$124 Find Cheap Flights from Colorado Springs to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Colorado Springs to Illinois departing on 7/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Colorado Springs to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Colorado Springs to Illinois, as well as popular online travel agencies
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Best Illinois Flight Deals from Colorado Springs

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicagononstop$251
Moline
Moline2 stops$302
Peoria
Peoria1 stop$259
Bloomington
Bloomington1 stop$415
Champaign
Champaign1 stop$570
St. Louis
St. Louis1 stop$217
Chicago
Chicagononstop$251
Moline
Moline2 stops$302
Peoria
Peoria1 stop$259
Bloomington
Bloomington1 stop$415
Champaign
Champaign1 stop$570
St. Louis
St. Louis1 stop$217

Cheap Flights from Colorado Springs to Illinois

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Colorado Springs to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Colorado Springs to Illinois

Tue, Sep 30 - Tue, Oct 7
Delta Logo
5:55 pm - 12:37 amCOS-STL
5h 42m1 stop
Delta Logo
7:20 am - 12:57 pmSTL-COS
6h 37m1 stop
$217Delta
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Tue, Aug 5 - Tue, Aug 12
Delta Logo
5:55 pm - 12:38 amCOS-STL
5h 43m1 stop
Delta Logo
8:46 am - 5:15 pmSTL-COS
9h 29m2 stops
$222Delta
Find Deal
Mon, Aug 11 - Sat, Aug 16
Southwest Logo
5:30 am - 1:35 pmCOS-STL
7h 05m1 stop
Southwest Logo
5:45 am - 10:20 amSTL-COS
5h 35m1 stop
$234Southwest
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Tue, Aug 12 - Tue, Aug 19
Southwest Logo
11:55 am - 3:15 pmCOS-MDW
2h 20mnonstop
Southwest Logo
2:45 pm - 4:10 pmMDW-COS
2h 25mnonstop
$251Southwest
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Sat, Aug 30 - Sat, Sep 6
American Airlines Logo
12:07 pm - 3:50 pmCOS-ORD
2h 43mnonstop
American Airlines Logo
9:56 am - 11:51 amORD-COS
2h 55mnonstop
$251American Airlines
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Thu, Nov 6 - Sun, Nov 9
American Airlines Logo
12:13 pm - 8:00 pmCOS-STL
6h 47m1 stop
American Airlines Logo
7:49 am - 11:30 amSTL-COS
4h 41m1 stop
$253American Airlines
Find Deal
Tue, Jul 15 - Sat, Jul 26
United Airlines Logo
6:05 am - 9:55 amCOS-ORD
2h 50mnonstop
United Airlines Logo
7:40 pm - 9:44 pmORD-COS
3h 04mnonstop
$283United Airlines
Find Deal
Mon, Sep 29 - Mon, Oct 6
United Airlines Logo
12:54 pm - 8:46 pmCOS-STL
6h 52m1 stop
United Airlines Logo
3:23 pm - 9:41 pmSTL-COS
7h 18m1 stop
$287United Airlines
Find Deal
Fri, Jul 11 - Fri, Jul 18
 Logo
5:09 pm - 6:03 amCOS-ORD
11h 54m2 stops
 Logo
7:08 am - 4:19 pmORD-COS
10h 11m2 stops
Fri, Aug 1 - Sun, Aug 10
 Logo
5:09 pm - 6:03 amCOS-ORD
11h 54m2 stops
 Logo
8:50 am - 8:55 amORD-COS
25h 05m1 stop
Useful Info

KAYAK's insights & trends for Colorado Springs to Illinois flights

Get data-powered insights and trends into flights from Colorado Springs to Illinois to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Colorado Springs to Illinois flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Colorado Springs to Illinois.

The cheapest ticket to Illinois from Colorado Springs found in the last 72 hours was to Chicago, at $257 round-trip. The most popular route is from Colorado Springs (COS) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $268.

Can I save money by flying with a layover from Colorado Springs to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $383 on average.

What is the cheapest month to fly from Colorado Springs to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Colorado Springs to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Colorado Springs to Illinois is February, when tickets cost $309 (return) on average. On the other hand, the most expensive months are November and October, when the average cost of round-trip tickets is $413 and $409 respectively.

What’s the cheapest day of the week to fly from Colorado Springs to Illinois?

The average price of all round-trip flights from Colorado Springs to Illinois clicked on KAYAK for each day over the last 12 months.

For Colorado Springs to Illinois, Wednesday is the cheapest day to fly on average and Monday is the most expensive. Flying from Illinois back to Colorado Springs, the best deals are generally found on Saturday, with Friday being the most expensive.

How far in advance should I book a flight from Colorado Springs to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Colorado Springs to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Colorado Springs to Illinois, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.


