$116+ 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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — COS
Jun 4 — Jun 111
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Colorado Springs with Cheapflights
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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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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 May 5, 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 May 5, 2026.
This United Airlines deal was found by Cheapflights users on 5/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/35:10 am
STL
- COS
1 stop4h 31m
United Airlines
Tue 6/99:00 am
COS
- STL
1 stop5h 46m
United Airlines
Deal found 5/3![United Airlines logo]()
$221
This Delta deal was found by Cheapflights users on 5/4. 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 8/116:00 am
STL
- COS
2 stops12h 36m
Delta
Tue 8/186:16 pm
COS
- STL
1 stop5h 25m
Delta
Deal found 5/4![Delta logo]()
$226
This United Airlines deal was found by Cheapflights users on 5/1. 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 6/29:06 am
ORD
- COS
Nonstop3h 04m
United Airlines
Tue 6/99:00 am
COS
- ORD
Nonstop3h 03m
United Airlines
Deal found 5/1![United Airlines logo]()
$271
This Delta deal was found by Cheapflights users on 4/30. 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 5/304:00 pm
STL
- COS
1 stop6h 27m
Delta
Wed 6/311:55 am
COS
- STL
1 stop6h 08m
Delta
Deal found 4/30![Delta logo]()
$275
This Delta deal was found by Cheapflights users on 4/30. 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 8/183:42 pm
STL
- COS
1 stop6h 33m
Delta
Thu 8/206:00 am
COS
- STL
1 stop5h 53m
Delta
Deal found 4/30![Delta logo]()
$277
This American Airlines deal was found by Cheapflights users on 5/4. 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 6/35:25 am
STL
- COS
1 stop5h 29m
American Airlines
Tue 6/93:53 pm
COS
- STL
1 stop4h 44m
American Airlines
Deal found 5/4![American Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 4/30. 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 6/65:00 pm
STL
- COS
1 stop6h 22m
Delta
Tue 6/911:10 am
COS
- STL
2 stops11h 46m
Delta
Deal found 4/30![Delta logo]()
$280
This American Airlines deal was found by Cheapflights users on 4/30. 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 6/1710:00 am
ORD
- COS
Nonstop2h 56m
American Airlines
Wed 6/2410:46 am
COS
- ORD
1 stop8h 25m
American Airlines
Deal found 4/30![American Airlines logo]()
$281
This Delta deal was found by Cheapflights users on 5/3. 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.
Wed 7/14:19 pm
BMI
- COS
1 stop5h 48m
Delta
Wed 7/86:00 am
COS
- BMI
1 stop8h 34m
Delta
Deal found 5/3![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 5/3. 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 6/22:15 pm
MDW
- COS
1 stop9h 05m
Southwest
Tue 6/96:10 pm
COS
- MDW
1 stop4h 55m
Southwest
Deal found 5/3![Southwest logo]()
$291
This Delta deal was found by Cheapflights users on 4/30. 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 6/231:39 pm
STL
- COS
1 stop8h 28m
Delta
Wed 7/16:20 pm
COS
- STL
1 stop5h 23m
Delta
Deal found 4/30![Delta logo]()
$294
This Delta deal was found by Cheapflights users on 5/1. 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 6/22:00 pm
ORD
- COS
2 stops9h 22m
Delta
Tue 6/96:00 am
COS
- ORD
1 stop7h 16m
Delta
Deal found 5/1![Delta logo]()
$296
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 May 5, 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 May 5, 2026.
This Delta deal was found by Cheapflights users on 5/4. 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 8/116:00 am
STL
- COS
2 stops12h 36m
Delta
Tue 8/186:16 pm
COS
- STL
1 stop5h 25m
Delta
Deal found 5/4![Delta logo]()
$226
This United Airlines deal was found by Cheapflights users on 4/30. 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 8/184:40 pm
STL
- COS
1 stop6h 24m
United Airlines
Wed 8/1912:45 pm
COS
- STL
1 stop7h 37m
United Airlines
Deal found 4/30![United Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 4/30. 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.
