$25 Cheap flight deals from Fort Collins (DEN) to Chicago (CHI)

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This Weekend's Flight Deals from Fort Collins to Chicago

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 20 - Tue, Sep 23
DEN
Denver Intl.
ORD
O'Hare Intl.
$285 Roundtrip, found 10 hours ago
$285
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Sat, Sep 20 from Denver Intl. to O'Hare Intl., returning Tue, Sep 23, priced at $285 found 10 hours ago
Fri, Sep 19 - Mon, Sep 22
DEN
Denver Intl.
MDW
Midway Intl.
$292 Roundtrip, found 2 hours ago
$292
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Fri, Sep 19 from Denver Intl. to Midway Intl., returning Mon, Sep 22, priced at $292 found 2 hours ago
Fri, Sep 19 - Sun, Sep 21
CYS
Cheyenne Regional
ORD
O'Hare Intl.
$395 Roundtrip, found 5 days ago
$395
Roundtrip
found 5 days ago
Select United flight, departing Fri, Sep 19 from Cheyenne Regional to O'Hare Intl., returning Sun, Sep 21, priced at $395 found 5 days ago

Airfares from $25 One Way, $94 Round Trip from Fort Collins to Chicago

Prices starting at $94 for return flights and $25 for one-way flights to Chicago were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Nov 13 - Mon, Nov 17
DEN
Denver
MDW
Chicago
$94 Roundtrip, found 3 hours ago
$94
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Denver to Chicago, returning Mon, Nov 17, priced at $94 found 3 hours ago
Sat, Nov 15 - Tue, Nov 18
DEN
Denver
MDW
Chicago
$127 Roundtrip, found 6 days ago
$127
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Sat, Nov 15 from Denver to Chicago, returning Tue, Nov 18, priced at $127 found 6 days ago
Tue, Sep 30 - Wed, Oct 1
DEN
Denver
ORD
Chicago
$129 Roundtrip, found 4 days ago
$129
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep 30 from Denver to Chicago, returning Wed, Oct 1, priced at $129 found 4 days ago
Tue, Dec 9 - Sat, Dec 13
DEN
Denver
ORD
Chicago
$157 Roundtrip, found 4 hours ago
$157
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Tue, Dec 9 from Denver to Chicago, returning Sat, Dec 13, priced at $157 found 4 hours ago
Sat, Nov 15 - Tue, Nov 18
DEN
Denver
RFD
Rockford
$159 Roundtrip, found 6 days ago
$159
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Nov 15 from Denver to Rockford, returning Tue, Nov 18, priced at $159 found 6 days ago

Chicago economy flight packages

Price found within the past 48 hours. Click for updated prices.
Hilton Garden Inn Chicago Downtown/Magnificent Mile
3.0-star property

Hilton Garden Inn Chicago Downtown/Magnificent Mile

8.4/10 Very Good! (3,812 reviews)

Oct 17 - Oct 20

3 night stay

Denver (DEN) to Chicago (ORD)

Frontier Airlines • Coach

Chicago (ORD) to Denver (DEN)

United • Coach
Save 100% on your flight
Price was $706, price is now $468 per person
$468
per person
found 1 day ago
Perfect location for our family. Close to all the sights of Chicago.

Reviewed on Sep 6, 2025

Hotel Riu Plaza Chicago
4.0-star property

Hotel Riu Plaza Chicago

9.4/10 Exceptional! (2,373 reviews)

Oct 21 - Oct 25

4 night stay

Denver (DEN) to Chicago (ORD)

Frontier Airlines • Coach

Chicago (ORD) to Denver (DEN)

Southwest Airlines • Coach
Save 100% on your flight
Price was $1,109, price is now $704 per person
$704
per person
found 1 day ago
One day didn’t receive room service

Reviewed on Sep 2, 2025

Trump International Hotel & Tower Chicago
5.0-star property

Trump International Hotel & Tower Chicago

9.4/10 Exceptional! (1,714 reviews)

Oct 24 - Oct 26

2 night stay

Denver (DEN) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $879, price is now $587 per person
$587
per person
found 1 day ago
Every employee makes every guest feel like a rockstar. Commitment to quality and guest experience is evident.

Reviewed on Sep 14, 2025

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More About Flying To Chicago from Fort Collins

Route Information for Flights from Fort Collins to Chicago

Origin Airport IATA Code
DEN
Destination Airport IATA Code
CHI
Distance
886 mi
Direct Flight Airlines
American Airlines, Qatar Airways, JAL, Air Canada, Aer Lingus, Emirates, Copa Airlines, Swiss, United Airlines, Frontier Airlines, Cathay Pacific, Turkish Airlines, Southwest Airlines, Royal Jordanian, Iberia, Brussels Airlines, Lufthansa, British Airways, Gulf Air
Earliest Flight Arrival
3:41PM UTC
Latest Flight Arrival
5:59AM UTC
Mar 10, 2018

Great overall service. Smooth landing. Plane was even early.

A verified traveler
Denver to Chicago · United

Fort Collins to Chicago

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You can always find affordable flights from Fort Collins to Chicago on Orbitz. Use different airlines to book arrival and departure flights, take advantage of vacation package deals, and secure exclusive rewards.

Frequently asked questions

Are there non-stop flights from Fort Collins to Chicago?
As many as 4 airlines operate nonstop services from Denver, CO (DEN-Denver Intl.) to Chicago, IL (ORD-O'Hare Intl.), so you won't have to stress about swapping planes or missing your connecting flight. Leading carriers on this route include:

  • United Airlines
  • Southwest Airlines
  • American Airlines
  • Frontier Airlines

What is the shortest flight from Fort Collins to Chicago?
The trip from Fort Collins to Chicago can be as quick as 2 hours and 15 minutes. With a short and sweet flight time like this, why not organize a spur-of-the-moment getaway?
What airlines fly from Fort Collins to Chicago most frequently?
Below are the airlines that operate the most frequently between Denver Intl. Airport (DEN) to O'Hare Airport. Whatever you look for in a carrier, we're sure you'll find one that meets your needs among these: United Airlines - (UA) with 273 flights every month Southwest Airlines - (WN) with 173 flights every month American Airlines - (AA) with 139 flights every month Frontier Airlines - (F9) with 30 flights every month
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.