$90+ Cheap flights from Washington, D.C. (WAS) to Colorado
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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
Sep 1 — Sep 81
Round-trip
1 adult, Economy
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Find cheap flights from Washington, D.C. to Colorado with Cheapflights
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Cheapest flights from Washington, D.C. to ColoradoExplore the most affordable flight options available from Washington, D.C. to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2026.
Explore the most affordable flight options available from Washington, D.C. to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2026.
This Frontier deal was found by Cheapflights users on 7/31. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:20 pm
DCA
- DEN
Nonstop4h 09m
Frontier
Thu 12/174:39 pm
DEN
- DCA
Nonstop3h 19m
Frontier
Deal found 7/31![Frontier logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/234:36 pm
IAD
- DEN
2 stops17h 01m
Frontier
Wed 9/3012:24 pm
DEN
- IAD
1 stop9h 46m
Frontier
Deal found 8/1![Frontier logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:24 pm
IAD
- DEN
2 stops10h 24m
Frontier
Sat 9/510:43 am
DEN
- IAD
1 stop10h 09m
Frontier
Deal found 7/30![Frontier logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:50 am
IAD
- DEN
2 stops15h 49m
Frontier
Sun 9/2710:50 pm
DEN
- IAD
1 stop29h 30m
Frontier
Deal found 8/1![Frontier logo]()
$268
This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/141:59 pm
DCA
- DEN
Nonstop3h 54m
Frontier
Sat 8/2211:25 am
DEN
- DCA
Nonstop3h 34m
Frontier
Deal found 7/30![Frontier logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:28 pm
IAD
- DEN
1 stop12h 39m
Frontier
Tue 9/810:04 am
DEN
- IAD
2 stops10h 48m
Frontier
Deal found 7/30![Frontier logo]()
$269
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:00 am
DCA
- DEN
Nonstop4h 01m
Frontier
Thu 8/204:28 pm
DEN
- DCA
Nonstop3h 31m
Frontier
Deal found 7/30![Frontier logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/49:04 pm
IAD
- DEN
1 stop13h 00m
Frontier
Thu 10/811:59 pm
DEN
- IAD
2 stops15h 37m
Frontier
Deal found 7/30![Frontier logo]()
$270
This CheapOair deal was found by Cheapflights users on 7/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/91:38 pm
IAD
- DEN
1 stop8h 26m
Frontier
Mon 10/1211:59 pm
DEN
- IAD
1 stop17h 10m
Frontier
Deal found 7/31![Frontier logo]()
$271
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/31:59 pm
DCA
- DEN
Nonstop3h 54m
Frontier
Wed 9/94:28 pm
DEN
- DCA
Nonstop3h 31m
Frontier
Deal found 7/29![Frontier logo]()
$271
This Trip.com deal was found by Cheapflights users on 7/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:28 pm
IAD
- DEN
1 stop28h 16m
Frontier
Sun 9/66:30 am
DEN
- IAD
1 stop8h 44m
Frontier
Deal found 7/31![Frontier logo]()
$272
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 am
DCA
- DEN
Nonstop4h 01m
Frontier
Fri 8/217:30 am
DEN
- DCA
Nonstop3h 21m
Frontier
Deal found 7/29![Frontier logo]()
$272
Best flights from Washington, D.C. to ColoradoDiscover carefully curated flight deals from Washington, D.C. to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 2, 2026.
Discover carefully curated flight deals from Washington, D.C. to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 2, 2026.