Fri 5/296:20 am
STL
- COS
1 stop4h 00m
Southwest
Tue 6/210:25 am
COS
- STL
2 stops8h 35m
Southwest
Deal found 4/30![Southwest logo]()
$328
This American Airlines deal was found by Cheapflights users on 5/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/14:22 pm
BMI
- COS
1 stop7h 02m
American Airlines
Wed 7/153:45 pm
COS
- BMI
1 stop6h 23m
American Airlines
Deal found 5/3![American Airlines logo]()
$346
This Delta deal was found by Cheapflights users on 5/4. 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.
Thu 9/36:30 am
STL
- COS
1 stop4h 32m
Delta
Tue 9/85:55 pm
COS
- STL
1 stop5h 41m
Delta
Deal found 5/4![Delta logo]()
$277
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 8/59:06 am
ORD
- COS
Nonstop3h 04m
United Airlines
Tue 8/1112:45 pm
COS
- ORD
Nonstop2h 44m
United Airlines
Deal found 4/29![United Airlines logo]()
$311
This Delta deal was found by Cheapflights users on 5/3. 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.
Wed 7/14:19 pm
BMI
- COS
1 stop5h 48m
Delta
Wed 7/86:00 am
COS
- BMI
1 stop8h 34m
Delta
Deal found 5/3![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 4/30. 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 6/2312:00 pm
MDW
- COS
1 stop8h 15m
Southwest
Fri 6/2612:20 pm
COS
- MDW
1 stop10h 05m
Southwest
Deal found 4/30![Southwest logo]()
$331
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Fri 5/295:33 pm
PIA
- COS
2 stops7h 26m
United Airlines
Tue 6/212:16 pm
COS
- PIA
1 stop6h 10m
United Airlines
Deal found 4/30![United Airlines logo]()
$314
This Delta deal was found by Cheapflights users on 5/4. 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 10/194:00 pm
BMI
- COS
1 stop6h 21m
Delta
Sat 10/246:00 am
COS
- BMI
1 stop8h 16m
Delta
Deal found 5/4![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 5/3. 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.
Fri 6/124:55 pm
MDW
- COS
1 stop9h 20m
Southwest
Tue 6/166:10 pm
COS
- MDW
1 stop4h 55m
Southwest
Deal found 5/3![Southwest logo]()
$331
This American Airlines deal was found by Cheapflights users on 5/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/235:30 pm
EVV
- COS
1 stop5h 55m
American Airlines
Sat 6/65:35 am
COS
- EVV
1 stop5h 07m
American Airlines
Deal found 5/2![American Airlines logo]()
$381
This Delta deal was found by Cheapflights users on 4/29. 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.
Fri 9/183:42 pm
STL
- COS
1 stop6h 33m
Delta
Tue 9/221:40 pm
COS
- STL
1 stop6h 10m
Delta
Deal found 4/29![Delta logo]()
$294
This Southwest deal was found by Cheapflights users on 5/4. 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 6/196:40 pm
MDW
- COS
1 stop7h 40m
Southwest
Wed 6/246:10 pm
COS
- MDW
1 stop4h 55m
Southwest
Deal found 5/4![Southwest logo]()
$331
This United Airlines deal was found by Cheapflights users on 5/4. 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 6/195:00 am
ORD
- COS
1 stop4h 41m
United Airlines
Wed 6/2412:13 pm
COS
- ORD
Nonstop2h 46m
United Airlines
Deal found 5/4![United Airlines logo]()
$340
This American Airlines deal was found by Cheapflights users on 5/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:25 am
MLI
- COS
1 stop6h 24m
American Airlines
Sun 5/175:40 am
COS
- MLI
1 stop4h 54m
American Airlines
Deal found 5/3![American Airlines logo]()
$384
This Southwest deal was found by Cheapflights users on 4/29. 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.
