$113+ 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — COS
Aug 2 — Aug 91
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Colorado Springs with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Colorado Springs
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Cheapest flights from Illinois to Colorado SpringsExplore 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 July 3, 2026.
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 July 3, 2026.
This Delta deal was found by Cheapflights users on 6/29. 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 8/155:00 pm
STL
- COS
1 stop6h 28m
Delta
Sat 8/226:30 am
COS
- STL
1 stop7h 03m
Delta
Deal found 6/29![Delta logo]()
$225
This Delta deal was found by Cheapflights users on 6/29. 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.
Tue 8/253:50 pm
STL
- COS
2 stops7h 38m
Delta
Sat 8/296:30 am
COS
- STL
1 stop8h 47m
Delta
Deal found 6/29![Delta logo]()
$230
This Delta deal was found by Cheapflights users on 6/28. 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.
Tue 8/183:39 pm
STL
- COS
1 stop6h 59m
Delta
Thu 8/206:00 am
COS
- STL
1 stop7h 33m
Delta
Deal found 6/28![Delta logo]()
$264
This United Airlines deal was found by Cheapflights users on 6/29. 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.
Thu 8/208:46 am
ORD
- COS
Nonstop2h 47m
United Airlines
Mon 8/2411:55 am
COS
- ORD
Nonstop2h 43m
United Airlines
Deal found 6/29![United Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 6/28. 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.
Tue 8/183:35 pm
MDW
- COS
Nonstop2h 25m
Southwest
Wed 8/191:15 pm
COS
- MDW
Nonstop2h 20m
Southwest
Deal found 6/28![Southwest logo]()
$267
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/118:46 am
ORD
- COS
Nonstop2h 47m
United Airlines
Sat 8/1511:55 am
COS
- ORD
Nonstop2h 43m
United Airlines
Deal found 7/1![United Airlines logo]()
$271
This American Airlines deal was found by Cheapflights users on 6/29. 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.
Thu 8/65:00 am
ORD
- COS
1 stop5h 18m
American Airlines
Tue 8/1112:37 pm
COS
- ORD
Nonstop2h 53m
American Airlines
Deal found 6/29![American Airlines logo]()
$277
This American Airlines deal was found by Cheapflights users on 7/1. 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 8/1110:56 am
ORD
- COS
Nonstop2h 51m
American Airlines
Sat 8/155:13 pm
COS
- ORD
1 stop6h 05m
American Airlines
Deal found 7/1![American Airlines logo]()
$281
This Southwest deal was found by Cheapflights users on 7/2. 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.
Wed 8/123:35 pm
MDW
- COS
Nonstop2h 25m
Southwest
Sat 8/1512:15 pm
COS
- MDW
1 stop5h 55m
Southwest
Deal found 7/2![Southwest logo]()
$281
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Wed 10/2110:50 am
ORD
- COS
Nonstop3h 06m
American Airlines
Mon 10/2612:46 pm
COS
- ORD
Nonstop2h 45m
American Airlines
Deal found 6/30![American Airlines logo]()
$283
This Southwest deal was found by Cheapflights users on 7/1. 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.
Wed 8/1211:35 am
STL
- COS
1 stop8h 30m
Southwest
Tue 8/181:15 pm
COS
- STL
2 stops8h 20m
Southwest
Deal found 7/1![Southwest logo]()
$284
This Southwest deal was found by Cheapflights users on 6/30. 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.
Tue 8/114:40 pm
MDW
- COS
2 stops6h 05m
Southwest
Wed 8/191:15 pm
COS
- MDW
Nonstop2h 20m
Southwest
Deal found 6/30![Southwest logo]()
$286
Best flights from Illinois to Colorado SpringsDiscover carefully curated flight deals from Illinois to Colorado Springs that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2026.
Discover carefully curated flight deals from Illinois to Colorado Springs that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2026.
