$92+ Cheap flights from Chicago (CHI) to Denver (DEN)
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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — DEN
Sep 21 — Sep 281
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Chicago to Denver 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Chicago to Denver Intl are usually found in October or January, booked 85 days in advance, depart on a Wednesday or Saturday and return on a Friday
Cheap flight deals from Chicago to Denver
Cheapest
Best
Last-minute
One-way
Cheapest flights from Chicago to DenverExplore the most affordable flight options available from Chicago to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
Explore the most affordable flight options available from Chicago to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:30 am -
Nonstop2h 56m
Wed 11/410:40 am -
1 stop7h 28m
Deal found 8/21![Frontier logo]()
$152
This Super.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:30 am -
Nonstop2h 45m
Wed 9/238:55 pm -
Nonstop2h 28m
Deal found 8/17![Frontier logo]()
$153
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:30 am -
Nonstop2h 49m
Tue 10/208:55 pm -
Nonstop2h 29m
Deal found 8/18![Frontier logo]()
$154
This Priceline deal was found by Cheapflights users on 8/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:30 am -
Nonstop2h 45m
Mon 9/218:55 pm -
Nonstop2h 28m
Deal found 8/20![Frontier logo]()
$155
This Cheapflightsfares deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/173:50 pm -
1 stop24h 47m
Tue 9/2210:44 am -
1 stop6h 39m
Deal found 8/17![Frontier logo]()
$156
This Cheapflightsfares deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/79:10 pm -
1 stop11h 57m
Mon 9/147:45 am -
Nonstop2h 36m
Deal found 8/17![Frontier logo]()
$157
This Expedia deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/191:06 pm -
1 stop9h 43m
Mon 9/2110:44 am -
1 stop12h 00m
Deal found 8/17![Frontier logo]()
$158
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:01 pm -
1 stop14h 29m
Tue 10/206:10 am -
1 stop7h 15m
Deal found 8/18![Frontier logo]()
$158
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:46 pm -
1 stop10h 29m
Fri 10/98:45 pm -
1 stop7h 31m
Deal found 8/18![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:30 am -
Nonstop2h 45m
Wed 9/166:09 am -
1 stop7h 08m
Deal found 8/20![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:30 am -
Nonstop2h 45m
Tue 9/2210:44 am -
1 stop6h 39m
Deal found 8/21![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/116:30 am -
Nonstop2h 49m
Sat 10/178:55 pm -
Nonstop2h 29m
Deal found 8/19![Frontier logo]()
$162
Best flights from Chicago to DenverDiscover carefully curated flight deals from Chicago to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
Discover carefully curated flight deals from Chicago to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
This United Airlines deal was found by Cheapflights users on 8/20. 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 9/155:00 am -
Nonstop2h 39m
Tue 9/293:47 pm -
Nonstop2h 42m
Deal found 8/20![United Airlines logo]()
$213
This Southwest deal was found by Cheapflights users on 8/21. 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 12/45:45 pm -
Nonstop2h 40m
Mon 12/77:05 am -
Nonstop2h 25m
Deal found 8/21![Southwest logo]()
$225
This Delta deal was found by Cheapflights users on 8/20. 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 10/2012:27 pm -
1 stop4h 22m
Mon 10/266:20 am -
1 stop5h 27m
Deal found 8/20![Delta logo]()
$233
This Sun Country Air deal was found by Cheapflights users on 8/18. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:42 am -
1 stop4h 57m
Fri 11/277:23 pm -
1 stop12h 33m
Deal found 8/18![Sun Country Air logo]()
$335
This Alaska Airlines deal was found by Cheapflights users on 8/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:21 pm -
1 stop28h 40m
Tue 10/136:59 pm -
2 stops22h 21m
Deal found 8/21![Alaska Airlines logo]()
$437
This Delta deal was found by Cheapflights users on 8/21. 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 10/179:29 am -
1 stop6h 37m
Tue 10/206:20 am -
1 stop5h 27m
Deal found 8/21![Delta logo]()
$233
This Southwest deal was found by Cheapflights users on 8/21. 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 9/308:55 am -
1 stop5h 35m
Fri 10/211:20 am -
1 stop4h 55m
Deal found 8/21![Southwest logo]()
$240
This Delta deal was found by Cheapflights users on 8/21. 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 1/76:00 am -
1 stop7h 03m
Tue 1/122:20 pm -
1 stop6h 17m
Deal found 8/21![Delta logo]()
$233
This Delta deal was found by Cheapflights users on 8/20. 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 10/1011:09 am -
1 stop6h 59m