This United Airlines deal was found by Cheapflights users on 7/31. 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 12/2210:35 pm
IAD
- DEN
Nonstop4h 03m
United Airlines
Tue 12/296:00 am
DEN
- IAD
Nonstop3h 21m
United Airlines
Deal found 7/31![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/204:10 pm
BWI
- DEN
Nonstop3h 50m
Southwest
Wed 8/266:40 am
DEN
- BWI
Nonstop3h 25m
Southwest
Deal found 7/28![Southwest logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:15 pm
BWI
- DEN
2 stops29h 57m
Alaska Airlines
Fri 10/309:45 am
DEN
- BWI
2 stops17h 35m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$323
This Delta deal was found by Cheapflights users on 7/31. 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 1/2810:05 am
IAD
- DEN
1 stop7h 10m
Delta
Sat 1/3012:59 am
DEN
- IAD
1 stop6h 12m
Delta
Deal found 7/31![Delta logo]()
$339
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:26 am
BWI
- DRO
1 stop6h 34m
American Airlines
Sun 9/66:52 am
DRO
- BWI
1 stop6h 10m
American Airlines
Deal found 8/1![American Airlines logo]()
$348
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/64:18 pm
BWI
- DEN
Nonstop3h 58m
United Airlines
Wed 9/99:40 am
DEN
- BWI
Nonstop3h 32m
United Airlines
Deal found 7/28![United Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:05 am
BWI
- DEN
1 stop6h 05m
Southwest
Tue 9/158:05 am
DEN
- BWI
Nonstop3h 30m
Southwest
Deal found 7/29![Southwest logo]()
$325
This Delta deal was found by Cheapflights users on 7/31. 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 9/268:08 am
IAD
- DEN
1 stop8h 43m
Delta
Fri 10/212:50 am
DEN
- IAD
1 stop7h 13m
Delta
Deal found 7/31![Delta logo]()
$339
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/234:50 pm
DCA
- DEN
1 stop5h 00m
Southwest
Tue 9/298:35 am
DEN
- DCA
1 stop5h 35m
Southwest
Deal found 7/28![Southwest logo]()
$328
This Delta deal was found by Cheapflights users on 8/1. 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.
Thu 12/2412:05 pm
DCA
- DEN
1 stop7h 17m
Delta
Sun 12/2712:20 am
DEN
- DCA
1 stop6h 24m
Delta
Deal found 8/1![Delta logo]()
$339
This United Airlines deal was found by Cheapflights users on 7/30. 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 8/296:15 am
IAD
- COS
1 stop6h 18m
United Airlines
Sat 9/57:50 am
COS
- IAD
1 stop6h 12m
United Airlines
Deal found 7/30![United Airlines logo]()
$355
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:15 pm
BWI
- DEN
2 stops26h 11m
Alaska Airlines
Mon 9/218:08 am
DEN
- BWI
1 stop29h 32m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$391
This Southwest deal was found by Cheapflights users on 8/1. 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.
Tue 8/254:50 pm
DCA
- DEN
1 stop5h 00m
Southwest
Wed 8/264:35 pm
DEN
- DCA
1 stop5h 20m
Southwest
Deal found 8/1![Southwest logo]()
$334
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:10 am
DCA
- DEN
1 stop5h 38m
Delta
Wed 9/2312:55 am
DEN
- DCA
1 stop5h 40m
Delta
Deal found 7/28![Delta logo]()
$339
This Southwest deal was found by Cheapflights users on 7/31. 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.
Mon 9/144:35 pm
DCA
- DEN
1 stop6h 40m
Southwest
Sat 9/197:15 am
DEN
- DCA
1 stop4h 50m
Southwest
Deal found 7/31![Southwest logo]()
$334
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Thu 9/310:10 am
IAD
- DEN
Nonstop3h 51m
United Airlines
Mon 9/711:59 pm
DEN
- IAD
Nonstop3h 26m
United Airlines
Deal found 7/30![United Airlines logo]()
$374
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:00 pm
DCA
- COS
1 stop8h 16m
Delta
Sat 10/241:26 pm
COS
- DCA
1 stop8h 22m
Delta
Deal found 7/28![Delta logo]()
$355
This Southwest deal was found by Cheapflights users on 7/29. 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.
Wed 9/24:50 pm
DCA
- DEN
1 stop5h 00m
Southwest
Sun 9/610:55 am
DEN
- DCA
2 stops7h 25m
Southwest
Deal found 7/29![Southwest logo]()
$337
This Delta deal was found by Cheapflights users on 7/30. 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.