This Delta deal was found by Cheapflights users on 6/29. 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 8/155:00 pm
STL
- COS
1 stop6h 28m
Delta
Sat 8/226:30 am
COS
- STL
1 stop7h 03m
Delta
Deal found 6/29![Delta logo]()
$225
This Southwest deal was found by Cheapflights users on 7/2. 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.
Wed 8/123:35 pm
MDW
- COS
Nonstop2h 25m
Southwest
Sat 8/1512:15 pm
COS
- MDW
1 stop5h 55m
Southwest
Deal found 7/2![Southwest logo]()
$281
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Thu 8/138:46 am
ORD
- COS
Nonstop2h 47m
United Airlines
Thu 8/2011:55 am
COS
- ORD
Nonstop2h 43m
United Airlines
Deal found 6/28![United Airlines logo]()
$302
This American Airlines deal was found by Cheapflights users on 6/30. 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 8/296:00 am
EVV
- COS
1 stop7h 47m
American Airlines
Wed 9/23:51 pm
COS
- EVV
1 stop6h 36m
American Airlines
Deal found 6/30![American Airlines logo]()
$403
This Delta deal was found by Cheapflights users on 6/30. 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 8/226:20 am
STL
- COS
1 stop5h 27m
Delta
Mon 8/246:16 pm
COS
- STL
1 stop5h 25m
Delta
Deal found 6/30![Delta logo]()
$279
This Southwest deal was found by Cheapflights users on 6/30. 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.
Tue 8/1110:30 am
MDW
- COS
2 stops9h 35m
Southwest
Wed 8/196:15 am
COS
- MDW
1 stop4h 45m
Southwest
Deal found 6/30![Southwest logo]()
$292
This Delta deal was found by Cheapflights users on 6/28. 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 10/211:00 pm
MDW
- COS
1 stop8h 07m
Delta
Mon 10/261:29 pm
COS
- MDW
1 stop7h 56m
Delta
Deal found 6/28![Delta logo]()
$287
This United Airlines deal was found by Cheapflights users on 7/2. 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 10/69:03 am
ORD
- COS
Nonstop2h 52m
United Airlines
Wed 10/712:01 pm
COS
- ORD
Nonstop2h 45m
United Airlines
Deal found 7/2![United Airlines logo]()
$351
This Delta deal was found by Cheapflights users on 6/28. 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 10/261:26 pm
ORD
- COS
1 stop7h 41m
Delta
Wed 10/286:10 pm
COS
- ORD
2 stops13h 28m
Delta
Deal found 6/28![Delta logo]()
$292
This Southwest deal was found by Cheapflights users on 7/1. 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.
Thu 10/13:20 pm
STL
- COS
1 stop7h 05m
Southwest
Tue 10/611:45 am
COS
- STL
2 stops7h 10m
Southwest
Deal found 7/1![Southwest logo]()
$338
This Delta deal was found by Cheapflights users on 6/28. 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 10/311:17 am
ORD
- COS
2 stops9h 39m
Delta
Sat 10/101:30 pm
COS
- ORD
1 stop6h 30m
Delta
Deal found 6/28![Delta logo]()
$292
This United Airlines deal was found by Cheapflights users on 6/29. 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.
Mon 7/275:00 am
ORD
- COS
1 stop4h 41m
United Airlines
Mon 8/312:11 pm
COS
- ORD
Nonstop2h 45m
United Airlines
Deal found 6/29![United Airlines logo]()
$371
This Southwest deal was found by Cheapflights users on 6/28. 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.
Thu 10/1510:25 am
MDW
- COS
Nonstop2h 35m
Southwest
Sun 10/1810:45 am
COS
- MDW
Nonstop2h 20m
Southwest
Deal found 6/28![Southwest logo]()
$343
This American Airlines deal was found by Cheapflights users on 6/29. 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 7/149:50 am
PIA
- COS
2 stops13h 33m
American Airlines
Sat 7/1810:44 am
COS
- PIA
2 stops12h 31m
American Airlines
Deal found 6/29![American Airlines logo]()
$416
This Delta deal was found by Cheapflights users on 7/2. 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.
