$144+ 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — COS
Jul 5 — Jul 121
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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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 June 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 June 5, 2026.
This Delta deal was found by Cheapflights users on 5/31. 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 8/193:39 pm
STL
- COS
1 stop6h 59m
Delta
Tue 8/256:16 pm
COS
- STL
1 stop5h 25m
Delta
Deal found 5/31![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 5/31. 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 8/186:20 am
STL
- COS
1 stop5h 27m
Delta
Sat 8/2211:27 am
COS
- STL
1 stop4h 25m
Delta
Deal found 5/31![Delta logo]()
$201
This Southwest deal was found by Cheapflights users on 6/1. 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 8/192:45 pm
STL
- COS
2 stops8h 00m
Southwest
Tue 8/256:15 am
COS
- STL
1 stop7h 15m
Southwest
Deal found 6/1![Southwest logo]()
$202
This Delta deal was found by Cheapflights users on 5/31. 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 8/256:20 am
STL
- COS
1 stop5h 27m
Delta
Sat 8/296:16 pm
COS
- STL
2 stops12h 53m
Delta
Deal found 5/31![Delta logo]()
$206
This Delta deal was found by Cheapflights users on 5/31. 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 8/296:20 am
STL
- COS
1 stop5h 27m
Delta
Sat 8/296:16 pm
COS
- STL
2 stops12h 53m
Delta
Deal found 5/31![Delta logo]()
$210
This American Airlines deal was found by Cheapflights users on 5/31. 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 8/275:42 am
STL
- COS
1 stop4h 36m
American Airlines
Mon 8/318:00 am
COS
- STL
1 stop5h 42m
American Airlines
Deal found 5/31![American Airlines logo]()
$231
This Southwest deal was found by Cheapflights users on 6/4. 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 8/1112:50 pm
STL
- COS
1 stop5h 10m
Southwest
Tue 8/186:15 am
COS
- STL
1 stop7h 15m
Southwest
Deal found 6/4![Southwest logo]()
$237
This Delta deal was found by Cheapflights users on 5/31. 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 8/123:39 pm
STL
- COS
1 stop6h 59m
Delta
Mon 8/176:16 pm
COS
- STL
1 stop5h 25m
Delta
Deal found 5/31![Delta logo]()
$238
This Delta deal was found by Cheapflights users on 5/31. 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 8/183:50 pm
STL
- COS
2 stops7h 38m
Delta
Tue 8/2511:27 am
COS
- STL
1 stop4h 25m
Delta
Deal found 5/31![Delta logo]()
$243
This Delta deal was found by Cheapflights users on 6/4. 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 8/186:20 am
STL
- COS
1 stop5h 27m
Delta
Thu 8/206:16 pm
COS
- STL
1 stop5h 25m
Delta
Deal found 6/4![Delta logo]()
$257
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Wed 7/89:06 am
ORD
- COS
Nonstop3h 03m
United Airlines
Tue 7/145:13 pm
COS
- ORD
1 stop4h 36m
United Airlines
Deal found 6/2![United Airlines logo]()
$297
This United Airlines deal was found by Cheapflights users on 5/31. 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 10/219:20 am
ORD
- COS
Nonstop2h 58m
United Airlines
Sat 10/248:00 am
COS
- ORD
Nonstop3h 02m
United Airlines
Deal found 5/31![United Airlines logo]()
$302
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 June 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 June 5, 2026.
This Delta deal was found by Cheapflights users on 5/31. 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 8/193:39 pm
STL
- COS
1 stop6h 59m
Delta
Tue 8/256:16 pm
COS
- STL
1 stop5h 25m
Delta
Deal found 5/31![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 6/4. 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 stops8h 20m
Southwest
Wed 7/155:10 pm
COS
- STL
1 stop5h 45m
Southwest
Deal found 6/4![Southwest logo]()
$308
This American Airlines deal was found by Cheapflights users on 6/4. 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.
