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$142+ 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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
COS — ORD
dic. 23 — dic. 301
lun. 12/23
lun. 12/30
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 diciembre 18, 2024.

Round-trip from

$277
(American Airlines)

One-way from

$142
(Southwest)
From Colorado Springs to Illinois
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One-way flight from Colorado Springs to Illinois
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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 diciembre 18, 2024.

This Southwest deal was found by Cheapflights users on 12/17. 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.
mar. 12/312:50 pmCOS - STL
1 stop7h 20mSouthwest
sáb. 1/46:40 pmSTL - COS
1 stop6h 50mSouthwest
Deal found 12/17$382
This Southwest deal was found by Cheapflights users on 12/17. 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.
mar. 12/311:00 pmCOS - MDW
1 stop7h 15mSouthwest
dom. 1/59:35 amMDW - COS
Nonstop2h 40mSouthwest
Deal found 12/17$383
This United Airlines deal was found by Cheapflights users on 12/17. 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.
mar. 12/316:02 amCOS - ORD
Nonstop2h 51mUnited Airlines
dom. 1/54:00 pmORD - COS
1 stop7h 03mUnited Airlines
Deal found 12/17$383
This Southwest deal was found by Cheapflights users on 12/17. 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.
mar. 12/316:45 amCOS - ORD
1 stop9h 00mSouthwest
dom. 1/53:10 pmORD - COS
2 stops9h 30mSouthwest
Deal found 12/17$397
This United Airlines deal was found by Cheapflights users on 12/17. 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.
mar. 12/313:30 pmCOS - STL
1 stop3h 56mUnited Airlines
sáb. 1/411:30 amSTL - COS
2 stops11h 33mUnited Airlines
Deal found 12/17$406
This Delta deal was found by Cheapflights users on 12/17. 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.
dom. 12/221:58 pmCOS - STL
1 stop6h 44mDelta
mié. 12/252:15 pmSTL - COS
1 stop6h 24mDelta
Deal found 12/17$591
This American Airlines deal was found by Cheapflights users on 12/16. 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.
sáb. 12/2112:14 pmCOS - STL
1 stop6h 16mAmerican Airlines
dom. 12/295:21 amSTL - COS
1 stop5h 51mAmerican Airlines
Deal found 12/16$787
This American Airlines deal was found by Cheapflights users on 12/17. 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.
dom. 12/2212:14 pmCOS - ORD
1 stop8h 05mAmerican Airlines
jue. 12/264:55 pmORD - COS
1 stop7h 56mAmerican Airlines
Deal found 12/17$826
This Delta deal was found by Cheapflights users on 12/17. 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.
vie. 12/208:00 amCOS - ORD
1 stop9h 15mDelta
mar. 12/2410:05 amORD - COS
2 stops10h 34mDelta
Deal found 12/17$831
This Delta deal was found by Cheapflights users on 12/17. 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.
vie. 12/201:51 pmCOS - MDW
1 stop7h 15mDelta
mar. 12/2411:48 amMDW - COS
2 stops8h 51mDelta
Deal found 12/17$909

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 2,558,603 searches. Data last updated diciembre 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

sáb. 1/18

10:21 am-4:23 pm

1 stop5h 02m

Lambert-St Louis

sáb. 1/25

3:41 pm-8:10 pm

1 stop5h 29m

$277

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

sáb. 1/18

6:00 am-3:35 pm

1 stop8h 35m

Lambert-St Louis

sáb. 1/25

10:22 am-7:11 pm

2 stops9h 49m

$281

Colorado SpringsChicago

COS - MDW

COSMDW

Colorado Springs

vie. 1/17

2:00 pm-5:20 pm

Nonstop2h 20m

Chicago Midway

mié. 1/22

12:45 pm-2:25 pm

Nonstop2h 40m

$298

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

jue. 1/9

12:54 pm-4:42 pm

Nonstop2h 48m

Chicago O'Hare Intl

lun. 1/13

9:30 am-11:34 am

Nonstop3h 04m

$301

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

mié. 1/15

6:00 am-3:45 pm

1 stop8h 45m

Chicago O'Hare Intl

mié. 1/22

1:45 pm-7:11 pm

1 stop6h 26m

$302

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

vie. 1/17

4:15 pm-10:35 pm

1 stop5h 20m

Chicago O'Hare Intl

mié. 1/22

11:25 am-8:00 pm

2 stops9h 35m

$321

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

mié. 2/5

6:15 am-12:55 pm

1 stop5h 40m

Lambert-St Louis

mié. 2/5

5:10 pm-9:35 pm

1 stop5h 25m

$326

Colorado SpringsChicago

COS - MDW

COSMDW

Colorado Springs

jue. 1/9

8:20 am-5:47 pm

2 stops8h 27m

Chicago Midway

lun. 1/13

10:19 am-7:11 pm

2 stops9h 52m

$340

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

sáb. 1/18

1:35 pm-8:43 pm

1 stop6h 08m

Lambert-St Louis

vie. 1/24

4:36 pm-9:58 pm

1 stop6h 22m

$371

Colorado SpringsEvansville

COS - EVV

COSEVV

Colorado Springs

jue. 1/2

4:34 pm-11:33 pm

1 stop5h 59m

Evansville Dress Regional

lun. 1/6

3:50 pm-8:16 pm

1 stop5h 26m

$638

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 22 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 diciembre 18, 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.

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 diciembre 18, 2024.
See what other customers who have flown with United Airlines, Southwest 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
4,848 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,055 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 $142. However, be on the lookout for offers from Delta and American 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 United Airlines (94%), SkyWest Airlines (92%) or Emirates (92%) 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 $165. On average you can expect to pay $448. The most popular route, (Colorado Springs - Chicago O'Hare Intl), can usually be booked for $301.

  • 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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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 diciembre 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$188Average$503FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$192Average$401FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$250Average$431FlexibilityNo cancel feeOn-time69%
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