Tue 8/119:24 am
MDW
- COS
2 stops13h 14m
Delta
Sat 8/1511:27 am
COS
- MDW
1 stop5h 34m
Delta
Deal found 7/2![Delta logo]()
$296
This United Airlines deal was found by Cheapflights users on 6/30. 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 7/219:06 am
STL
- COS
1 stop4h 17m
United Airlines
Tue 7/281:30 pm
COS
- STL
2 stops8h 59m
United Airlines
Deal found 6/30![United Airlines logo]()
$380
This Southwest deal was found by Cheapflights users on 7/2. 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.
Mon 8/32:15 pm
STL
- COS
1 stop7h 00m
Southwest
Mon 8/313:00 pm
COS
- STL
1 stop4h 10m
Southwest
Deal found 7/2![Southwest logo]()
$360
This American Airlines deal was found by Cheapflights users on 6/30. 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 8/212:51 pm
SPI
- COS
2 stops9h 02m
American Airlines
Sun 8/235:40 am
COS
- SPI
2 stops7h 26m
American Airlines
Deal found 6/30![American Airlines logo]()
$437
This Delta deal was found by Cheapflights users on 7/2. 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 10/211:26 pm
ORD
- COS
1 stop7h 41m
Delta
Mon 10/266:10 pm
COS
- ORD
2 stops14h 14m
Delta
Deal found 7/2![Delta logo]()
$308
This United Airlines deal was found by Cheapflights users on 6/30. 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 10/246:15 am
PIA
- COS
1 stop5h 40m
United Airlines
Wed 10/281:15 pm
COS
- PIA
1 stop6h 32m
United Airlines
Deal found 6/30![United Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 6/29. 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.
Sat 8/152:05 pm
STL
- COS
2 stops7h 30m
Southwest
Sat 8/228:55 am
COS
- STL
2 stops6h 45m
Southwest
Deal found 6/29![Southwest logo]()
$366
This Delta deal was found by Cheapflights users on 6/29. 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.
Tue 8/2512:52 pm
STL
- COS
2 stops10h 36m
Delta
Sun 8/306:00 am
COS
- STL
1 stop7h 33m
Delta
Deal found 6/29![Delta logo]()
$321
This United Airlines deal was found by Cheapflights users on 6/30. 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 7/283:47 pm
MLI
- COS
1 stop7h 08m
United Airlines
Tue 8/41:30 pm
COS
- MLI
1 stop6h 24m
United Airlines
Deal found 6/30![United Airlines logo]()
$389
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Thu 9/34:32 pm
MLI
- COS
1 stop7h 21m
American Airlines
Wed 9/94:08 pm
COS
- MLI
1 stop6h 10m
American Airlines
Deal found 6/28![American Airlines logo]()
$494
This Southwest deal was found by Cheapflights users on 7/2. 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.
Thu 9/243:45 pm
STL
- COS
1 stop5h 10m
Southwest
Sun 9/276:05 am
COS
- STL
1 stop5h 55m
Southwest
Deal found 7/2![Southwest logo]()
$380
This Delta deal was found by Cheapflights users on 7/1. 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.
Tue 8/116:05 am
MDW
- COS
1 stop7h 10m
Delta
Wed 8/191:20 pm
COS
- MDW
1 stop8h 16m
Delta
Deal found 7/1![Delta logo]()
$325
This United Airlines deal was found by Cheapflights users on 7/2. 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 7/315:43 pm
PIA
- COS
1 stop5h 12m
United Airlines
Wed 8/51:30 pm
COS
- PIA
1 stop6h 31m
United Airlines
Deal found 7/2![United Airlines logo]()
$409
This Southwest deal was found by Cheapflights users on 7/1. 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 7/317:45 pm
STL
- COS
1 stop6h 35m
Southwest
Fri 8/74:20 pm
COS
- STL
1 stop5h 50m
Southwest
Deal found 7/1![Southwest logo]()
$387
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Thu 9/34:43 pm
PIA
- COS
1 stop7h 10m
American Airlines
Tue 9/83:51 pm
COS
- PIA
1 stop6h 28m
American Airlines
Deal found 6/28![American Airlines logo]()
$522
This Delta deal was found by Cheapflights users on 7/3. 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.
