$64 Cheap Flights from Chicago (ORD) to Denver (DEN)

View $64 flight on Tue, Jul 15, 2025Opens in a new window

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN)

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Cheap Flights from Chicago to Denver (ORD-DEN)

Prices were available within the past 7 days and start at $64 for one-way flights and $128 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, Jul 15 - Wed, Jul 16
ORD
Chicago
DEN
Denver
$128 Roundtrip, just found
$128
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Jul 15 from Chicago to Denver, returning Wed, Jul 16, priced at $128 just found
Frontier Airlines
Sat, Jul 12 - Sat, Jul 19
ORD
Chicago
DEN
Denver
$133 Roundtrip, just found
$133
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Jul 12 from Chicago to Denver, returning Sat, Jul 19, priced at $133 just found
Frontier Airlines
Wed, Sep 17 - Sat, Sep 20
ORD
Chicago
DEN
Denver
$137 Roundtrip, just found
$137
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Sep 17 from Chicago to Denver, returning Sat, Sep 20, priced at $137 just found
Frontier Airlines
Wed, Aug 13 - Tue, Aug 19
ORD
Chicago
DEN
Denver
$142 Roundtrip, just found
$142
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Aug 13 from Chicago to Denver, returning Tue, Aug 19, priced at $142 just found
Frontier Airlines
Sat, Sep 20 - Tue, Sep 30
ORD
Chicago
DEN
Denver
$147 Roundtrip, just found
$147
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Sep 20 from Chicago to Denver, returning Tue, Sep 30, priced at $147 just found
Frontier Airlines
Wed, Jul 9 - Sun, Jul 13
ORD
Chicago
DEN
Denver
$148 Roundtrip, just found
$148
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Jul 9 from Chicago to Denver, returning Sun, Jul 13, priced at $148 just found
Southwest Airlines
Tue, Jul 29 - Tue, Aug 5
ORD
Chicago
DEN
Denver
$154 Roundtrip, found 3 hours ago
$154
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Tue, Jul 29 from Chicago to Denver, returning Tue, Aug 5, priced at $154 found 3 hours ago
United
Sat, Sep 6 - Tue, Sep 16
ORD
Chicago
DEN
Denver
$163 Roundtrip, just found
$163
Roundtrip
just found
Select United flight, departing Sat, Sep 6 from Chicago to Denver, returning Tue, Sep 16, priced at $163 just found
Delta
Fri, Aug 22 - Sat, Aug 23
ORD
Chicago
DEN
Denver
$211 Roundtrip, found 20 hours ago
$211
Roundtrip
found 20 hours ago
Select Delta flight, departing Fri, Aug 22 from Chicago to Denver, returning Sat, Aug 23, priced at $211 found 20 hours ago
Sun Country Airlines
Thu, Sep 11 - Sun, Sep 21
ORD
Chicago
DEN
Denver
$297 Roundtrip, just found
$297
Roundtrip
just found
Select Sun Country Airlines flight, departing Thu, Sep 11 from Chicago to Denver, returning Sun, Sep 21, priced at $297 just found

Find the cheapest month to fly from Chicago (ORD) to Denver (DEN)

September is typically the cheapest month to fly

From $48 - $177 per traveler.

Graph displaying average flight prices per month

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $128
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $128
Flights from Chicago (ORD) to Denver (DEN)
Origin airport
O'Hare Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, KEY LIME AIR DBA DENVER AIR CONNECTION, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$128
Distance
886 mi
Average flight time
1 hour 41 mins

Chicago to Denver Flights

The cheapest times to fly from Chicago to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Chicago to Denver are during the month of July. You can find some of the cheapest flights from Chicago to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to Denver

Sunday is one of the best days to book for cheap flights from Chicago to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Chicago to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Chicago to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $64 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Chicago to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Chicago to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN) cost?
Pick up cheap return flights starting at $148 from O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Frontier Airlines flight leaving ORD on July 10 2025 and touching down at DEN. The price was last updated on June 23 2025 and has not changed since.
What is the cheapest month to fly from ORD to DEN?
The cheapest flights from ORD to DEN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN)?
Enjoy a seamless journey to Denver Intl. Airport (DEN). 4 airlines operate direct flights from O'Hare Intl. Airport (ORD), including:
  • United Airlines
  • Southwest Airlines
  • American Airlines

What is the cheapest airline that flies from ORD to DEN?
Right now, the cheapest carrier offering one-way flights from ORD to DEN is Frontier Airlines. You can book a seat on this route from $74. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from ORD on July 10 2025. Prices were last updated on June 23 2025 and have not changed since.
How many flights per day from O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN)?
With, on average, 14 direct flights departing from O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN) daily, you'll be soaring through the skies in no time.
What are the most popular departure times for flights from O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN)?
The 12 PM departures from ORD to DEN are the top choice for many travelers. Greater demand means you'll likely pay more for these departures. If you want to save on your fare, pick a less crowded time to fly.
What day of the week has the most flights from ORD to DEN?
Sunday offers the most flights from O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN). Consider taking off on this day and you'll have a greater chance of finding a schedule that works for you.
What is the earliest flight from O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN)?
Hop on the earliest flight at around 6:15AM UTC-6, departing from O'Hare Intl. Airport (ORD). You'll be in the air for roughly 2h 45m, arriving at Denver Intl. Airport (DEN) at approximately 8:00AM UTC-7.
How long does it take to fly from O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN)?
The average flight time from ORD to DEN is 2 hours and 49 minutes, covering a distance of 890 mi.
What is the best time to fly from O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN)?
To avoid potential delays on the O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN) route, fly before 3 PM. Later departures have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Denver from O'Hare Intl. Airport (ORD)?
Denver Intl. Airport (DEN) is the only airport in Denver with direct flights from O'Hare Intl. Airport (ORD). Check out the options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN) last-minute?
Last-minute bookings from ORD to DEN are typically more expensive. To lock in the lowest rates, start searching for flights well ahead of time. That said, if you're flexible with your travel plans, it's possible to find a cheap ticket right before your journey.
Is it cheaper to book an ORD to DEN flight and hotel package?
Compared with arranging flights and hotels separately, booking an ORD to DEN flight and hotel package with Expedia could result in significant savings. What's more, managing everything in one place will take the stress out of planning your trip. Just pick your flights and select from our extensive range of hotels, then tailor your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN)?
If you booked your ORD to DEN flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

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