Fri 8/74:49 pm
BMI
- COS
1 stop7h 04m
American Airlines
Wed 8/123:51 pm
COS
- BMI
1 stop6h 02m
American Airlines
Deal found 6/4![American Airlines logo]()
$309
This United Airlines deal was found by Cheapflights users on 6/2. 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 8/49:06 am
ORD
- COS
Nonstop3h 03m
United Airlines
Sat 8/81:30 pm
COS
- ORD
1 stop6h 10m
United Airlines
Deal found 6/2![United Airlines logo]()
$312
This United Airlines deal was found by Cheapflights users on 6/2. 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 9/12:42 pm
ORD
- COS
1 stop5h 05m
United Airlines
Sat 9/57:55 am
COS
- ORD
Nonstop3h 04m
United Airlines
Deal found 6/2![United Airlines logo]()
$312
This American Airlines deal was found by Cheapflights users on 6/4. 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.
Sat 7/46:00 am
PIA
- COS
2 stops9h 43m
American Airlines
Fri 7/103:46 pm
COS
- PIA
1 stop6h 54m
American Airlines
Deal found 6/4![American Airlines logo]()
$314
This Southwest deal was found by Cheapflights users on 6/4. 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 8/78:30 am
STL
- COS
2 stops8h 10m
Southwest
Wed 8/121:15 pm
COS
- STL
1 stop7h 25m
Southwest
Deal found 6/4![Southwest logo]()
$317
This Delta deal was found by Cheapflights users on 6/4. 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.
Fri 7/176:30 am
ORD
- COS
1 stop4h 57m
Delta
Wed 8/56:00 am
COS
- ORD
1 stop7h 09m
Delta
Deal found 6/4![Delta logo]()
$339
This United Airlines deal was found by Cheapflights users on 5/31. 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 8/258:46 am
ORD
- COS
Nonstop2h 47m
United Airlines
Fri 9/411:55 am
COS
- ORD
Nonstop2h 43m
United Airlines
Deal found 5/31![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 6/2. 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.
Tue 8/42:00 pm
MDW
- COS
2 stops7h 10m
Southwest
Sat 8/810:40 am
COS
- MDW
Nonstop2h 20m
Southwest
Deal found 6/2![Southwest logo]()
$334
This Delta deal was found by Cheapflights users on 6/1. 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.
Mon 10/194:00 pm
BMI
- COS
1 stop6h 21m
Delta
Sat 10/246:00 am
COS
- BMI
1 stop8h 16m
Delta
Deal found 6/1![Delta logo]()
$339
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Wed 7/15:00 am
ORD
- COS
1 stop4h 41m
United Airlines
Tue 7/712:08 pm
COS
- ORD
Nonstop2h 45m
United Airlines
Deal found 6/2![United Airlines logo]()
$326
This Southwest deal was found by Cheapflights users on 6/1. 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.
Mon 9/145:55 am
STL
- COS
1 stop7h 50m
Southwest
Fri 9/1811:20 am
COS
- STL
2 stops7h 50m
Southwest
Deal found 6/1![Southwest logo]()
$341
This Delta deal was found by Cheapflights users on 5/31. 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 8/296:20 am
STL
- COS
2 stops12h 16m
Delta
Wed 9/211:27 am
COS
- STL
2 stops8h 15m
Delta
Deal found 5/31![Delta logo]()
$352
This American Airlines deal was found by Cheapflights users on 6/3. 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 8/194:32 pm
MLI
- COS
1 stop7h 21m
American Airlines
Sun 8/238:00 am
COS
- MLI
1 stop7h 02m
American Airlines
Deal found 6/3![American Airlines logo]()
$388
This Southwest deal was found by Cheapflights users on 5/31. 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 7/285:25 pm
MDW
- COS
1 stop7h 25m
Southwest
Sat 8/112:00 pm
COS
- MDW
2 stops8h 15m
Southwest
Deal found 5/31![Southwest logo]()
$354
This KAYAK deal was found by Cheapflights users on 6/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1310:00 am
ORD
- COS
Nonstop2h 52m
American Airlines
Tue 7/1412:22 pm
COS
- ORD
Nonstop2h 52m
American Airlines
Deal found 6/1![American Airlines logo]()
$391
This Delta deal was found by Cheapflights users on 6/1. 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 11/1011:00 am
MLI
- COS
2 stops12h 30m
Delta
Sun 11/151:40 pm
COS
- MLI
1 stop7h 50m
Delta
Deal found 6/1![Delta logo]()
$374
This United Airlines deal was found by Cheapflights users on 6/3. 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.
