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$128+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
COS — ORD
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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Cheap flight deals from Colorado Springs to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Colorado Springs (COS) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 21, 2024.

Find 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 November 21, 2024.

This United Airlines deal was found by Cheapflights users on 11/19. 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 12/147:15 amCOS - ORD
1 stop6h 39mUnited Airlines
Wed 12/187:10 amORD - COS
1 stop6h 06mUnited Airlines
Deal found 11/19$274
This Southwest deal was found by Cheapflights users on 11/20. 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 12/133:50 pmCOS - MDW
Nonstop2h 20mSouthwest
Mon 12/163:25 pmMDW - COS
1 stop7h 15mSouthwest
Deal found 11/20$303
This American Airlines deal was found by Cheapflights users on 11/20. 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.
Fri 12/134:41 pmCOS - ORD
1 stop6h 16mAmerican Airlines
Mon 12/165:00 amORD - COS
1 stop7h 27mAmerican Airlines
Deal found 11/20$312
This Southwest deal was found by Cheapflights users on 11/20. 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 12/1310:55 amCOS - ORD
2 stops10h 05mSouthwest
Mon 12/164:00 pmORD - COS
1 stop6h 40mSouthwest
Deal found 11/20$317
This United Airlines deal was found by Cheapflights users on 11/20. 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 12/147:40 amCOS - STL
1 stop7h 58mUnited Airlines
Fri 12/204:43 pmSTL - COS
1 stop5h 15mUnited Airlines
Deal found 11/20$342
This Delta deal was found by Cheapflights users on 11/20. 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.
Sat 12/78:20 amCOS - ORD
2 stops11h 52mDelta
Sun 12/85:40 amORD - COS
1 stop8h 06mDelta
Deal found 11/20$397
This American Airlines deal was found by Cheapflights users on 11/19. 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.
Tue 12/176:00 amCOS - PIA
1 stop8h 04mAmerican Airlines
Tue 12/246:16 amPIA - COS
1 stop28h 56mAmerican Airlines
Deal found 11/19$400
This American Airlines deal was found by Cheapflights users on 11/20. 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.
Tue 12/312:01 pmCOS - STL
1 stop6h 27mAmerican Airlines
Thu 12/51:36 pmSTL - COS
1 stop5h 20mAmerican Airlines
Deal found 11/20$441
This United Airlines deal was found by Cheapflights users on 11/21. 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 11/236:00 amCOS - MLI
2 stops8h 16mUnited Airlines
Fri 11/295:46 pmMLI - COS
1 stop4h 59mUnited Airlines
Deal found 11/21$444
This United Airlines deal was found by Cheapflights users on 11/19. 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 12/171:00 pmCOS - PIA
1 stop6h 56mUnited Airlines
Tue 12/2411:55 amPIA - COS
2 stops9h 04mUnited Airlines
Deal found 11/19$474
This Southwest deal was found by Cheapflights users on 11/20. 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 11/298:35 amCOS - STL
2 stops7h 30mSouthwest
Mon 12/29:35 amSTL - COS
1 stop6h 15mSouthwest
Deal found 11/20$526
This Delta deal was found by Cheapflights users on 11/19. 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 12/41:43 pmCOS - MDW
1 stop7h 03mDelta
Thu 12/56:00 amMDW - COS
1 stop7h 44mDelta
Deal found 11/19$580

Find flights from Colorado Springs to Illinois within your budget

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 2,629,791 searches. Data last updated November 21, 2024.

Fly from

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Fly to

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Route

Depart

Return

Price

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

Sat 12/14

7:15 am-2:54 pm

1 stop6h 39m

Chicago O'Hare Intl

Wed 12/18

7:10 am-12:16 pm

1 stop6h 06m

$274

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 1/15

6:00 am-12:48 pm

1 stop5h 48m

Lambert-St Louis

Mon 1/20

6:15 am-11:27 am

1 stop6h 12m

$302

Colorado SpringsChicago

COS - MDW

COSMDW

Colorado Springs

Fri 12/13

3:50 pm-7:10 pm

Nonstop2h 20m

Chicago Midway

Mon 12/16

3:25 pm-9:40 pm

1 stop7h 15m

$303

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

Fri 12/13

4:41 pm-11:57 pm

1 stop6h 16m

Chicago O'Hare Intl

Mon 12/16

5:00 am-11:27 am

1 stop7h 27m

$312

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

Fri 12/13

10:55 am-10:00 pm

2 stops10h 05m

Chicago O'Hare Intl

Mon 12/16

4:00 pm-9:40 pm

1 stop6h 40m

$317

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 1/15

8:25 am-5:15 pm

2 stops7h 50m

Lambert-St Louis

Mon 1/20

6:25 am-1:15 pm

1 stop7h 50m

$319

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 3/6

5:12 pm-10:25 pm

1 stop4h 13m

Lambert-St Louis

Mon 3/10

7:51 pm-11:28 pm

1 stop4h 37m

$326

Colorado SpringsPeoria

COS - PIA

COSPIA

Colorado Springs

Wed 1/1

6:00 am-1:48 pm

2 stops6h 48m

Greater Peoria

Wed 1/8

10:54 am-9:45 pm

2 stops11h 51m

$358

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

Sat 12/7

8:20 am-9:12 pm

2 stops11h 52m

Chicago O'Hare Intl

Sun 12/8

5:40 am-12:46 pm

1 stop8h 06m

$397

Colorado SpringsPeoria

COS - PIA

COSPIA

Colorado Springs

Tue 12/17

6:00 am-3:04 pm

1 stop8h 04m

Greater Peoria

Tue 12/24

6:16 am-10:12 am

1 stop28h 56m

$400

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

Showing 1-10 of 24 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.

Travel insights for flights from Colorado Springs to Illinois

Get recent, data-driven insights about flights from Colorado Springs to Illinois including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Colorado Springs to Illinois (average of $232). Flying from Colorado Springs to Illinois in June is currently the most expensive (average of $308). 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 November 21, 2024.

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 November 21, 2024.

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

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 November 21, 2024.
See what other customers who have flown with United Airlines, American Airlines and Delta from Colorado Springs to Illinois have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,015 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,759 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,173 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

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.

  • 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 $128. However, be on the lookout for offers from Delta 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 Emirates (92%), United Airlines (91%) or SkyWest Airlines (89%) 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 $152. On average you can expect to pay $870. The most popular route, (Colorado Springs - Chicago O'Hare Intl), can usually be booked for $281.

  • 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, September is the cheapest month in which you can book a flight from Colorado Springs to Illinois (average of $232). Flying from Colorado Springs to Illinois in June is currently the most expensive (average of $308). 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 2,629,791 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$188Average$505FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$192Average$399FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$250Average$430FlexibilityNo cancel feeOn-time69%
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