Sun 8/96:10 am
STL
- COS
1 stop5h 15m
Southwest
Sat 8/157:30 am
COS
- STL
1 stop6h 55m
Southwest
Deal found 4/29![Southwest logo]()
$333
This United Airlines deal was found by Cheapflights users on 5/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/69:06 am
ORD
- COS
Nonstop3h 03m
United Airlines
Mon 8/1012:11 pm
COS
- ORD
Nonstop2h 45m
United Airlines
Deal found 5/3![United Airlines logo]()
$351
This American Airlines deal was found by Cheapflights users on 5/4. 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 5/193:45 pm
BMI
- COS
1 stop7h 40m
American Airlines
Sat 5/233:45 pm
COS
- BMI
1 stop6h 23m
American Airlines
Deal found 5/4![American Airlines logo]()
$398
This Delta deal was found by Cheapflights users on 5/3. 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 6/22:00 pm
ORD
- COS
2 stops9h 22m
Delta
Tue 6/96:00 am
COS
- ORD
1 stop7h 16m
Delta
Deal found 5/3![Delta logo]()
$330
This Southwest deal was found by Cheapflights users on 5/4. 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 7/33:20 pm
STL
- COS
2 stops10h 55m
Southwest
Tue 7/75:10 pm
COS
- STL
1 stop4h 00m
Southwest
Deal found 5/4![Southwest logo]()
$338
This United Airlines deal was found by Cheapflights users on 4/30. 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 6/205:00 am
ORD
- COS
1 stop4h 41m
United Airlines
Sun 6/285:44 am
COS
- ORD
Nonstop3h 01m
United Airlines
Deal found 4/30![United Airlines logo]()
$361
This Southwest deal was found by Cheapflights users on 4/29. 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.
Thu 9/108:30 am
STL
- COS
2 stops8h 10m
Southwest
Mon 9/144:20 pm
COS
- STL
1 stop5h 50m
Southwest
Deal found 4/29![Southwest logo]()
$355
This American Airlines deal was found by Cheapflights users on 5/4. 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 5/194:03 pm
EVV
- COS
1 stop7h 22m
American Airlines
Sat 5/235:15 pm
COS
- EVV
1 stop5h 16m
American Airlines
Deal found 5/4![American Airlines logo]()
$431
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/164:15 pm
ORD
- COS
Nonstop3h 04m
United Airlines
Sat 5/2311:31 am
COS
- ORD
1 stop6h 20m
United Airlines
Deal found 4/30![United Airlines logo]()
$372
This Delta deal was found by Cheapflights users on 5/4. 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 10/211:15 pm
ORD
- COS
1 stop9h 06m
Delta
Mon 10/266:00 am
COS
- ORD
2 stops11h 40m
Delta
Deal found 5/4![Delta logo]()
$376
This Southwest deal was found by Cheapflights users on 5/2. 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.
Sat 8/155:40 am
MDW
- COS
1 stop6h 20m
Southwest
Fri 8/211:30 pm
COS
- MDW
1 stop5h 50m
Southwest
Deal found 5/2![Southwest logo]()
$371
This Delta deal was found by Cheapflights users on 5/2. 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.
Thu 7/161:44 pm
ORD
- COS
1 stop8h 23m
Delta
Mon 7/206:16 pm
COS
- ORD
2 stops12h 43m
Delta
Deal found 5/2![Delta logo]()
$376
This United Airlines deal was found by Cheapflights users on 4/30. 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 7/216:30 am
MLI
- COS
1 stop5h 39m
United Airlines
Wed 7/291:30 pm
COS
- MLI
2 stops8h 31m
United Airlines
Deal found 4/30![United Airlines logo]()
$383
This American Airlines deal was found by Cheapflights users on 5/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1412:12 pm
PIA
- COS
1 stop5h 11m
American Airlines
Sun 5/175:40 am
COS
- PIA
1 stop5h 02m
American Airlines
Deal found 5/2![American Airlines logo]()
$492
Last-minute flights from Illinois to Colorado SpringsDiscover last-minute flight deals from Illinois to Colorado Springs. Data last updated May 5, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Colorado Springs. Data last updated May 5, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/30. 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 5/304:00 pm
STL
- COS
1 stop6h 27m
Delta
Wed 6/311:55 am
COS
- STL
1 stop6h 08m
Delta
Deal found 4/30![Delta logo]()
$275
This United Airlines deal was found by Cheapflights users on 5/1. 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 6/29:06 am
ORD
- COS
Nonstop3h 04m
United Airlines
Tue 6/99:00 am