Sat 8/152:05 pm
PAH
- COS
1 stop8h 22m
United Airlines
Wed 8/1912:20 pm
COS
- PAH
1 stop5h 50m
United Airlines
Deal found 6/3![United Airlines logo]()
$378
This American Airlines deal was found by Cheapflights users on 5/31. 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 7/311:43 am
MLI
- COS
2 stops11h 40m
American Airlines
Thu 7/912:22 pm
COS
- MLI
1 stop4h 56m
American Airlines
Deal found 5/31![American Airlines logo]()
$393
This Southwest deal was found by Cheapflights users on 5/31. 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 7/165:15 am
MDW
- COS
1 stop4h 40m
Southwest
Thu 7/167:55 pm
COS
- MDW
1 stop8h 30m
Southwest
Deal found 5/31![Southwest logo]()
$371
This Delta deal was found by Cheapflights users on 5/31. 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 8/66:05 am
MDW
- COS
1 stop7h 10m
Delta
Tue 8/1111:27 am
COS
- MDW
2 stops10h 09m
Delta
Deal found 5/31![Delta logo]()
$378
This United Airlines deal was found by Cheapflights users on 6/3. 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 7/169:06 am
ORD
- COS
Nonstop3h 03m
United Airlines
Mon 7/2012:11 pm
COS
- ORD
Nonstop2h 45m
United Airlines
Deal found 6/3![United Airlines logo]()
$381
This American Airlines deal was found by Cheapflights users on 6/2. 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.
Tue 6/305:30 pm
EVV
- COS
1 stop5h 54m
American Airlines
Tue 7/78:01 am
COS
- EVV
1 stop7h 42m
American Airlines
Deal found 6/2![American Airlines logo]()
$403
This Southwest deal was found by Cheapflights users on 6/2. 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 7/251:00 pm
MDW
- COS
2 stops8h 40m
Southwest
Mon 7/277:55 pm
COS
- MDW
1 stop8h 30m
Southwest
Deal found 6/2![Southwest logo]()
$376
This United Airlines deal was found by Cheapflights users on 5/31. 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 11/105:20 pm
PIA
- COS
1 stop5h 20m
United Airlines
Sat 11/143:25 pm
COS
- PIA
1 stop4h 22m
United Airlines
Deal found 5/31![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 6/4. 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.
Sat 7/114:18 pm
BMI
- COS
1 stop5h 49m
Delta
Sat 7/186:50 am
COS
- BMI
1 stop7h 44m
Delta
Deal found 6/4![Delta logo]()
$404
This Southwest deal was found by Cheapflights users on 6/3. 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 7/112:20 pm
MDW
- COS
2 stops7h 10m
Southwest
Wed 7/86:10 pm
COS
- MDW
1 stop5h 00m
Southwest
Deal found 6/3![Southwest logo]()
$385
This United Airlines deal was found by Cheapflights users on 5/30. 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 10/316:00 am
BMI
- COS
1 stop6h 18m
United Airlines
Wed 11/412:16 pm
COS
- BMI
1 stop4h 36m
United Airlines
Deal found 5/30![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 5/31. 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.
Sun 10/184:00 pm
BMI
- COS
1 stop6h 21m
Delta
Fri 10/231:40 pm
COS
- BMI
1 stop7h 43m
Delta
Deal found 5/31![Delta logo]()
$417
Last-minute flights from Illinois to Colorado SpringsDiscover last-minute flight deals from Illinois to Colorado Springs. Data last updated June 5, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Colorado Springs. Data last updated June 5, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 6/4. 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.
