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Cheap flights from Chicago to Denver from $67

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 10/17. 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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Find the cheapest flights from Chicago to Denver (CHI-DEN)

Cheap round-trip flights

Frontier Logo
7:20 am - 9:13 amORD-DEN
2h 53mnonstop
Frontier Logo
8:30 pm - 11:59 pmDEN-ORD
2h 29mnonstop
$99Frontier
Find Deal
Tue, Sep 16 - Fri, Sep 19
Frontier Logo
10:51 am - 12:38 pmORD-DEN
2h 47mnonstop
Frontier Logo
8:41 pm - 12:12 amDEN-ORD
2h 31mnonstop
$100Frontier
Find Deal
Fri, Oct 24 - Tue, Oct 28
Frontier Logo
12:30 pm - 2:16 pmMDW-DEN
2h 46mnonstop
Frontier Logo
8:05 am - 11:30 amDEN-MDW
2h 25mnonstop
$100Frontier
Find Deal
Thu, Oct 30 - Mon, Nov 3
Frontier Logo
6:00 am - 7:41 amORD-DEN
2h 41mnonstop
Frontier Logo
1:42 pm - 12:11 amDEN-ORD
9h 29m1 stop
$101Frontier
Find Deal
Fri, Nov 7 - Sun, Nov 9
Frontier Logo
6:00 am - 7:45 amORD-DEN
2h 45mnonstop
Frontier Logo
8:30 pm - 11:59 pmDEN-ORD
2h 29mnonstop
$102Frontier
Find Deal
Mon, Sep 15 - Fri, Sep 19
Frontier Logo
6:24 pm - 8:08 pmMDW-DEN
2h 44mnonstop
Frontier Logo
7:49 am - 11:16 amDEN-MDW
2h 27mnonstop
$102Frontier
Find Deal
Thu, Oct 23 - Mon, Oct 27
Frontier Logo
7:40 am - 7:07 pmORD-DEN
12h 27m1 stop
Frontier Logo
6:00 am - 9:37 amDEN-ORD
2h 37mnonstop
$103Frontier
Find Deal
Thu, Oct 2 - Mon, Oct 6
Frontier Logo
6:00 am - 7:48 amORD-DEN
2h 48mnonstop
Frontier Logo
5:50 pm - 9:42 pmDEN-ORD
2h 52mnonstop
$104Frontier
Find Deal
Sun, Aug 31 - Wed, Sep 3
Frontier Logo
6:24 pm - 8:08 pmMDW-DEN
2h 44mnonstop
Frontier Logo
7:49 am - 11:16 amDEN-MDW
2h 27mnonstop
$104Frontier
Find Deal
Mon, Oct 20 - Mon, Oct 27
Southwest Logo
5:05 pm - 6:40 pmMDW-DEN
2h 35mnonstop
Southwest Logo
7:45 am - 11:05 amDEN-MDW
2h 20mnonstop
$163Southwest
Find Deal
Sat, Sep 20 - Mon, Sep 22

Frontier flights from Chicago to Denver

Our best Frontier deals on Chicago to Denver flight tickets
Frontier
Sep 16
ORD7:20 amChicago O'Hare Intl
2h 53m
DEN9:13 amDenver Intl
Sep 19
DEN8:30 pmDenver Intl
2h 29m
ORD11:59 pmChicago O'Hare Intl
$99
Find similar
Frontier
Oct 24
ORD10:51 amChicago O'Hare Intl
2h 47m
DEN12:38 pmDenver Intl
Oct 28
DEN8:41 pmDenver Intl
2h 31m
ORD12:12 amChicago O'Hare Intl
$100
Find similar
Frontier
Nov 7
ORD6:00 amChicago O'Hare Intl
2h 41m
DEN7:41 amDenver Intl
Nov 9
DEN1:42 pmDenver Intl
9h 29m
1 stop
ORD12:11 amChicago O'Hare Intl
$101
Find similar

Southwest flights from Chicago to Denver

Our best Southwest deals on Chicago to Denver flight tickets
Southwest
Sep 20
MDW5:05 pmChicago Midway
2h 35m
DEN6:40 pmDenver Intl
Sep 22
DEN7:45 amDenver Intl
2h 20m
MDW11:05 amChicago Midway
$163
Find similar
Southwest
Sep 4
MDW7:10 amChicago Midway
2h 35m
DEN8:45 amDenver Intl
Sep 6
DEN7:25 pmDenver Intl
2h 25m
MDW10:50 pmChicago Midway
$179
Find similar
Southwest
Sep 9
MDW4:25 pmChicago Midway
4h 25m
1 stop
DEN7:50 pmDenver Intl
Sep 16
DEN1:10 pmDenver Intl
2h 20m
MDW4:30 pmChicago Midway
$203
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 26, 2025.
Use the filters below to find and compare flights from Chicago to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Tue 9/16

