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Colorado Springs

$131+ Cheap flights from Illinois to Colorado Springs (COS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — COS
May 27 — Jun 31
Wed 5/27
Wed 6/3
1 adult, Economy
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Cheap flight deals from Illinois to Colorado Springs

Cheapest flights from Illinois to Colorado Springs
Explore the most affordable flight options available from Illinois to Colorado Springs. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 27, 2026.

This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:20 am
STL
-
COS
1 stop6h 28m
Delta
Tue 9/15:55 pm
COS
-
STL
1 stop5h 41m
Delta
Deal found 4/27$221
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:50 pm
STL
-
COS
2 stops7h 39m
Delta
Wed 8/2610:57 am
COS
-
STL
2 stops8h 34m
Delta
Deal found 4/27$231
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:30 pm
STL
-
COS
1 stop8h 45m
Delta
Thu 8/206:00 am
COS
-
STL
1 stop5h 53m
Delta
Deal found 4/22$240
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/32:00 pm
ORD
-
COS
2 stops9h 22m
Delta
Wed 6/1011:10 am
COS
-
ORD
1 stop7h 21m
Delta
Deal found 4/23$248
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/31:22 pm
MDW
-
COS
2 stops10h 00m
Delta
Wed 6/1011:10 am
COS
-
MDW
1 stop6h 08m
Delta
Deal found 4/23$248
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:00 am
STL
-
COS
1 stop7h 48m
Delta
Tue 6/96:00 am
COS
-
STL
1 stop5h 34m
Delta
Deal found 4/23$261
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/119:06 am
ORD
-
COS
Nonstop2h 53m
United Airlines
Tue 8/1812:45 pm
COS
-
ORD
Nonstop2h 44m
United Airlines
Deal found 4/25$271
This Southwest deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/35:30 am
STL
-
COS
1 stop7h 35m
Southwest
Tue 6/96:10 pm
COS
-
STL
1 stop4h 30m
Southwest
Deal found 4/23$276
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:30 am
STL
-
COS
1 stop4h 32m
Delta
Mon 8/315:55 pm
COS
-
STL
1 stop5h 41m
Delta
Deal found 4/27$277
This Southwest deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/412:30 pm
MDW
-
COS
Nonstop2h 30m
Southwest
Mon 6/82:40 pm
COS
-
MDW
Nonstop2h 20m
Southwest
Deal found 4/23$279
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:50 pm
STL
-
COS
2 stops7h 39m
Delta
Mon 8/315:55 pm
COS
-
STL
1 stop5h 41m
Delta
Deal found 4/27$282
This Southwest deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2110:15 am
MDW
-
COS
Nonstop2h 30m
Southwest
Thu 8/271:15 pm
COS
-
MDW
Nonstop2h 20m
Southwest
Deal found 4/23$295

Find flight deals from Illinois to Colorado Springs

Keep the following information in mind while searching for Illinois to Colorado Springs flight deals. Data was last updated April 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$221
(Delta)

One-way from

$131
(United Airlines)

Popular in

February

Cheapest in

November

Average price

$301

Good round-trip deal

$352 or less

Good one-way deal

$185 or less
Provider with most accurate pricing for Chicago (CHI)-Colorado Springs flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Colorado Springs flights.
Search Deals
From Illinois to Colorado Springs
Search Deals
One-way flight from Illinois to Colorado Springs
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Colorado Springs.
Search Deals
Price to beat on a one-way flight from Illinois to Colorado Springs.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Colorado Springs 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, Cheapflights users made 2,558,603 searches. Data last updated April 27, 2026.
Use the filters below to find and compare flights from Illinois to Colorado Springs that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoColorado Springs