Sun 6/287:35 pm
STL
- COS
1 stop6h 10m
Southwest
Sat 7/45:15 am
COS
- STL
1 stop5h 15m
Southwest
Deal found 6/4![Southwest logo]()
$317
This United Airlines deal was found by Cheapflights users on 6/2. 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 6/306:00 am
STL
- COS
1 stop6h 09m
United Airlines
Sat 7/412:11 pm
COS
- STL
1 stop5h 02m
United Airlines
Deal found 6/2![United Airlines logo]()
$295
This United Airlines deal was found by Cheapflights users on 5/31. 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 7/17:45 pm
ORD
- COS
Nonstop3h 10m
United Airlines
Wed 7/812:11 pm
COS
- ORD
Nonstop2h 45m
United Airlines
Deal found 5/31![United Airlines logo]()
$302
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Wed 7/15:00 am
ORD
- COS
1 stop4h 41m
United Airlines
Tue 7/712:08 pm
COS
- ORD
Nonstop2h 45m
United Airlines
Deal found 6/2![United Airlines logo]()
$326
This Southwest deal was found by Cheapflights users on 6/4. 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 7/37:20 pm
STL
- COS
1 stop7h 00m
Southwest
Wed 7/155:10 pm
COS
- STL
1 stop4h 05m
Southwest
Deal found 6/4![Southwest logo]()
$303
This American Airlines deal was found by Cheapflights users on 6/4. 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.
Sat 7/46:00 am
PIA
- COS
1 stop6h 52m
American Airlines
Fri 7/103:46 pm
COS
- PIA
1 stop6h 54m
American Airlines
Deal found 6/4![American Airlines logo]()
$309
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Wed 7/89:06 am
ORD
- COS
Nonstop3h 03m
United Airlines
Tue 7/145:13 pm
COS
- ORD
1 stop4h 36m
United Airlines
Deal found 6/2![United Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 6/4. 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 7/85:00 am
ORD
- COS
1 stop5h 52m
American Airlines
Tue 7/145:15 pm
COS
- ORD
1 stop6h 35m
American Airlines
Deal found 6/4![American Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 6/2. 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 7/85:25 pm
MDW
- COS
1 stop7h 25m
Southwest
Tue 7/147:05 pm
COS
- MDW
1 stop9h 20m
Southwest
Deal found 6/2![Southwest logo]()
$307
This United Airlines deal was found by Cheapflights users on 5/31. 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 7/86:00 am
ORD
- COS
1 stop5h 46m
United Airlines
Wed 7/1512:11 pm
COS
- ORD
Nonstop2h 45m
United Airlines
Deal found 5/31![United Airlines logo]()
$320
This United Airlines deal was found by Cheapflights users on 6/2. 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 7/219:06 am
ORD
- COS
Nonstop3h 03m
United Airlines
Sat 7/255:44 am
COS
- ORD
Nonstop3h 01m
United Airlines
Deal found 6/2![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 6/3. 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 7/226:30 am
ORD
- COS
1 stop4h 57m
Delta
Tue 7/286:16 pm
COS
- ORD
2 stops12h 43m
Delta
Deal found 6/3![Delta logo]()
$312
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 June 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 June 5, 2026.
This United Airlines deal was found by Cheapflights users on 6/1. 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 7/299:06 am
ORD
- COS
Nonstop3h 03m
United Airlines
Deal found 6/1![United Airlines logo]()
$144
This United Airlines deal was found by Cheapflights users on 6/4. 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.
Wed 7/15:00 am
ORD
- COS
1 stop4h 41m
United Airlines
Deal found 6/4![United Airlines logo]()
$154
This Delta deal was found by Cheapflights users on 6/1. 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 8/256:05 am
MDW
- COS
1 stop7h 10m
Delta
Deal found 6/1![Delta logo]()
$154
This Delta deal was found by Cheapflights users on 6/3. 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 9/12:12 pm
ORD
- COS
2 stops9h 16m
Delta
Deal found 6/3![Delta logo]()
$159
This Delta deal was found by Cheapflights users on 6/4. 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.
Fri 7/31:46 pm
ORD
- COS
2 stops9h 56m
Delta
Deal found 6/4![Delta logo]()
$164
This Delta deal was found by Cheapflights users on 6/4. 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.
Fri 7/311:05 am
MDW
- COS
2 stops12h 37m
Delta
Deal found 6/4![Delta logo]()
$164
This United Airlines deal was found by Cheapflights users on 6/3. 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.
Tue 6/307:45 pm
ORD
- COS
Nonstop3h 10m
United Airlines
Deal found 6/3![United Airlines logo]()
$165
This Delta deal was found by Cheapflights users on 6/3. 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.
Sat 8/296:25 am
ORD
- COS
1 stop5h 22m
Delta
Deal found 6/3![Delta logo]()
$169
This Delta deal was found by Cheapflights users on 6/2. 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.