Sun 10/1112:59 am -
1 stop5h 42m
Deal found 8/20![Delta logo]()
$235
This Southwest deal was found by Cheapflights users on 8/21. 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 9/96:00 pm -
Nonstop2h 40m
Mon 9/148:25 pm -
Nonstop2h 25m
Deal found 8/21![Southwest logo]()
$272
This Delta deal was found by Cheapflights users on 8/20. 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 9/119:29 am -
1 stop5h 28m
Tue 9/156:30 am -
1 stop5h 09m
Deal found 8/20![Delta logo]()
$245
This Southwest deal was found by Cheapflights users on 8/19. 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 11/205:55 am -
Nonstop2h 50m
Sun 11/227:10 am -
Nonstop2h 20m
Deal found 8/19![Southwest logo]()
$275
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/1210:00 pm -
Nonstop2h 58m
Sun 2/145:42 pm -
Nonstop2h 31m
Deal found 8/17![United Airlines logo]()
$336
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/99:30 am -
1 stop5h 33m
Fri 2/126:45 am -
1 stop4h 48m
Deal found 8/17![Delta logo]()
$264
This Southwest deal was found by Cheapflights users on 8/21. 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 9/114:25 pm -
Nonstop2h 35m
Sun 9/1310:45 am -
1 stop4h 50m
Deal found 8/21![Southwest logo]()
$296
This Delta deal was found by Cheapflights users on 8/18. 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 10/95:31 pm -
1 stop7h 13m
Sun 10/116:20 am -
1 stop5h 27m
Deal found 8/18![Delta logo]()
$276
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/172:21 pm -
1 stop8h 51m
Tue 10/2012:31 pm -
2 stops16h 09m
Deal found 8/18![Alaska Airlines logo]()
$458
This Delta deal was found by Cheapflights users on 8/19. 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 2/96:00 am -
1 stop5h 12m
Fri 2/126:45 am -
1 stop4h 52m
Deal found 8/19![Delta logo]()
$284
This United Airlines deal was found by Cheapflights users on 8/20. 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 1/156:00 am -
Nonstop2h 42m
Mon 1/188:30 pm -
1 stop13h 23m
Deal found 8/20![United Airlines logo]()
$467
This Delta deal was found by Cheapflights users on 8/20. 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 10/95:31 pm -
1 stop7h 13m
Sun 10/1112:59 am -
1 stop7h 18m
Deal found 8/20![Delta logo]()
$299
This Delta deal was found by Cheapflights users on 8/21. 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 12/215:45 pm -
1 stop5h 50m
Sat 1/911:10 am -
1 stop4h 39m
Deal found 8/21![Delta logo]()
$316
This Delta deal was found by Cheapflights users on 8/21. 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 11/226:30 am -
1 stop4h 30m
Thu 11/266:05 am -
1 stop6h 54m
Deal found 8/21![Delta logo]()
$326
Last-minute flights from Chicago to DenverDiscover last-minute flight deals from Chicago to Denver. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Denver. Data last updated August 22, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/79:10 pm -
1 stop11h 57m
Mon 9/147:45 am -
Nonstop2h 36m
Deal found 8/17![Frontier logo]()
$157
This deal was found by Cheapflights users on 8/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/72:41 pm -
Nonstop3h 04m
Thu 9/104:11 pm -
1 stop7h 34m
Deal found 8/19![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:30 am -
Nonstop2h 45m
Wed 9/166:09 am -
1 stop7h 08m
Deal found 8/20![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:30 am -
Nonstop2h 45m
Wed 9/236:09 am -
1 stop7h 08m
Deal found 8/18![Frontier logo]()
$152
This Trip.com deal was found by Cheapflights users on 8/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:30 am -
Nonstop2h 45m
Mon 9/149:16 pm -
1 stop16h 01m
Deal found 8/21![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:30 am -
Nonstop2h 45m
Tue 9/2210:44 am -
1 stop6h 39m
Deal found 8/21![Frontier logo]()
$161
This Cheapflightsfares deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/173:50 pm -
1 stop24h 47m
Tue 9/2210:44 am -
1 stop6h 39m
Deal found 8/17![Frontier logo]()
$156
This CheapOair deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1812:54 pm -
1 stop9h 55m
Mon 9/2110:44 am -
1 stop6h 07m
Deal found 8/17![Frontier logo]()
$168
This Expedia deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/191:06 pm -
1 stop9h 43m
Mon 9/2110:44 am -
1 stop12h 00m
Deal found 8/17![Frontier logo]()
$158
This Frontier deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/194:35 pm -
1 stop6h 14m
Sat 9/267:12 pm -
1 stop14h 08m
Deal found 8/17![Frontier logo]()
$159
This Super.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:30 am -
Nonstop2h 45m
Wed 9/238:55 pm -
Nonstop2h 28m
Deal found 8/17![Frontier logo]()
$153
This Priceline deal was found by Cheapflights users on 8/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:30 am -
Nonstop2h 45m