COS
- ORD
Nonstop3h 03m
United Airlines
Deal found 5/1![United Airlines logo]()
$271
This Southwest deal was found by Cheapflights users on 5/3. 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 6/22:15 pm
MDW
- COS
1 stop9h 05m
Southwest
Tue 6/96:10 pm
COS
- MDW
1 stop4h 55m
Southwest
Deal found 5/3![Southwest logo]()
$291
This Delta deal was found by Cheapflights users on 5/1. 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 6/22:00 pm
ORD
- COS
2 stops9h 22m
Delta
Tue 6/96:00 am
COS
- ORD
1 stop7h 16m
Delta
Deal found 5/1![Delta logo]()
$296
This Delta deal was found by Cheapflights users on 5/3. 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 6/23:11 pm
STL
- COS
2 stops8h 11m
Delta
Tue 6/96:00 am
COS
- STL
1 stop7h 52m
Delta
Deal found 5/3![Delta logo]()
$299
This United Airlines deal was found by Cheapflights users on 5/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/35:10 am
STL
- COS
1 stop4h 31m
United Airlines
Tue 6/99:00 am
COS
- STL
1 stop5h 46m
United Airlines
Deal found 5/3![United Airlines logo]()
$221
This American Airlines deal was found by Cheapflights users on 5/4. 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 6/35:25 am
STL
- COS
1 stop5h 29m
American Airlines
Tue 6/93:53 pm
COS
- STL
1 stop4h 44m
American Airlines
Deal found 5/4![American Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 4/30. 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 6/65:00 pm
STL
- COS
1 stop6h 22m
Delta
Tue 6/911:10 am
COS
- STL
2 stops11h 46m
Delta
Deal found 4/30![Delta logo]()
$280
This American Airlines deal was found by Cheapflights users on 4/30. 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 6/1710:00 am
ORD
- COS
Nonstop2h 56m
American Airlines
Wed 6/2410:46 am
COS
- ORD
1 stop8h 25m
American Airlines
Deal found 4/30![American Airlines logo]()
$281
This Delta deal was found by Cheapflights users on 4/30. 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 6/231:39 pm
STL
- COS
1 stop8h 28m
Delta
Wed 7/16:20 pm
COS
- STL
1 stop5h 23m
Delta
Deal found 4/30![Delta logo]()
$294
This United Airlines deal was found by Cheapflights users on 5/1. 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.
Wed 6/245:10 am
STL
- COS
1 stop4h 31m
United Airlines
Mon 6/295:07 pm
COS
- STL
1 stop5h 50m
United Airlines
Deal found 5/1![United Airlines logo]()
$296
This Delta deal was found by Cheapflights users on 4/30. 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.
Mon 6/296:00 am
STL
- COS
1 stop7h 35m
Delta
Wed 7/16:20 pm
COS
- STL
1 stop5h 23m
Delta
Deal found 4/30![Delta logo]()
$277
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 May 5, 2026.
Search for one-way flight options from Illinois to Colorado Springs. Find affordable one-way fares based on user searches. Data last updated May 5, 2026.
This Southwest deal was found by Cheapflights users on 5/4. 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 6/304:00 pm
STL
- COS
2 stops7h 55m
Southwest
Deal found 5/4![Southwest logo]()
$116
This United Airlines deal was found by Cheapflights users on 5/4. 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 6/306:00 am
STL
- COS
1 stop6h 09m
United Airlines
Deal found 5/4![United Airlines logo]()
$124
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/279:06 am
ORD
- COS
Nonstop3h 04m
United Airlines
Deal found 4/30![United Airlines logo]()
$136
This Southwest deal was found by Cheapflights users on 5/3. 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.
Wed 8/193:35 pm
MDW
- COS
Nonstop2h 25m
Southwest
Deal found 5/3![Southwest logo]()
$136
This American Airlines deal was found by Cheapflights users on 4/30. 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 5/273:50 pm
ORD
- COS
1 stop7h 35m
American Airlines
Deal found 4/30![American Airlines logo]()
$146
This Southwest deal was found by Cheapflights users on 5/4. 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 7/112:00 pm
MDW
- COS
1 stop8h 15m
Southwest
Deal found 5/4![Southwest logo]()
$146
This Delta deal was found by Cheapflights users on 4/30. 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.