Sat 8/296:05 am
MDW
- COS
1 stop7h 10m
Delta
Deal found 6/2![Delta logo]()
$169
This Delta deal was found by Cheapflights users on 5/31. 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 8/2411:22 am
ORD
- COS
2 stops12h 06m
Delta
Deal found 5/31![Delta logo]()
$174
This Southwest deal was found by Cheapflights users on 6/2. 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 8/1510:05 am
MDW
- COS
2 stops8h 50m
Southwest
Deal found 6/2![Southwest logo]()
$174
This United Airlines deal was found by Cheapflights users on 5/30. 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 7/39:06 am
ORD
- COS
Nonstop3h 03m
United Airlines
Deal found 5/30![United Airlines logo]()
$176
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 June 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $197 (Delta) |
One-way from | $144 (United Airlines) |
Popular in | February |
Cheapest in | November |
Average price | $390 |
Good round-trip deal | $371 or less |
Good one-way deal | $222 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 June 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
Wed 8/19
3:39 pm-9:38 pm
1 stop6h 59m
Colorado Springs
Tue 8/25
6:16 pm-12:41 am
1 stop5h 25m
$197
St. LouisColorado Springs
STL - COS
STLCOS
Lambert-St Louis
Fri 7/3
3:20 pm-10:40 pm
2 stops8h 20m
Colorado Springs
Wed 7/15
5:10 pm-11:55 pm
1 stop5h 45m
$308
BloomingtonColorado Springs
BMI - COS
BMICOS
Bloomington-Normal
Fri 8/7
4:49 pm-10:53 pm
1 stop7h 04m
Colorado Springs
Wed 8/12
3:51 pm-10:53 pm
1 stop6h 02m
$309
ChicagoColorado Springs
ORD - COS
ORDCOS
Chicago O'Hare Intl
Tue 8/4
9:06 am-11:09 am
Nonstop3h 03m
Colorado Springs
Sat 8/8
1:30 pm-8:40 pm
1 stop6h 10m
$312
ChicagoColorado Springs
ORD - COS
ORDCOS
Chicago O'Hare Intl
Tue 9/1
2:42 pm-6:47 pm
1 stop5h 05m
Colorado Springs
Sat 9/5
7:55 am-11:59 am
Nonstop3h 04m
$312
PeoriaColorado Springs
PIA - COS
PIACOS
Greater Peoria
Sat 7/4
6:00 am-2:43 pm
2 stops9h 43m
Colorado Springs
Fri 7/10
3:46 pm-11:40 pm
1 stop6h 54m
$314
St. LouisColorado Springs
STL - COS
STLCOS
Lambert-St Louis
Fri 8/7
8:30 am-3:40 pm
2 stops8h 10m
Colorado Springs
Wed 8/12
1:15 pm-9:40 pm
1 stop7h 25m
$317
Quickest round-trip
ChicagoColorado Springs
ORD - COS
ORDCOS
Chicago O'Hare Intl
Tue 8/25
8:46 am-10:33 am
Nonstop2h 47m
Colorado Springs
Fri 9/4
11:55 am-3:38 pm
Nonstop2h 43m
$319
ChicagoColorado Springs
ORD - COS
ORDCOS
Chicago O'Hare Intl
Wed 7/1
5:00 am-8:41 am
1 stop4h 41m
Colorado Springs
Tue 7/7
12:08 pm-3:53 pm
Nonstop2h 45m
$326
ChicagoColorado Springs
MDW - COS
MDWCOS
Chicago Midway
Tue 8/4
2:00 pm-8:10 pm
2 stops7h 10m
Colorado Springs
Sat 8/8
10:40 am-2:00 pm
Nonstop2h 20m
$334
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.
ORD-COS
MDW-COS
STL-COS
MLI-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
ORD-COS
MDW-COS
STL-COS
MLI-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 June 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 24% 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 June 5, 2026.
The most flights from USIL to COS are scheduled on a Wednesday (6 on average). You will have fewer flight options on Saturday, 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?
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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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 June 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 June 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 June 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$191 | Average$413 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$239 | Average$453 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$246 | Average$409 | FlexibilityNo cancel fee | On-time69% |