Mon 9/218:55 pm -
Nonstop2h 28m
Deal found 8/20![Frontier logo]()
$155
One-way flights from Chicago to DenverSearch for one-way flight options from Chicago to Denver. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
Search for one-way flight options from Chicago to Denver. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This Super.com deal was found by Cheapflights users on 8/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:06 pm -
1 stop9h 43m
Deal found 8/20![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 8/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:55 pm -
1 stop27h 49m
Deal found 8/20![Frontier logo]()
$92
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/191:06 pm -
1 stop9h 43m
Deal found 8/21![Frontier logo]()
$93
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:00 am -
1 stop11h 01m
Deal found 8/21![Frontier logo]()
$93
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2112:54 pm -
1 stop9h 55m
Deal found 8/21![Frontier logo]()
$94
This Mytrip deal was found by Cheapflights users on 8/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:01 pm -
1 stop9h 48m
Deal found 8/20![Frontier logo]()
$94
This Trip.com deal was found by Cheapflights users on 8/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/61:21 pm -
1 stop21h 46m
Deal found 8/22![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:25 am -
1 stop15h 38m
Deal found 8/17![Frontier logo]()
$97
This Booking.com deal was found by Cheapflights users on 8/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/123:30 pm -
1 stop9h 16m
Deal found 8/18![Frontier logo]()
$98
This Mytrip deal was found by Cheapflights users on 8/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:46 pm -
1 stop7h 10m
Deal found 8/20![Frontier logo]()
$100
This Cheapflightsfares deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:05 am -
1 stop27h 02m
Deal found 8/17![Frontier logo]()
$101
This Super.com deal was found by Cheapflights users on 8/19. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/101:12 pm -
1 stop9h 37m
Deal found 8/19![Frontier logo]()
$102
Find flight deals from Chicago to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $152 (Frontier) |
One-way from | $92 (Super.com) |
Popular in | July |
Cheapest in | October |
Average price | $265 |
Good round-trip deal | $237 or less |
Good one-way deal | $160 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago to Denver 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 7,457,451 searches. Data last updated August 22, 2026.
Use the filters below to find and compare flights from Chicago to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoDenver
ORD Chicago O'Hare Intl - DEN Denver Intl
ORDDEN
Chicago O'Hare Intl
Tue 9/15
5:00 am-6:39 am
Nonstop2h 39m
Denver Intl
Tue 9/29
3:47 pm-7:29 pm
Nonstop2h 42m
$213
Quickest round-trip
ChicagoDenver
MDW Chicago Midway - DEN Denver Intl
MDWDEN
Chicago Midway
Fri 12/4
5:45 pm-7:25 pm
Nonstop2h 40m
Denver Intl
Mon 12/7
7:05 am-10:30 am
Nonstop2h 25m
$225
ChicagoDenver
MDW Chicago Midway - DEN Denver Intl
MDWDEN
Chicago Midway
Tue 10/20
12:27 pm-3:49 pm
1 stop4h 22m
Denver Intl
Mon 10/26
6:20 am-12:47 pm
1 stop5h 27m
$233
ChicagoDenver
MDW Chicago Midway - DEN Denver Intl
MDWDEN
Chicago Midway
Sat 10/17
9:29 am-3:06 pm
1 stop6h 37m
Denver Intl
Tue 10/20
6:20 am-12:47 pm
1 stop5h 27m
$233
ChicagoDenver
ORD Chicago O'Hare Intl - DEN Denver Intl
ORDDEN
Chicago O'Hare Intl
Thu 1/7
6:00 am-12:03 pm
1 stop7h 03m
Denver Intl
Tue 1/12
2:20 pm-9:37 pm
1 stop6h 17m
$233
ChicagoDenver
ORD Chicago O'Hare Intl - DEN Denver Intl
ORDDEN
Chicago O'Hare Intl
Sat 10/10
11:09 am-5:08 pm
1 stop6h 59m
Denver Intl
Sun 10/11
12:59 am-7:41 am
1 stop5h 42m
$235
ChicagoDenver
MDW Chicago Midway - DEN Denver Intl
MDWDEN
Chicago Midway
Wed 9/30
8:55 am-1:30 pm
1 stop5h 35m
Denver Intl
Fri 10/2
11:20 am-5:15 pm
1 stop4h 55m
$240
ChicagoDenver
MDW Chicago Midway - DEN Denver Intl
MDWDEN
Chicago Midway
Fri 9/11
9:29 am-1:57 pm
1 stop5h 28m
Denver Intl
Tue 9/15
6:30 am-12:39 pm
1 stop5h 09m
$245
ChicagoDenver
MDW Chicago Midway - DEN Denver Intl
MDWDEN
Chicago Midway
Tue 2/9
9:30 am-2:03 pm
1 stop5h 33m
Denver Intl
Fri 2/12
6:45 am-12:33 pm
1 stop4h 48m
$264
ChicagoDenver
MDW Chicago Midway - DEN Denver Intl
MDWDEN
Chicago Midway
Wed 9/9
6:00 pm-7:40 pm
Nonstop2h 40m
Denver Intl
Mon 9/14
8:25 pm-11:50 pm
Nonstop2h 25m
$272
Showing 1-10 of 45 resultsSorted by cheapest first
Compare providers for flights from Chicago to Denver
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Denver in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Chicago-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Denver flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Chicago-Denver flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Chicago to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Chicago with our price prediction graph.
