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Illinois

$98+ Cheap flights from Colorado Springs (COS) to Illinois

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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
COS — ORD
févr. 26 — mars 51
jeu. 2/26
jeu. 3/5
1 adult, Economy
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Cheap flight deals from Colorado Springs to Illinois

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

This United Airlines deal was found by Cheapflights users on 1/24. 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.
sam. 2/141:40 pm
COS
-
ORD
1 stop6h 49m
United Airlines
mar. 2/178:45 am
ORD
-
COS
Nonstop3h 10m
United Airlines
Deal found 1/24$205
This American Airlines deal was found by Cheapflights users on 1/24. 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.
jeu. 4/3012:21 pm
COS
-
ORD
Nonstop2h 45m
American Airlines
mar. 5/129:50 am
ORD
-
COS
Nonstop3h 01m
American Airlines
Deal found 1/24$212
This Delta deal was found by Cheapflights users on 1/24. 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.
jeu. 3/512:00 pm
COS
-
ORD
1 stop8h 52m
Delta
lun. 3/99:50 am
ORD
-
COS
2 stops11h 38m
Delta
Deal found 1/24$220
This American Airlines deal was found by Cheapflights users on 1/26. 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.
jeu. 2/2612:30 pm
COS
-
ORD
Nonstop2h 40m
American Airlines
sam. 2/287:20 am
ORD
-
COS
1 stop6h 28m
American Airlines
Deal found 1/26$223
This United Airlines deal was found by Cheapflights users on 1/26. 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.
jeu. 2/195:05 pm
COS
-
ORD
1 stop4h 47m
United Airlines
sam. 2/218:45 am
ORD
-
COS
Nonstop3h 10m
United Airlines
Deal found 1/26$225
This American Airlines deal was found by Cheapflights users on 1/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/2512:07 pm
COS
-
ORD
Nonstop2h 43m
American Airlines
sam. 8/299:45 am
ORD
-
COS
Nonstop2h 51m
American Airlines
Deal found 1/27$229
This American Airlines deal was found by Cheapflights users on 1/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 4/912:21 pm
COS
-
ORD
Nonstop2h 45m
American Airlines
mar. 4/149:50 am
ORD
-
COS
Nonstop3h 01m
American Airlines
Deal found 1/27$230
This Southwest deal was found by Cheapflights users on 1/24. 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.
jeu. 4/307:20 pm
COS
-
MDW
1 stop8h 40m
Southwest
mar. 5/122:55 pm
MDW
-
COS
1 stop6h 50m
Southwest
Deal found 1/24$232
This Delta deal was found by Cheapflights users on 1/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 2/2012:00 pm
COS
-
ORD
1 stop8h 52m
Delta
lun. 2/236:45 am
ORD
-
COS
1 stop6h 40m
Delta
Deal found 1/25$232
This Delta deal was found by Cheapflights users on 1/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 3/1212:10 pm
COS
-
ORD
1 stop8h 24m
Delta
mar. 3/179:50 am
ORD
-
COS
2 stops11h 38m
Delta
Deal found 1/25$237
This United Airlines deal was found by Cheapflights users on 1/25. 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.
ven. 6/1212:16 pm
COS
-
ORD
Nonstop2h 46m
United Airlines
mar. 6/161:05 pm
ORD
-
COS
1 stop5h 51m
United Airlines
Deal found 1/25$239
This Southwest deal was found by Cheapflights users on 1/24. 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.
mer. 3/186:50 pm
COS
-
MDW
1 stop9h 30m
Southwest
mar. 3/315:35 pm
MDW
-
COS
1 stop4h 25m
Southwest
Deal found 1/24$249

Find flight deals from Colorado Springs to Illinois

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

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$205
(United Airlines)

One-way from

$98
(American Airlines)

Popular in

November

Cheapest in

February

Average price

$212

Good round-trip deal

$321 or less

Good one-way deal

$158 or less
Provider with most accurate pricing for Denver Intl-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Chicago (CHI) flights.
Search Deals
From Colorado Springs to Illinois
Search Deals
One-way flight from Colorado Springs to Illinois
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Colorado Springs to Illinois.
Search Deals
Price to beat on a one-way flight from Colorado Springs to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado Springs to Illinois 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 janvier 27, 2026.
Use the filters below to find and compare flights from Colorado Springs to Illinois that are best for you.

