Cheap Flights from Chicago (CHI) to Denver International (DEN)

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Flight deals from Chicago to Denver International

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Find the cheapest month to fly from Chicago to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago to Denver International flights are currently cheapest in May.

Direct flights from Chicago to Denver International

Chicago to Denver International: Alternative routes

Compare routes from Chicago to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Chicago to Denver: Flight information

The things to know before you go.
Cheapest flight found$45
Cheapest month to flyMay
Average flight time2 hrs, 43 mins
Most popular airlineSouthwest Airlines
Average flights per week552

Finding cheap flights from Chicago to Denver International: Frequently asked questions

The best price we found for a round-trip flight from Chicago to Denver International is $45. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 43 minutes is the average flight time from Chicago to Denver International.
Southwest Airlines, United and Air Canada fly direct from Chicago to Denver International.
There are 552 flights per week flying from Chicago to Denver International, as of May 2024.
The cheapest month to fly from Chicago to Denver International is usually May.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to Denver International Airport on Wednesday, May 15, 2024.
Yes – the average flight time is 2 hours and 43 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Denver International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Denver International is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Denver International is Frontier Airlines.

There are a thousand miles between Chicago’s sharp skyline and Denver’s mountain views. You’ll cover the distance in about two and a half hours in the air if you’re flying direct, and the trip will take you from the shores of Lake Michigan across the American heartland and into one of the country’s most beautiful landscapes.

You’re spoiled for choice regarding nonstop flights from Chicago to Denver. From Chicago O’Hare(OHR) you have your choice of three airlines. American, United, and Spirit all have a large volume of non-stop traffic to Denver International Airport(DEN.) You also have the option of flying from Chicago’s Midway Airport(MDW.) Both Southwest and Frontier airlines offer multiple daily direct flights to Denver.

Making your way to Chicago’s airports

Chicago O’Hare is one of the world’s busiest airports by passenger traffic, and it sprawls over four enormous passenger terminals (1, 2, 3, and 5. There is no Terminal 4.) Plan on arriving two hours before your flight to account for long walks and possible security delays.

Arriving at O’Hare via public transport couldn’t be simpler, and you might even get there faster than you would in traffic. Just catch the CTA Blue Line train, which runs every 15 minutes, 24/7 between the Loop and the airport’s main parking garage. It’s about a half hour long ride.

Sometimes, flying out of Chicago Midway can make your life a little simpler. It’s much smaller, with just one terminal split into three concourses. Midway is just 8 miles from downtown, and the CTA Orange Line will get you to the airport in 25 minutes. Just be aware that you’ll have a walk from the airport stop to Midway’s terminal. Budget 10 - 15 minutes to traverse the tunnel.

Arriving in Denver

Denver’s biggest asset is the wealth of natural beauty surrounding the city on all sides. The city is so proud of its gorgeous scenery that it actually has a law against new buildings which can obstruct the view from the State Capitol. Mountains are visible for 140 miles.

Many visitors focus their visit almost entirely on the great outdoors. Hiking and snow and water sports are enormously popular in the pristine national parks. With the highest percentage of arts spending per capita in the US, it’s a cultural mecca in the wilderness. Downtown is diverse, picturesque, and totally bikeable.

Once you’ve worn yourself out adventuring, visit one of the dozens of excellent microbreweries for a well-earned craft beer.

Let Skyscanner track down the cheapest tickets from Chicago to Denver with our totally free airfare comparison tool. Just a few clicks and you’ll see the best deal for your trip.


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Prices shown on this page are estimated lowest prices only. Found in the last 45 days.