Cheap flight deals from Chicago to Denver

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

Round-trip
One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flight Info | Chicago to Denver

Cheapest one-way flight price	$30
Cheapest round-trip ticket price	$75
Off-season for travel	March
Peak season for travel	January
Flight distance	1,446.63 km
Average flight time	3 hours 41 minutes
Popular airline	Frontier Airlines

When is the cheapest time to fly from Chicago to Denver?

We monitor flight fares to help you find the best deals effortlessly

Cheapest flights

From price

20 27
May

27 4
4 11
11 18
18 25
Jun

25 1
1 8
8 15
15 22
22 29
Jul

29 6
6 13

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

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 $197.
How long does it take to fly from Chicago (CHI) to Denver (DEN) and what is the distance?

It takes around 3 hours 41 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, Aer Lingus, Gulf Air, Frontier Airlines, Swiss Airlines and Royal Jordanian.

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.

Be flexible with your travel dates to get the cheapest Chicago to Denver ticket.

Tap "Date" in the flight search bar to browse the calendar and find airfare from Chicago to Denver for the next six months in 2025. If you're looking to fly within the next three months, the lowest fare is $31 for a one-way ticket on Tue, Jun 3.

Compare cheap Chicago to Denver flight deals from hundreds of airlines.

Our powerful search system compares prices from over 500 airlines. So you can find the cheapest flights from Chicago to Denver. The most affordable airline currently operating on this route is Frontier Airlines.

Set up a Price Alert to track fare drops.

Set up a Price Alert for your Chicago to Denver route to track ticket prices effortlessly—no need to check manually every day.

Don't miss out on cheap Chicago to Denver flight deals and promo codes.

Stay updated on the latest deals with Trip.com Deals and Promo Codes for cheap flights. Sign up for a free membership to unlock even more exclusive flight discounts.

Book early or wait unitl the last minute to fine the best fares.

It's always better to book early! Airlines typically release their lowest fares about a year before departure, so check as soon as flights become available. If you miss that window, you may still find great deals closer to your travel date.

Search for flights on the go.

For the best booking experience on the go, download Trip.com and search for cheap flights from Chicago to Denver to access exclusive deals just for you.