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Colorado Springs

$73+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — COS
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 December 4, 2025.

This American Airlines deal was found by Cheapflights users on 12/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/219:50 amORD - COS
Nonstop3h 02mAmerican Airlines
Wed 1/71:06 pmCOS - ORD
Nonstop2h 49mAmerican Airlines
Deal found 12/2$279
This United Airlines deal was found by Cheapflights users on 12/1. 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.
Mon 12/228:08 pmORD - COS
1 stop4h 51mUnited Airlines
Sun 1/185:50 amCOS - ORD
1 stop4h 44mUnited Airlines
Deal found 12/1$286
This American Airlines deal was found by Cheapflights users on 12/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:10 amMLI - COS
1 stop5h 31mAmerican Airlines
Thu 12/114:34 pmCOS - MLI
1 stop5h 09mAmerican Airlines
Deal found 12/2$354
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Wed 12/106:30 amMLI - COS
1 stop5h 56mUnited Airlines
Wed 12/179:24 amCOS - MLI
1 stop6h 41mUnited Airlines
Deal found 12/3$379
This Southwest deal was found by Cheapflights users on 12/3. 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 12/252:15 pmORD - COS
1 stop6h 10mSouthwest
Thu 1/15:15 amCOS - ORD
1 stop6h 45mSouthwest
Deal found 12/3$381
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Wed 12/243:42 pmORD - COS
1 stop7h 24mUnited Airlines
Mon 12/296:00 amCOS - ORD
Nonstop2h 52mUnited Airlines
Deal found 12/2$388
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Wed 12/247:10 amORD - COS
1 stop4h 42mUnited Airlines
Sun 12/286:00 amCOS - ORD
Nonstop2h 52mUnited Airlines
Deal found 12/3$389
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Mon 12/227:50 pmORD - COS
Nonstop3h 00mUnited Airlines
Fri 12/265:10 pmCOS - ORD
1 stop4h 50mUnited Airlines
Deal found 12/2$392
This Southwest deal was found by Cheapflights users on 12/3. 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 12/2410:05 amMDW - COS
1 stop7h 10mSouthwest
Sun 12/288:55 pmCOS - MDW
1 stop12h 45mSouthwest
Deal found 12/3$396
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Mon 12/225:50 pmORD - COS
1 stop5h 16mUnited Airlines
Thu 12/255:10 pmCOS - ORD
1 stop5h 02mUnited Airlines
Deal found 12/3$402
This Southwest deal was found by Cheapflights users on 12/3. 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.
Tue 12/234:20 pmMDW - COS
1 stop8h 55mSouthwest
Mon 12/296:25 pmCOS - MDW
1 stop4h 15mSouthwest
Deal found 12/3$402
This Southwest deal was found by Cheapflights users on 12/3. 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 12/257:05 amMDW - COS
1 stop5h 35mSouthwest
Sun 12/288:55 pmCOS - MDW
1 stop12h 45mSouthwest
Deal found 12/3$406

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 December 4, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$145
(American Airlines)

One-way from

$73
(American Airlines)

Popular in

December

Cheapest in

October

Average price

$235

Good round-trip deal

$261 or less

Good one-way deal

$165 or less
Provider with most accurate pricing for Chicago (CHI)-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Denver Intl flights.
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From Illinois to Colorado Springs
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One-way flight from Illinois to Colorado Springs
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Highest demand for flights based on searches. 2% potential increase in price ($5 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from Illinois to Colorado Springs.
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Price to beat on a one-way flight from Illinois to Colorado Springs.
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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 December 4, 2025.
Use the filters below to find and compare flights from Illinois to Colorado Springs that are best for you.

Fly from

Illinois

Fly to

Colorado Springs

Route

Depart

Return

Price

ChicagoColorado Springs

ORD - COS

ORDCOS

Chicago O'Hare Intl

Wed 2/18

8:45 am-10:55 am

Nonstop3h 10m

Colorado Springs

Sat 2/21

11:36 am-3:17 pm

Nonstop2h 41m

$145

ChicagoColorado Springs

ORD - COS

ORDCOS

Chicago O'Hare Intl

Fri 1/9

8:50 am-11:02 am

Nonstop3h 12m

Colorado Springs

Thu 1/15

11:43 am-3:35 pm

Nonstop2h 52m

$181

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Wed 2/25

5:55 pm-10:08 pm

1 stop5h 13m

Colorado Springs

Sun 3/1

1:43 pm-7:25 pm

1 stop4h 42m

$183

ChicagoColorado Springs

MDW - COS

MDWCOS

Chicago Midway

Thu 1/29

5:55 am-1:05 pm

1 stop8h 10m

Colorado Springs

Tue 2/3

10:15 am-7:00 pm

1 stop7h 45m

$183

ChicagoColorado Springs

ORD - COS

ORDCOS

Chicago O'Hare Intl

Sat 1/10

5:20 pm-10:23 pm

1 stop6h 03m

Colorado Springs

Sat 1/17

12:00 pm-9:52 pm

1 stop8h 52m

$197

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Tue 1/13

7:10 am-12:22 pm

1 stop6h 12m

Colorado Springs

Wed 1/14

12:00 pm-9:35 pm

1 stop8h 35m

$197

ChicagoColorado Springs

MDW - COS

MDWCOS

Chicago Midway

Sat 1/10

7:00 am-1:30 pm

1 stop7h 30m

Colorado Springs

Sat 1/17

8:00 am-6:30 pm

2 stops9h 30m

$199

ChicagoColorado Springs

MDW - COS

MDWCOS

Chicago Midway

Wed 2/18

6:00 am-1:05 pm

2 stops8h 05m

Colorado Springs

Sat 2/21

9:45 am-5:00 pm

2 stops6h 15m

$199

ChicagoColorado Springs

ORD - COS

ORDCOS

Chicago O'Hare Intl

Tue 1/13

7:00 am-10:57 am

1 stop4h 57m

Colorado Springs

Tue 1/20

5:05 pm-11:59 pm

1 stop5h 54m

$201

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Mon 1/19

8:45 am-2:34 pm

1 stop6h 49m

Colorado Springs

Mon 1/26

1:25 pm-8:58 pm

1 stop6h 33m

$201

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 56 results
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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

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

Currently, September is the cheapest month in which you can book a flight from Illinois to Colorado Springs (average of $49). Flying from Illinois to Colorado Springs in July is currently the most expensive (average of $114). 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 December 4, 2025.

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 15% 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 December 4, 2025.

The most flights from USIL to COS are scheduled on a Monday (5 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (4 on average).

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 3h 10m. Fly via United Airlines, American Airlines, or Southwest to get the fastest option. Illinois and Colorado Springs are separated by a distance of 908 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 $114 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: American Airlines (71%), SkyWest Airlines (70%), United Airlines( 68%).

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

    While on average a flight from Illinois to Colorado Springs is generally $337, our data shows the cheapest flight currently is $78. When looking at the most popular route, (Chicago O'Hare Intl - Colorado Springs), you can expect to pay $145 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, September is the cheapest month in which you can book a flight from Illinois to Colorado Springs (average of $49). Flying from Illinois to Colorado Springs in July is currently the most expensive (average of $114). 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$163Average$415FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$241Average$392FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$248Average$430FlexibilityNo cancel feeOn-time69%

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