Denver can save you time on travel.
Is flying the cheapest way to get from Chicago to Denver?
The cheapest way is to get a flight from Chicago to Denver, which can be as cheap as $116. A train from Chicago to Denver is more expensive than a flight, with prices starting at $298. A bus from Chicago to Denver is also an option, with an average price of $241.
How far is Chicago to Denver Intl by plane?
Chicago and Denver Intl are 917.4 mi apart from one another. 2h 34m is a normal flight duration for this route.
When did momondo last update prices for flights from Chicago to Denver Intl Airport?
Prices for flights from Chicago to Denver Intl Airport are updated daily.
How many operators does momondo search for flights from Chicago to Denver Intl Airport?
There are 4 operators available for flights from Chicago to Denver Intl Airport as of June 2025.
How old do you have to be to fly from Chicago to Denver Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The necessary travel and health documents for your Denver Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Chicago to Denver?
Based on momondo bookings for flights between Chicago and Denver, the leading plane model is Airbus A321neo, making up 12.91% of the total bookings. Other popular models include Boeing 737-800 with 11.40%, Boeing 737 MAX 8 with 10.93%, and Boeing 737-800 Passenger/BBJ2 (winglets) with 8.58%.
What is the most popular airline from Chicago to Denver?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Chicago to Denver is Frontier (49% of total bookings). The next most popular airlines are United Airlines (21%), Southwest (17%), and American Airlines (12%).
Best airlines flying from Chicago to Denver
Compare and see reviews for airlines that fly from Chicago to Denver with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $48 | Free Cancellation | Rating 5.9 3,295 reviews | |||
| PriceFrom $151 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $156 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $160 | Free Cancellation | Rating 8.0 4,287 reviews |
Southwest Flights From Chicago to Denver
Southwest is one of the most popular airlines flying from Chicago to Denver, operating 87 flights/week on average for this route. A good Southwest flight deal for Chicago to Denver starts from $160 round-trip, up to an average price of $261. Our users have rated Southwest at 8.0/10.
United Airlines Flights From Chicago to Denver
Across 8,790 United Airlines reviews on momondo, the average score is 7.4/10. United Airlines flies from Chicago to Denver about 65 times each week, with ticket deals ranging from $156 to $291. Price data is based on momondo searches in the last 72 hours.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Chicago to Denver?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Denver. momondo saves you time and could save you money on your trip.
Can I find flights from Chicago to Denver with flexible booking policies on momondo?
Yes. All flights to Denver from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Chicago to Denver?
Once all potential Chicago to Denver flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Chicago to Denver right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Chicago to Denver flights. All you need is a valid email address and we will do the rest; it is that quick and easy.