Cheap flights from Chicago to Denver (CHI - DEN)

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The best prices from Chicago to Denver Intl are usually found in August or July, booked 19 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

How to find the cheapest flight from
Chicago (CHI) to Denver (DEN)

All the information you need to plan the best CHI to DEN flight in 2021: compare Chicago to Denver flight prices with the expected peak season, weather and rainfall in Denver.
CHI - DEN
Price
$74 - $203
DEN
Temperature
30.2 - 73.4 °F
DEN
Precipitation
0.5 - 2.3 inches

Popular in

December

High demand for flights, 30% potential price rise

Cheapest in

August

Best time to find cheap flights, 48% potential price drop

Round-trip from

$74

From Chicago (CHI) to Denver Intl

One-way from

$51

One-way flight from Chicago (CHI) to Denver Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
When is the cheapest time to fly from Chicago to Denver (CHI - DEN)?

A simple way to save on the total cost of your ticket is to fly from Chicago to Denver in the evening. If you’re flexible enough to do this you can expect to save up to 42% on your trip compared to booking a flight at noon.

How far in advance should I book a flight from Chicago to Denver?

To save up to 7% on this flight, we recommend booking at least 20 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Chicago to Denver from $126 1-2 weeks out and tickets from $137 for flights departing within the next 72 hours.

What is the cheapest month to fly from Chicago to Denver?

Our data shows that August tends to be the cheapest month to fly to Denver from Chicago. Users have commonly found prices around $142 for the month, but tickets can be as low as $37. Due to multiple factors, prepare for potentially higher prices in December.

What is the cheapest day to fly round-trip from Chicago to Denver?

Travelers have found that booking a Monday departure is the best way to save up to 31% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

Cheap flights from Chicago to Denver in October, November 2021

The best prices found for CHI to DEN flights for October, November
6 Nov - 8 Nov
$62pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
26 Oct - 26 Oct
$63pp
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
26 Oct - 30 Oct
$64pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
ORD
Chicago O'Hare Intl

Chicago to Denver 2021 flight deals

Cheap flights to Denver from Chicago found for this year
6 Nov - 8 Nov
$62pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
26 Oct - 26 Oct
$63pp
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
26 Oct - 30 Oct
$64pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
ORD
Chicago O'Hare Intl

Non-stop flights to Denver from Chicago

Save time with Chicago to Denver direct flight deals
2 Nov - 5 Nov
$63pp
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
12 Nov - 13 Nov
$64pp
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
4 Nov - 6 Nov
$68pp
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
ORD
Chicago O'Hare Intl

Last minute flights from Chicago to Denver

Late deals on round-trip flights to Denver from Chicago, departing today and this week
26 Oct - 26 Oct
$63pp
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
26 Oct - 30 Oct
$64pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
26 Oct - 30 Oct
$66pp
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl

One-way flights to Denver Intl from Chicago

The cheapest one-way flights from Chicago to Denver
7:40 am - 9:38 am
Frontier
Nonstop
2h 58m
ORD - DEN
Frontier
$51
JustFly
6:13 pm - 7:55 pm
American Airlines
Nonstop
2h 42m
ORD - DEN
American Airlines
2:10 am - 8:15 pm
Spirit Airlines
2 Stops
19h 05m
ORD - DEN
Spirit Airlines
$62
FareScan

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Chicago</span> to <span class="emphasized">Denver</span> flights.

Flight FAQs

From Chicago to Denver

What airport do you fly into for flights to Denver from Chicago?

Denver Intl (DEN), located 18.5 mi from the city center, is the airport you fly into when you book flights from Chicago to Denver. 8 airlines have flights to Denver Intl from Chicago on a regular basis. Booking flights from Chicago to Denver Intl should not be difficult; the airport handles an average of 60 inbound flights from Chicago per day.

Which airlines flying from Chicago to Denver Intl have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Chicago to Denver Intl that may be offering flexible cancellation policies are United Airlines, Spirit Airlines, and Frontier. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Chicago to Denver for under $100 on Cheapflights?

Yes, there are multiple flights from Chicago to Denver for under $100. The cheapest flight booked recently is on Multiple Airlines for just $62, but on average you can expect to pay $72.