Tue 7/211:22 pm
STL
- COS
1 stop8h 45m
Delta
Tue 7/286:16 pm
COS
- STL
1 stop5h 25m
Delta
Deal found 7/3![Delta logo]()
$336
Last-minute flights from Illinois to Colorado SpringsDiscover last-minute flight deals from Illinois to Colorado Springs. Data last updated July 3, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Colorado Springs. Data last updated July 3, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/29. 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.
Thu 8/65:00 am
ORD
- COS
1 stop5h 18m
American Airlines
Tue 8/1112:37 pm
COS
- ORD
Nonstop2h 53m
American Airlines
Deal found 6/29![American Airlines logo]()
$277
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/118:46 am
ORD
- COS
Nonstop2h 47m
United Airlines
Sat 8/1511:55 am
COS
- ORD
Nonstop2h 43m
United Airlines
Deal found 7/1![United Airlines logo]()
$271
This American Airlines deal was found by Cheapflights users on 7/1. 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 8/1110:45 am
ORD
- COS
1 stop5h 09m
American Airlines
Wed 8/1912:37 pm
COS
- ORD
Nonstop2h 53m
American Airlines
Deal found 7/1![American Airlines logo]()
$281
This Southwest deal was found by Cheapflights users on 6/30. 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.
Tue 8/114:40 pm
MDW
- COS
2 stops6h 05m
Southwest
Wed 8/191:15 pm
COS
- MDW
Nonstop2h 20m
Southwest
Deal found 6/30![Southwest logo]()
$286
This Southwest deal was found by Cheapflights users on 7/2. 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.
Wed 8/123:35 pm
MDW
- COS
Nonstop2h 25m
Southwest
Sat 8/1512:15 pm
COS
- MDW
1 stop5h 55m
Southwest
Deal found 7/2![Southwest logo]()
$281
This Southwest deal was found by Cheapflights users on 7/1. 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.
Wed 8/1211:35 am
STL
- COS
1 stop8h 30m
Southwest
Tue 8/181:15 pm
COS
- STL
2 stops8h 20m
Southwest
Deal found 7/1![Southwest logo]()
$284
This Delta deal was found by Cheapflights users on 6/29. 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 8/155:00 pm
STL
- COS
1 stop6h 28m
Delta
Sat 8/226:30 am
COS
- STL
1 stop7h 03m
Delta
Deal found 6/29![Delta logo]()
$225
This Delta deal was found by Cheapflights users on 6/28. 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.
Tue 8/183:39 pm
STL
- COS
1 stop6h 59m
Delta
Thu 8/206:00 am
COS
- STL
1 stop7h 33m
Delta
Deal found 6/28![Delta logo]()
$264
This Southwest deal was found by Cheapflights users on 6/28. 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.
Tue 8/183:35 pm
MDW
- COS
Nonstop2h 25m
Southwest
Wed 8/191:15 pm
COS
- MDW
Nonstop2h 20m
Southwest
Deal found 6/28![Southwest logo]()
$267
This United Airlines deal was found by Cheapflights users on 7/2. 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 8/188:46 am
ORD
- COS
Nonstop2h 47m
United Airlines
Mon 8/2411:55 am
COS
- ORD
Nonstop2h 43m
United Airlines
Deal found 7/2![United Airlines logo]()
$283
This United Airlines deal was found by Cheapflights users on 6/29. 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.
