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Colorado Springs

$106+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — COS
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Find 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 October 14, 2025.

This Delta deal was found by Cheapflights users on 10/14. 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.
Thu 11/207:05 amSTL - COS
1 stop6h 32mDelta
Mon 11/246:02 pmCOS - STL
1 stop5h 44mDelta
Deal found 10/14$217
This Delta deal was found by Cheapflights users on 10/12. 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.
Mon 11/106:00 amSTL - COS
2 stops12h 22mDelta
Mon 11/176:02 pmCOS - STL
2 stops13h 26mDelta
Deal found 10/12$227
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:30 amMDW - COS
2 stops27h 21mMultiple Airlines
Mon 11/1011:21 amCOS - MDW
1 stop12h 09mMultiple Airlines
Deal found 10/12$238
This United Airlines deal was found by Cheapflights users on 10/12. 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.
Fri 10/319:20 amORD - COS
Nonstop3h 06mUnited Airlines
Mon 11/106:20 pmCOS - ORD
1 stop4h 39mUnited Airlines
Deal found 10/12$248
This Southwest deal was found by Cheapflights users on 10/12. 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 10/3112:50 pmMDW - COS
1 stop6h 55mSouthwest
Mon 11/103:10 pmCOS - MDW
Nonstop2h 20mSouthwest
Deal found 10/12$248
This American Airlines deal was found by Cheapflights users on 10/13. 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.
Mon 11/106:40 amPIA - COS
1 stop6h 08mAmerican Airlines
Mon 11/175:17 pmCOS - PIA
1 stop4h 49mAmerican Airlines
Deal found 10/13$249
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Sat 11/83:55 pmMLI - COS
1 stop6h 52mUnited Airlines
Thu 11/279:29 amCOS - MLI
1 stop4h 51mUnited Airlines
Deal found 10/14$249
This American Airlines deal was found by Cheapflights users on 10/14. 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.
Sat 12/610:06 amORD - COS
Nonstop3h 02mAmerican Airlines
Wed 12/1012:36 pmCOS - ORD
Nonstop2h 45mAmerican Airlines
Deal found 10/14$251
This United Airlines deal was found by Cheapflights users on 10/13. 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 10/293:55 pmMLI - COS
1 stop6h 52mUnited Airlines
Tue 11/41:53 pmCOS - MLI
1 stop6h 08mUnited Airlines
Deal found 10/13$254
This United Airlines deal was found by Cheapflights users on 10/12. 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.
Sat 11/87:45 pmORD - COS
Nonstop3h 02mUnited Airlines
Mon 11/1012:30 pmCOS - ORD
Nonstop2h 46mUnited Airlines
Deal found 10/12$258
This Southwest deal was found by Cheapflights users on 10/12. 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 10/317:15 pmMDW - COS
Nonstop2h 35mSouthwest
Mon 11/35:15 amCOS - MDW
1 stop5h 00mSouthwest
Deal found 10/12$262
This Southwest deal was found by Cheapflights users on 10/12. 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 10/3112:40 pmORD - COS
2 stops8h 10mSouthwest
Mon 11/106:30 amCOS - ORD
1 stop7h 55mSouthwest
Deal found 10/12$263

Cheap 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 October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$217
(Delta)

One-way from

$106
(United Airlines)

Popular in

December

Cheapest in

November

Average price

$194

Good round-trip deal

$256 or less

Good one-way deal

$148 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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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 14, 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

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Thu 12/11

7:05 am-12:36 pm

1 stop6h 31m

Colorado Springs

Mon 12/15

6:00 pm-12:48 am

1 stop5h 48m

$217

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Mon 11/10

1:55 pm-8:40 pm

1 stop7h 45m

Colorado Springs

Mon 11/17

6:02 pm-12:46 am

1 stop5h 44m

$217

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Thu 11/20

7:05 am-12:37 pm

1 stop6h 32m

Colorado Springs

Mon 11/24

6:02 pm-12:46 am

1 stop5h 44m

$217

ChicagoColorado Springs

MDW - COS

MDWCOS

Chicago Midway

Fri 10/31

7:15 pm-8:50 pm

Nonstop2h 35m

Colorado Springs

Mon 11/10

3:10 pm-6:30 pm

Nonstop2h 20m

$238

PeoriaColorado Springs

PIA - COS

PIACOS

Greater Peoria

Mon 11/10

6:40 am-11:48 am

1 stop6h 08m

Colorado Springs

Mon 11/17

5:17 pm-11:06 pm

1 stop4h 49m

$249

MolineColorado Springs

MLI - COS

MLICOS

Moline Quad-City

Sat 11/8

3:55 pm-9:47 pm

1 stop6h 52m

Colorado Springs

Thu 11/27

9:29 am-3:20 pm

1 stop4h 51m

$249

ChicagoColorado Springs

ORD - COS

ORDCOS

Chicago O'Hare Intl

Sat 12/6

10:06 am-12:08 pm

Nonstop3h 02m

Colorado Springs

Wed 12/10

12:36 pm-4:21 pm

Nonstop2h 45m

$251

MolineColorado Springs

MLI - COS

MLICOS

Moline Quad-City

Wed 10/29

3:55 pm-9:47 pm

1 stop6h 52m

Colorado Springs

Tue 11/4

1:53 pm-9:01 pm

1 stop6h 08m

$254

ChicagoColorado Springs

ORD - COS

ORDCOS

Chicago O'Hare Intl

Sat 11/8

7:45 pm-9:47 pm

Nonstop3h 02m

Colorado Springs

Mon 11/10

12:30 pm-4:16 pm

Nonstop2h 46m

$258

ChicagoColorado Springs

ORD - COS

ORDCOS

Chicago O'Hare Intl

Wed 12/3

5:18 am-11:46 am

1 stop7h 28m

Colorado Springs

Wed 12/10

12:36 pm-4:21 pm

Nonstop2h 45m

$261

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 60 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 $112). 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 October 14, 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 17% 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 October 14, 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 2h 35m. Fly via Delta, Southwest, or American Airlines to get the fastest option. Illinois and Colorado Springs are separated by a distance of 915 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 $106 on United Airlines. Other airlines that offer cheap prices include Delta from $109 and Southwest from $162 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 (86%), SkyWest Airlines (82%), American Airlines( 75%).

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

    While on average a flight from Illinois to Colorado Springs is generally $269, our data shows the cheapest flight currently is $113. When looking at the most popular route, (Chicago O'Hare Intl - Colorado Springs), you can expect to pay $251 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 $112). 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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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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$228Average$407FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$248Average$382FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$248Average$433FlexibilityNo cancel feeOn-time69%

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