Are there nonstop flights from Chicago to Denver for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Chicago to Denver under $100. A good price for a nonstop flight from Chicago to Denver is less than $80.

Are there last-minute flights available from Chicago to Denver for under $100?

There are currently 20+ open flights from Chicago to Denver within the next 7 days for less than $100.

What days are nonstop flights available from Chicago to Denver?

Nonstop flights are available for this route on the following days: Wednesday, Thursday, Friday, Saturday.

How many flights depart from Chicago to Denver on average per day?

38 flight departures from Chicago to Denver per day on average.
Early Morning (Midnight to 6am) - 26% of flight departures
Morning (6am - Noon) - 24% of flight departures
Afternoon (Noon - 6pm) - 50% of flight departures

How long is the flight from Chicago to Denver?

A quick flight from Chicago to Denver can take about 3h 07m. Frontier provides one of the quickest options available for as low as $63. There are 891 mi between Chicago and Denver. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Chicago to Denver round-trip?

Frontier, at $63, was found to be the cheapest airline from Chicago to Denver. An alternate airline flying to your destination would be Spirit Airlines. Users have found that Frontier is 55% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Chicago to Denver one-way?

One-way options have recently been found by users for as low as $31 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $34 and American Airlines from $49 one-way.

What are the most popular airlines that fly from Chicago to Denver?

The most popular airlines flying from Chicago to Denver are Major Airline, American Airlines and Delta. Something to consider prior to booking your flight.

What are the cheapest flights from Chicago to Denver?

Looking at all options, your cheapest flight can be booked for $42. While the most popular route (Chicago O'Hare Intl - Denver Intl) can be booked for $64 on average our data indicates $467 when flying from Chicago to Denver

What are the most reliable airlines from Chicago to Denver?

The top 3 most reliable airlines when flying from Chicago to Denver are Air Canada (87%), Japan Airlines (86%) and Frontier (84%).

COVID Restrictions

View COVID Travel Restrictions for Denver, CO

Do I need a COVID test to fly to Denver from Chicago?

Information is based on travel restrictions for travel to Denver Intl within the United States

Most visitors from Chicago need to provide a negative COVID-19 test result and/or quarantine to enter Denver Intl.

COVID-19 testing requirements
Visitors from Chicago must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Denver Intl.

Quarantine requirements
Visitors from Chicago are not required to quarantine after entering Denver Intl.

Do I need a test to fly back to Chicago from Denver?

Returning to Chicago from Denver Intl

COVID-19 testing requirements
Visitors from Denver Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Chicago.

Quarantine requirements
Visitors from Denver Intl are not required to quarantine after entering Chicago.

Hide COVID Travel Restrictions for Denver, CO

Alternative routes for Chicago to Denver

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Denver

Things to know before you go - useful duration and weather info for your trip from Chicago to Denver.
Flight duration from Chicago to DEN
2h 43m
Average temperature for October in Denver
66.2 °F
Avg rainfall for October in Denver
0.9 ″

Airports servicing Chicago

Midway (MDW)
Rockford (RFD)

Airports servicing Denver

Top 6 airlines flying from Chicago to Denver Intl

The chart below displays the airlines Cheapflights users traveling from Chicago to Denver choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$39 $160 No cancel fee 62%
Spirit Airlines
$53 $155 No cancel fee 65%
United Airlines
$53 $215 No cancel fee 69%
American Airlines
$60 $229 No cancel fee 71%
Delta
$82 $276 No cancel fee N/A
Southwest
$231 $382 No cancel fee 63%

Hourly flight availability from Chicago to Denver

See what time of day planes typically take off from Chicago towards Denver.
Afternoon Noon to 6 PM 44% of CHI to DEN departures
Morning 6 AM to noon 29% of CHI to DEN departures
Evening 6 PM to midnight 22% of CHI to DEN departures
Early morning Midnight to 6 AM 5% of CHI to DEN departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Chicago to Denver
See how many times per day planes take to the skies headed from Chicago to Denver.
Sunday
32 daily flights
Monday
81 daily flights
Tuesday
76 daily flights
Wednesday
67 daily flights
Thursday
65 daily flights
Friday
73 daily flights
Saturday
30 daily flights
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