Thu 8/208:46 am
ORD
- COS
Nonstop2h 47m
United Airlines
Mon 8/2411:55 am
COS
- ORD
Nonstop2h 43m
United Airlines
Deal found 6/29![United Airlines logo]()
$267
This Delta deal was found by Cheapflights users on 6/29. 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.
Tue 8/253:50 pm
STL
- COS
2 stops7h 38m
Delta
Sat 8/296:30 am
COS
- STL
1 stop8h 47m
Delta
Deal found 6/29![Delta logo]()
$230
One-way flights from Illinois to Colorado SpringsSearch for one-way flight options from Illinois to Colorado Springs. Find affordable one-way fares based on user searches. Data last updated July 3, 2026.
Search for one-way flight options from Illinois to Colorado Springs. Find affordable one-way fares based on user searches. Data last updated July 3, 2026.
This United Airlines deal was found by Cheapflights users on 6/30. 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 7/225:10 am
STL
- COS
1 stop4h 31m
United Airlines
Deal found 6/30![United Airlines logo]()
$113
This United Airlines deal was found by Cheapflights users on 6/29. 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.
Thu 8/208:46 am
ORD
- COS
Nonstop2h 47m
United Airlines
Deal found 6/29![United Airlines logo]()
$134
This Southwest deal was found by Cheapflights users on 6/28. 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.
Wed 8/263:35 pm
MDW
- COS
Nonstop2h 25m
Southwest
Deal found 6/28![Southwest logo]()
$134
This United Airlines deal was found by Cheapflights users on 7/2. 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 8/227:45 pm
ORD
- COS
Nonstop3h 09m
United Airlines
Deal found 7/2![United Airlines logo]()
$136
This Southwest deal was found by Cheapflights users on 7/3. 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.
Tue 9/13:35 pm
MDW
- COS
Nonstop2h 25m
Southwest
Deal found 7/3![Southwest logo]()
$136
This Delta deal was found by Cheapflights users on 6/29. 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 9/262:05 pm
ORD
- COS
1 stop9h 19m
Delta
Deal found 6/29![Delta logo]()
$144
This Delta deal was found by Cheapflights users on 6/29. 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.
Tue 8/256:05 am
MDW
- COS
1 stop7h 10m
Delta
Deal found 6/29![Delta logo]()
$144
This Delta deal was found by Cheapflights users on 6/30. 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 8/296:00 am
ORD
- COS
1 stop5h 47m
Delta
Deal found 6/30![Delta logo]()
$146
This Southwest deal was found by Cheapflights users on 7/1. 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.
Sat 8/296:45 am
MDW
- COS
1 stop7h 35m
Southwest
Deal found 7/1![Southwest logo]()
$146
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Thu 10/2210:50 am
ORD
- COS
Nonstop3h 06m
American Airlines
Deal found 6/30![American Airlines logo]()
$148
This Delta deal was found by Cheapflights users on 6/29. 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.
Tue 9/298:25 am
ORD
- COS
2 stops10h 09m
Delta
Deal found 6/29![Delta logo]()
$149
This Delta deal was found by Cheapflights users on 6/30. 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.
Tue 9/292:00 pm
MDW
- COS
2 stops9h 24m
Delta
Deal found 6/30![Delta logo]()
$151
Find 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 July 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $225 (Delta) |
One-way from | $113 (United Airlines) |
Popular in | December |
Cheapest in | April |
Average price | $418 |
Good round-trip deal | $390 or less |
Good one-way deal | $183 or less |
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 July 3, 2026.