Good to know

Low seasonFebruary
High seasonSeptember
Cheapest flight$124
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Colorado Springs to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Colorado Springs to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Colorado Springs to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Colorado Springs to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Colorado Springs to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Colorado Springs to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Colorado Springs to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado Springs to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Colorado Springs to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the afternoon, when round-trip flights cost $446 on average. Morning departures are around 5% more expensive than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the morning, which is peak travel time and where the average cost of a ticket is $483.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Colorado Springs to the following destinations at these prices or less: Chicago $199 one-way - $291 round-trip; Chicago $158 one-way - $341 round-trip

Top 3 airlines serving from Colorado Springs to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Colorado Springs to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Colorado Springs to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4287 reviews
7.6Entertainment
7.1Food
8.2Boarding
8.0Comfort
8.6Crew
Airline reviews

I would have liked to arrive on time - not 5 hours late!

4.0 OkayAnonymous, Apr 2025DEN - SEA
Read more Southwest reviews

I would have liked to arrive on time - not 5 hours late!

1.5 hour delay, poor service, no compassion from the crew. Terrible experience

Our flight was diverted from being a non-stop to getting within 150 miles and requiring another plane. We heard 4 or 5 different versions from SW as to why we had to stop, then wait for a replacement plane. Five hour delay, weather did not come up as a single excuse.... communication was not clear and well explained. No one really took charge!

Flight was awfully bumpy and landing was a bit jolting. I was in the restroom when snacks and drinks were served and was not asked if i wanted any. I had to ask for water finally.

I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.

It seems as though the provisions are even less. Although SWA used to be an economy Airline, that isn't really the case anymore. I paid over $700. for a round trip to Denver and I could have flown just about any airline for the price. The drinks are now in a 6-ounce cup and with ice I'm sure a can would fill more than 2 cups. However, I am very proud of SWA for using paper rather than continuing to contribute to the millions of plastic cups being used each day. I've thought of this fr many years and am so glad to see it come to fruition, if not by only SWA so far.

My original flight was extremely delayed but I was able to join the standby list for an earlier flight. I was grateful for this feature but I wish I could’ve gotten my standby confirmation sooner.

I like that it was on time and the staff was friendly.

No space for our carryon and needed to check at plane before boarding !

Flight was ok. Boarding wasn’t fun. Flights were delayed by 12 minutes on each leg.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The crew were very nice. I would have appreciated a pillow for comfort. I had a special meal that was sloppy, but the salad was great. Thanks

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

The flight was 2 hour delayed, otherwise everything was excellent. The delay was due to the hourly limit requirement so given that as a reason, I'm happy with the flight!

Not sure the logic of the boarding in Groups. I was loaded first on the aisle. Then the guy in the middle. Then the guy by the window. Constantly holding up the other people boarding behind them with us blocking the aisle and this happened in most of the other rows

To start, I’d like to say that every American Airline personnel I interacted with on the ground, especially flight crew, was very friendly and did their best to help me out. Despite this, however, my experience with the airline was an entire mess. The 7:19 PM flight was heavily delayed due to weather, and pushed to 10:30 AM the next morning. Because of this, I had to spend the night inside of the airport. At some point later in the night, I got an email saying that the flight had been canceled. I called the support number, and the representative on the other line told me that the flight was still on and that I didn’t need to rebook. The next morning, no one came to the gate to open the door for the crew until almost 11 AM. By this time the flight crew had been waiting for over an hour, and they had called management to get someone to open the door for them multiple times. Around 11:30, the gate screen had changed to a different flight. I ended up buying a last minute ticket with Southwest airline just to get to Chicago, because the next flight with American wasn’t until 7:19 pm that day. Now, earlier that morning my suitcase had been sent ahead of me to ORD. I went to baggage claim to ask them if I could have my suitcase forwarded to where I was staying. The representative at SDF baggage claim said they could and put the claim in for me. As I was going back through TSA, I got an email that the airline had found my suitcase, but the next step was to send it BACK to SDF. I called the airline support number again, and I made it clear that my suitcase needed to stay in Chicago and to not come back to SDF. The representative told me that they would hold my suitcase at ORD and that it wasn’t going to be forwarded anywhere. Once I got there, I found that they had loaded my suitcase onto a plane to send it back to SDF. Thankfully, I had gotten to the baggage claim counter in time for them to put in a request to bring my suitcase back up. My refund with the airline is processing already, but because of this entire experience and miscommunication at every turn of the way, I will not book with American Airlines in the future.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

Crew professional. Easy bag drop off. On time. Good entertainment.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

Per usual, flight status, staff courtesy and professionalism were excellent

Everything was on time, we arrived early, everything worked well.

The only thing is if Wi-Fi is available after you land and taxi to the gate. It takes forever to get to the gate, and having the Wi-Fi continue would be great to bide the time at least 5 minutes before you arrive at the entrance. That is my only comment; otherwise, everything was good.

Everything you need to know for your flight from Colorado Springs to Illinois

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