7:20 am-9:13 am

Nonstop2h 53m

Denver Intl

Fri 9/19

8:30 pm-11:59 pm

Nonstop2h 29m

$99

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Fri 10/24

10:51 am-12:38 pm

Nonstop2h 47m

Denver Intl

Tue 10/28

8:41 pm-12:12 am

Nonstop2h 31m

$100

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Thu 10/30

12:30 pm-2:16 pm

Nonstop2h 46m

Denver Intl

Mon 11/3

8:05 am-11:30 am

Nonstop2h 25m

$100

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Fri 11/7

6:00 am-7:41 am

Nonstop2h 41m

Denver Intl

Sun 11/9

1:42 pm-12:11 am

1 stop9h 29m

$101

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Mon 9/15

6:00 am-7:45 am

Nonstop2h 45m

Denver Intl

Fri 9/19

8:30 pm-11:59 pm

Nonstop2h 29m

$102

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Thu 10/23

6:24 pm-8:08 pm

Nonstop2h 44m

Denver Intl

Mon 10/27

7:49 am-11:16 am

Nonstop2h 27m

$102

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Thu 10/2

7:40 am-7:07 pm

1 stop12h 27m

Denver Intl

Mon 10/6

6:00 am-9:37 am

Nonstop2h 37m

$103

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Sun 8/31

6:00 am-7:48 am

Nonstop2h 48m

Denver Intl

Wed 9/3

5:50 pm-9:42 pm

Nonstop2h 52m

$104

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Mon 10/20

6:24 pm-8:08 pm

Nonstop2h 44m

Denver Intl

Mon 10/27

7:49 am-11:16 am

Nonstop2h 27m

$104

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Sat 9/20

5:05 pm-6:40 pm

Nonstop2h 35m

Denver Intl

Mon 9/22

7:45 am-11:05 am

Nonstop2h 20m

$163

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Denver from

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 cheapest month to fly to Denver?

The cheapest month to fly to Denver from Chicago is in November. Flight prices, which tend to average around $157, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in November, then you should wait until September to fly from Chicago, when ticket prices are also cheap, with an average price of $161.

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 $231. 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 $297.

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 $232. Flights at noon are often more expensive with an average ticket price of $280.

What is the cheapest Chicago to Denver Intl flight route?

Fly from Chicago O'Hare Intl 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 weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $211 when searching 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 $177 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.

How have Chicago to Denver flight prices changed over time?

As of August 2025, prices for Chicago to Denver flights are approximately 29% more expensive when compared to flights at the same time last year.

When to book flights from Chicago to Denver

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Denver according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

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

Best Price Found

$115

Fastest flight time

2h 30m

Direct flights

Every day

Airports in Denver

1 airport
The best one-way flight to Denver from Chicago in the past 72 hours is $115. The best round-trip flight deal from Chicago to Denver found on momondo in the last 72 hours is $151.
The fastest flight from Chicago to Denver takes 2h 30m
Direct flights go from Chicago to Denver every day.
There is 1 airport near Denver: Denver Intl (DEN)
Search flight deals

  • Is flying the fastest way to get from Chicago to Denver?

    At 2h 35m, 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 $99. 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 $183.

  • How far is Chicago to Denver Intl by plane?

    Chicago and Denver Intl are 917.4 mi apart from one another. 2h 35m 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?

  • 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?

  • What is the most popular airline from Chicago to Denver?

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
FrontierPriceFrom $56Free CancellationRating
5.8
3,200 reviews
Search Frontier flights
American AirlinesPriceFrom $152Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $157Free CancellationRating
8.0
4,243 reviews
Search Southwest flights
United AirlinesPriceFrom $161Free CancellationRating
7.4
8,943 reviews
Search United Airlines flights

  • Southwest Flights From Chicago to Denver

    Southwest is one of the most popular airlines flying from Chicago to Denver, operating 62 flights/week on average for this route. A good Southwest flight deal for Chicago to Denver starts from $157 round-trip, up to an average price of $256. Our users have rated Southwest at 8.0/10.

  • United Airlines Flights From Chicago to Denver

    Across 8,943 United Airlines reviews on momondo, the average score is 7.4/10. United Airlines flies from Chicago to Denver about 63 times each week, with ticket deals ranging from $161 to $292. 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 locations
Estes Park
Breckenridge
Black Hawk
Aurora
Fort Collins
Keystone
Cripple Creek
Longmont
Boulder
Manitou Springs
Lakewood
Greeley
Westminster
Thornton
Winter Park
Grand Lake
Copper Mountain
Frisco
Silverthorne
Centennial

Why 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.

An easier way to manage your Denver trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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