Use the filters below to find and compare flights from Illinois to Colorado Springs that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisColorado Springs
STL - COS
STLCOS
Lambert-St Louis
Sat 8/15
5:00 pm-10:28 pm
1 stop6h 28m
Colorado Springs
Sat 8/22
6:30 am-2:33 pm
1 stop7h 03m
$225
St. LouisColorado Springs
STL - COS
STLCOS
Lambert-St Louis
Sat 8/22
6:20 am-10:47 am
1 stop5h 27m
Colorado Springs
Mon 8/24
6:16 pm-12:41 am
1 stop5h 25m
$279
ChicagoColorado Springs
MDW - COS
MDWCOS
Chicago Midway
Wed 8/12
3:35 pm-5:00 pm
Nonstop2h 25m
Colorado Springs
Sat 8/15
12:15 pm-7:10 pm
1 stop5h 55m
$281
ChicagoColorado Springs
MDW - COS
MDWCOS
Chicago Midway
Wed 10/21
1:00 pm-8:07 pm
1 stop8h 07m
Colorado Springs
Mon 10/26
1:29 pm-10:25 pm
1 stop7h 56m
$287
ChicagoColorado Springs
MDW - COS
MDWCOS
Chicago Midway
Tue 8/11
10:30 am-7:05 pm
2 stops9h 35m
Colorado Springs
Wed 8/19
6:15 am-12:00 pm
1 stop4h 45m
$292
ChicagoColorado Springs
ORD - COS
ORDCOS
Chicago O'Hare Intl
Mon 10/26
1:26 pm-8:07 pm
1 stop7h 41m
Colorado Springs
Wed 10/28
6:10 pm-8:38 am
2 stops13h 28m
$292
ChicagoColorado Springs
ORD - COS
ORDCOS
Chicago O'Hare Intl
Sat 10/3
11:17 am-7:56 pm
2 stops9h 39m
Colorado Springs
Sat 10/10
1:30 pm-9:00 pm
1 stop6h 30m
$292
ChicagoColorado Springs
MDW - COS
MDWCOS
Chicago Midway
Tue 8/11
9:24 am-9:38 pm
2 stops13h 14m
Colorado Springs
Sat 8/15
11:27 am-6:01 pm
1 stop5h 34m
$296
ChicagoColorado Springs
ORD - COS
ORDCOS
Chicago O'Hare Intl
Thu 8/13
8:46 am-10:33 am
Nonstop2h 47m
Colorado Springs
Thu 8/20
11:55 am-3:38 pm
Nonstop2h 43m
$302
ChicagoColorado Springs
ORD - COS
ORDCOS
Chicago O'Hare Intl
Wed 10/21
1:26 pm-8:07 pm
1 stop7h 41m
Colorado Springs
Mon 10/26
6:10 pm-9:24 am
2 stops14h 14m
$308
Showing 1-10 of 60 resultsSorted by cheapest first
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.
STL-COS
ORD-COS
MDW-COS
EVV-COS
PIA-COS
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
USIL-COS
STL-COS
ORD-COS
MDW-COS
EVV-COS
What is the cheapest month to book a flight from Illinois to Colorado Springs?
Currently, December is the cheapest month in which you can book a flight from Illinois to Colorado Springs (average of $105). Flying from Illinois to Colorado Springs in April is currently the most expensive (average of $229). 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 July 3, 2026.
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 28% on your trip compared to booking a flight at noon.
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 July 3, 2026.
The most flights from USIL to COS are scheduled on a Monday (5 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from Illinois to Colorado Springs?
How far ahead should I book a flight from Illinois to Colorado Springs?
To ensure you get the cheapest price possible for a flight from Illinois to Colorado Springs, you should look to book at least 47 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Colorado Springs flight routes
Complete your trip
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Alternative routes for Illinois to Colorado Springs
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Colorado Springs
Explore flights to Colorado Springs departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 3, 2026.
Complete your trip
Complete your trip to Colorado Springs by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Colorado Springs by cabin class
Find flights from Illinois to Colorado Springs, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Colorado Springs flights
Browse other Illinois and Colorado Springs flight options. Last updated on July 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Colorado Springs flights
Consider these flights traveling from Illinois to Colorado Springs.
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 July 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$191 | Average$410 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$239 | Average$453 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$246 | Average$408 | FlexibilityNo cancel fee | On-time69% |