Wed 5/272:00 pm
ORD
- COS
2 stops9h 22m
Delta
Deal found 4/30![Delta logo]()
$151
This United Airlines deal was found by Cheapflights users on 5/2. 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 6/235:10 am
STL
- COS
1 stop4h 31m
United Airlines
Deal found 5/2![United Airlines logo]()
$151
This Delta deal was found by Cheapflights users on 5/4. 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 5/271:22 pm
MDW
- COS
2 stops10h 00m
Delta
Deal found 5/4![Delta logo]()
$151
This Southwest deal was found by Cheapflights users on 5/4. 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 7/294:30 pm
MDW
- COS
1 stop6h 15m
Southwest
Deal found 5/4![Southwest logo]()
$154
This American Airlines deal was found by Cheapflights users on 4/30. 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 6/62:59 pm
ORD
- COS
1 stop8h 25m
American Airlines
Deal found 4/30![American Airlines logo]()
$156
This Southwest deal was found by Cheapflights users on 5/1. 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 5/276:10 am
MDW
- COS
1 stop6h 55m
Southwest
Deal found 5/1![Southwest logo]()
$156
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 May 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $221 (American Airlines) |
One-way from | $116 (Southwest) |
Popular in | February |
Cheapest in | November |
Average price | $377 |
Good round-trip deal | $371 or less |
Good one-way deal | $188 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 May 5, 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
Tue 8/11
6:00 am-5:36 pm
2 stops12h 36m
Colorado Springs
Tue 8/18
6:16 pm-12:41 am
1 stop5h 25m
$226
St. LouisColorado Springs
STL - COS
STLCOS
Lambert-St Louis
Thu 9/3
6:30 am-10:02 am
1 stop4h 32m
Colorado Springs
Tue 9/8
5:55 pm-12:36 am
1 stop5h 41m
$277
BloomingtonColorado Springs
BMI - COS
BMICOS
Bloomington-Normal
Wed 7/1
4:19 pm-9:07 pm
1 stop5h 48m
Colorado Springs
Wed 7/8
6:00 am-3:34 pm
1 stop8h 34m
$289
BloomingtonColorado Springs
BMI - COS
BMICOS
Bloomington-Normal
Mon 10/19
4:00 pm-9:21 pm
1 stop6h 21m
Colorado Springs
Sat 10/24
6:00 am-3:16 pm
1 stop8h 16m
$289
St. LouisColorado Springs
STL - COS
STLCOS
Lambert-St Louis
Fri 9/18
3:42 pm-9:15 pm
1 stop6h 33m
Colorado Springs
Tue 9/22
1:40 pm-8:50 pm
1 stop6h 10m
$294
St. LouisColorado Springs
STL - COS
STLCOS
Lambert-St Louis
Tue 8/18
4:40 pm-10:04 pm
1 stop6h 24m
Colorado Springs
Wed 8/19
12:45 pm-9:22 pm
1 stop7h 37m
$301
Quickest round-trip
ChicagoColorado Springs
ORD - COS
ORDCOS
Chicago O'Hare Intl
Wed 8/5
9:06 am-11:10 am
Nonstop3h 04m
Colorado Springs
Tue 8/11
12:45 pm-4:29 pm
Nonstop2h 44m
$311
PeoriaColorado Springs
PIA - COS
PIACOS
Greater Peoria
Fri 5/29
5:33 pm-11:59 pm
2 stops7h 26m
Colorado Springs
Tue 6/2
12:16 pm-7:26 pm
1 stop6h 10m
$314
St. LouisColorado Springs
STL - COS
STLCOS
Lambert-St Louis
Fri 5/29
6:20 am-9:20 am
1 stop4h 00m
Colorado Springs
Tue 6/2
10:25 am-8:00 pm
2 stops8h 35m
$328
ChicagoColorado Springs
ORD - COS
ORDCOS
Chicago O'Hare Intl
Tue 6/2
2:00 pm-10:22 pm
2 stops9h 22m
Colorado Springs
Tue 6/9
6:00 am-2:16 pm
1 stop7h 16m
$330
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
MDW-COS
ORD-COS
BMI-COS
SPI-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
MDW-COS
ORD-COS
BMI-COS
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 75 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.
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 May 5, 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 22% on your trip compared to booking a flight in the evening.
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 May 5, 2026.
The most flights from USIL to COS are scheduled on a Monday (5 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (4 on average).
How much does it cost to fly round-trip from Illinois to Colorado Springs?
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
Flights by cabin class
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Popular flights
Top destinations
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 May 5, 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 May 5, 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 May 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$193 | Average$405 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$246 | Average$410 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$274 | Average$398 | FlexibilityNo cancel fee | On-time63% |