Fly from

Colorado Springs

Fly to

Illinois

Route

Depart

Return

Price

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

jeu. 3/5

7:55 am-5:42 pm

1 stop8h 47m

Chicago O'Hare Intl

lun. 3/9

5:30 am-12:31 pm

1 stop8h 01m

$215

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

sam. 2/14

1:40 pm-7:50 pm

1 stop5h 10m

Chicago O'Hare Intl

mar. 2/17

7:10 am-10:52 am

1 stop4h 42m

$215

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

jeu. 3/12

12:10 pm-9:34 pm

1 stop8h 24m

Chicago O'Hare Intl

mar. 3/17

7:10 am-12:33 pm

1 stop6h 23m

$215

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

ven. 2/20

12:00 pm-9:52 pm

1 stop8h 52m

Chicago O'Hare Intl

lun. 2/23

6:45 am-12:25 pm

1 stop6h 40m

$232

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

jeu. 4/9

1:39 pm-10:34 pm

1 stop7h 55m

Chicago O'Hare Intl

mar. 4/14

9:50 am-11:51 am

Nonstop3h 01m

$247

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

ven. 2/20

4:49 pm-12:55 am

1 stop7h 06m

Chicago O'Hare Intl

lun. 2/23

10:00 am-12:00 pm

Nonstop3h 00m

$247

Colorado SpringsChicago

COS - MDW

COSMDW

Colorado Springs

mer. 3/18

6:50 pm-5:20 am

1 stop9h 30m

Chicago Midway

mar. 3/31

5:35 pm-9:00 pm

1 stop4h 25m

$249

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

ven. 2/20

3:40 pm-9:29 pm

1 stop4h 49m

Chicago O'Hare Intl

dim. 2/22

7:10 am-10:52 am

1 stop4h 42m

$249

Colorado SpringsChicago

COS - MDW

COSMDW

Colorado Springs

ven. 7/3

1:40 pm-9:45 pm

1 stop7h 05m

Chicago Midway

mar. 7/7

6:00 am-12:48 pm

1 stop7h 48m

$249

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

jeu. 2/26

1:40 pm-7:50 pm

1 stop5h 10m

Chicago O'Hare Intl

sam. 2/28

2:40 pm-6:20 pm

1 stop4h 40m

$250

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 52 results
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Best time to book a flight from Colorado Springs to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Colorado Springs 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 Colorado Springs to Illinois

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

Currently, July is the cheapest month in which you can book a flight from Colorado Springs to Illinois (average of $46). Flying from Colorado Springs to Illinois in June is currently the most expensive (average of $109). 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 COS to IL?

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado Springs to Illinois as you normally would.

Weekly flight availability from Colorado Springs to Illinois

Explore weekly flight availability from Colorado Springs to Illinois. 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 janvier 27, 2026.

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

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

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated janvier 27, 2026.
Read reviews from past customers who have flown Southwest, United Airlines, and American Airlines from Colorado Springs to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,268 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,205 reviews
Southwest
8.0
Very good
4,268 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,197 reviews
Southwest
8.0
Very good
4,268 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Colorado Springs to Illinois. 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 from for flights from Colorado Springs to Illinois?

    If you book a flight to Illinois from Colorado Springs, you will be flying from 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 Colorado Springs to Illinois?

    Delta, United Airlines, and Southwest can get you from Colorado Springs to Illinois in just under 5h 10m. Your travel time can differ by up to 4h 20m. Colorado Springs and Illinois are separated by a distance of 908 mi. This flight may include one or multiple stops.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $75. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Colorado Springs to Illinois for a low price.

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

    When deciding which route to take from Colorado Springs to Illinois consider Colorado Springs - Chicago O'Hare Intl, Colorado Springs - Chicago Midway or Colorado Springs - Lambert-St Louis as they are the most popular.

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

    No one likes to see their flight delayed. When booking a flight from Colorado Springs to Illinois consider choosing Lufthansa (88%), United Airlines (82%) or Emirates (81%) as they are the most reliable in getting you off to your destination on time.

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

    The cheapest flight price from Colorado Springs to Illinois is $128. On average you can expect to pay $607. The most popular route, (Colorado Springs - Chicago O'Hare Intl), can usually be booked for $215.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Colorado Springs to Illinois 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 Colorado Springs to Illinois?

    Currently, July is the cheapest month in which you can book a flight from Colorado Springs to Illinois (average of $46). Flying from Colorado Springs to Illinois in June is currently the most expensive (average of $109). 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.

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Alternative routes for Colorado Springs to Illinois

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Top 3 airlines flying from Colorado Springs to Illinois

Discover the top 3 airlines that operate flights from Colorado Springs to Illinois. 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 janvier 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$166Average$441FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$224Average$321FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$288Average$430FlexibilityNo cancel feeOn-time69%

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