CHI-DEN
MDW-DEN
ORD-DEN
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 Chicago to Denver
CHI-DEN
MDW-DEN
ORD-DEN
What is the cheapest month to book a flight from Chicago to Denver?
Currently, January is the cheapest month in which you can book a flight from Chicago to Denver (average of $212). Flying from Chicago to Denver in June is currently the most expensive (average of $311). 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 CHI to DEN?
Find hourly flight availability from Chicago to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 22, 2026.
A simple way to save on the total cost of your ticket is to fly from Chicago to Denver in the evening. If you’re flexible enough to do this you can expect to save up to 17% on your trip compared to booking a flight in the morning.
Weekly flight availability from Chicago to Denver
Explore weekly flight availability from Chicago to Denver. 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 August 22, 2026.
The most flights from CHI to DEN are scheduled on a Friday (72 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (37 on average).
How much does it cost to fly round-trip from Chicago to Denver?
Airfare is below average for this route at the moment.
Chicago to Denver flights typically cost between $192 and $325 in October.The cheapest round-trip price found within the last 5 days was $152 on Frontier (Oct 30-Nov 4).
How often are flights from Chicago to Denver delayed?
About 20% of weekly flights between Chicago and Denver have experienced delays in the past year, with the average delay time being 146 minutes.
What is the most punctual flight time for Chicago to Denver flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Chicago to Denver flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 16% of flights being delayed.
How far ahead should I book a flight from Chicago to Denver?
The price you pay for your flight from Chicago to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 84 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from Chicago to Denver?
Use this chart to determine the cheapest time to fly round-trip from Chicago to Denver. Price data was last updated on August 15, 2026.
Travelers seeking maximum savings on their Chicago to Denver flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
The best insider tips for Chicago to Denver flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago to Denver trip
Our travel experts
Reviews of airlines servicing Denver
Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated August 22, 2026.
Peruse reviews from past customers who have flown with Southwest,United Airlines, andAmerican Airlines from Chicago to Denver to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Chicago to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsThornton
Westminster
Black Hawk
Lakewood
Centennial
Broomfield
Golden
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Greeley
Cripple Creek
Winter Park
Limon
Manitou Springs
Frisco
Englewood
Glendale
Evergreen
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
Complete your trip
Denver flight routes
Flights by cabin class
Other flight options
Other flights from Chicago
Popular flights
Alternative routes for Chicago to Denver
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.
Other flights to Denver
Explore flights to Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 22, 2026.
Search flights from Chicago to Denver by cabin class
Find flights from Chicago to Denver, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Chicago and Denver flights
Browse other Chicago and Denver flight options. Last updated on August 22, 2026.
Other flights from Chicago
Browse through other flights departing from Chicago. Flights are based on user searches made on Cheapflights and were last updated on August 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Chicago to Denver
Discover the top 6 airlines that operate flights from Chicago to Denver. 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 7,457,451 searches. Data last updated August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$70 | Average$180 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$105 | Average$284 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$145 | Average$223 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$156 | Average$300 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$157 | Average$304 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$170 | Average$308 | FlexibilityNo cancel fee | On-time69% |