ORD - COS

ORDCOS

Chicago O'Hare Intl

Sat 5/30

1:44 pm-10:22 pm

2 stops9h 38m

Colorado Springs

Wed 6/3

1:55 pm-9:53 pm

1 stop6h 58m

$306

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Tue 8/11

5:32 pm-11:49 pm

2 stops7h 17m

Colorado Springs

Wed 8/12

12:45 pm-9:22 pm

1 stop7h 37m

$306

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Tue 9/1

6:00 am-10:59 am

1 stop5h 59m

Colorado Springs

Wed 9/2

5:30 am-12:40 pm

1 stop6h 10m

$327

BloomingtonColorado Springs

BMI - COS

BMICOS

Bloomington-Normal

Fri 5/8

4:14 pm-9:27 pm

1 stop6h 13m

Colorado Springs

Tue 5/12

1:55 pm-10:30 pm

1 stop7h 35m

$329

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Wed 8/26

2:45 pm-9:45 pm

2 stops8h 00m

Colorado Springs

Sun 8/30

6:30 am-3:20 pm

2 stops7h 50m

$330

ChicagoColorado Springs

MDW - COS

MDWCOS

Chicago Midway

Wed 6/10

12:00 pm-7:15 pm

1 stop8h 15m

Colorado Springs

Mon 6/15

4:40 pm-1:00 am

1 stop7h 20m

$331

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Fri 6/5

7:45 pm-1:15 am

1 stop6h 30m

Colorado Springs

Mon 6/8

4:40 pm-12:35 am

1 stop6h 55m

$333

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Mon 8/10

1:30 pm-9:15 pm

1 stop8h 45m

Colorado Springs

Thu 8/13

6:00 am-12:53 pm

1 stop5h 53m

$333

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Sun 6/28

5:40 am-8:45 am

1 stop4h 05m

Colorado Springs

Sat 7/4

5:15 am-11:30 am

1 stop5h 15m

$333

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Sat 8/22

7:20 am-12:48 pm

1 stop6h 28m

Colorado Springs

Thu 8/27

6:00 am-2:38 pm

1 stop7h 38m

$333

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Illinois to Colorado Springs

Have a flexible travel schedule? Discover the best time to fly to Colorado Springs from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Colorado Springs

How far ahead should I book a flight from Illinois to Colorado Springs?

To ensure you get the cheapest price possible for a flight from Illinois to Colorado Springs, you should look to book at least 75 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Illinois to Colorado Springs?

Currently, December is the cheapest month in which you can book a flight from Illinois to Colorado Springs (average of $105). Flying from Illinois to Colorado Springs in April is currently the most expensive (average of $229). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to COS?

Find hourly flight availability from Illinois to Colorado Springs. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 27, 2026.

A simple way to save on the total cost of your ticket is to fly from Illinois to Colorado Springs in the afternoon. If you’re flexible enough to do this you can expect to save up to 22% on your trip compared to booking a flight in the evening.

Weekly flight availability from Illinois to Colorado Springs

Explore weekly flight availability from Illinois to Colorado Springs. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 27, 2026.

The most flights from USIL to COS are scheduled on a Monday (5 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from Illinois to Colorado Springs?

Related info for your journey

Find useful and relevant information for your journey from Illinois to Colorado Springs. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Colorado Springs from Illinois?

    If you book a flight to Colorado Springs from Illinois, you will be flying to Colorado Springs, which is the city’s only airport. Colorado Springs (COS) is located 6.7 mi from the center of Colorado Springs.

  • How long is the flight from Illinois to Colorado Springs?

    There are many flights that can get you from Illinois to Colorado Springs in 7h 17m. Fly via Delta, United Airlines, or Southwest to get the fastest option. Illinois and Colorado Springs are separated by a distance of 771 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Colorado Springs one-way?

    One-way options have recently been found by users for as low as $71 on American Airlines. Other airlines that offer cheap prices include Southwest from $90 and United Airlines from $113 one-way.

  • What are the most popular routes from Illinois to Colorado Springs?

    Most travelers choose Chicago O'Hare Intl - Colorado Springs, Chicago Midway - Colorado Springs or Lambert-St Louis - Colorado Springs when deciding on the best route from Illinois to Colorado Springs.

  • What are the most reliable airlines from Illinois to Colorado Springs?

    Before booking your flight to Colorado Springs from Illinois, check out the most reliable airlines to get you to your destination on time: United Airlines (73%), SkyWest Airlines (73%), American Airlines( 71%).

  • What are the cheapest flights from Illinois to Colorado Springs?

    While on average a flight from Illinois to Colorado Springs is generally $469, our data shows the cheapest flight currently is $175. When looking at the most popular route, (Chicago O'Hare Intl - Colorado Springs), you can expect to pay $271 for that flight.

  • Can I find deals for flights from Illinois to Colorado Springs that include hotel bookings?

    Yes. In addition to deals on Illinois to Colorado Springs flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Colorado Springs?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Colorado Springs.

  • Can I find deals for business class flights from Illinois to Colorado Springs?

    Yes. Cheapflights offers flight deals from Illinois to Colorado Springs by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Colorado Springs?

    Currently, December is the cheapest month in which you can book a flight from Illinois to Colorado Springs (average of $105). Flying from Illinois to Colorado Springs in April is currently the most expensive (average of $229). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Colorado Springs?

Book flights to Colorado Springs if you plan to visit one of these locations
Cañon City

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Alternative routes for Illinois to Colorado Springs

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Top 3 airlines flying from Illinois to Colorado Springs

Discover the top 3 airlines that operate flights from Illinois to Colorado Springs. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$193Average$403FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$246Average$409FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$255Average$398FlexibilityNo cancel feeOn-time63%

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