Thu 9/109:40 am
DCA
- COS
2 stops12h 16m
Delta
Thu 9/171:25 pm
COS
- DCA
1 stop8h 19m
Delta
Deal found 7/30![Delta logo]()
$360
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Sun 10/255:04 am
BWI
- DRO
2 stops9h 20m
American Airlines
Sat 10/3110:28 am
DRO
- BWI
1 stop6h 58m
American Airlines
Deal found 7/30![American Airlines logo]()
$537
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/226:15 am
IAD
- COS
1 stop6h 32m
United Airlines
Wed 9/233:09 pm
COS
- IAD
1 stop6h 10m
United Airlines
Deal found 7/31![United Airlines logo]()
$406
This Southwest deal was found by Cheapflights users on 7/31. 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.
Mon 9/146:40 pm
DCA
- DEN
1 stop5h 10m
Southwest
Mon 9/219:00 am
DEN
- DCA
1 stop4h 55m
Southwest
Deal found 7/31![Southwest logo]()
$339
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Fri 9/2510:34 pm
IAD
- DEN
Nonstop3h 56m
United Airlines
Tue 9/295:56 pm
DEN
- IAD
Nonstop3h 29m
United Airlines
Deal found 7/31![United Airlines logo]()
$409
This Southwest deal was found by Cheapflights users on 7/31. 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 1/287:25 am
DCA
- DEN
1 stop7h 45m
Southwest
Sun 1/316:10 am
DEN
- DCA
1 stop5h 55m
Southwest
Deal found 7/31![Southwest logo]()
$339
This Delta deal was found by Cheapflights users on 7/31. 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 9/222:00 pm
DCA
- COS
1 stop7h 56m
Delta
Wed 9/231:25 pm
COS
- DCA
1 stop8h 19m
Delta
Deal found 7/31![Delta logo]()
$389
This American Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/77:57 am
IAD
- GJT
2 stops12h 29m
American Airlines
Sat 9/1210:32 am
GJT
- IAD
1 stop7h 52m
American Airlines
Deal found 7/28![American Airlines logo]()
$589
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Fri 8/212:43 pm
IAD
- DEN
Nonstop3h 50m
United Airlines
Mon 8/2411:59 pm
DEN
- IAD
Nonstop3h 26m
United Airlines
Deal found 7/31![United Airlines logo]()
$409
This Southwest deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:50 pm
DCA
- DEN
1 stop6h 10m
Southwest
Tue 9/2912:45 pm
DEN
- DCA
1 stop6h 10m
Southwest
Deal found 8/1![Southwest logo]()
$339
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:28 am
IAD
- COS
1 stop5h 47m
Delta
Wed 9/96:00 am
COS
- IAD
1 stop6h 11m
Delta
Deal found 7/28![Delta logo]()
$389
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:09 am
IAD
- DRO
1 stop7h 51m
American Airlines
Mon 8/176:52 am
DRO
- IAD
2 stops12h 04m
American Airlines
Deal found 8/1![American Airlines logo]()
$599
Last-minute flights from Washington, D.C. to ColoradoDiscover last-minute flight deals from Washington, D.C. to Colorado. Data last updated August 2, 2026 and is based on user searches.
Discover last-minute flight deals from Washington, D.C. to Colorado. Data last updated August 2, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/49:38 pm
IAD
- DEN
1 stop10h 52m
Frontier
Sat 8/810:00 am
DEN
- IAD
1 stop10h 52m
Frontier
Deal found 7/29![Frontier logo]()
$278
This Frontier deal was found by Cheapflights users on 7/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:50 am
IAD
- DEN
1 stop10h 10m
Frontier
Mon 8/176:30 am
DEN
- IAD
1 stop8h 44m
Frontier
Deal found 7/30![Frontier logo]()
$275
This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/141:59 pm
DCA
- DEN
Nonstop3h 54m
Frontier
Sat 8/2211:25 am
DEN
- DCA
Nonstop3h 34m
Frontier
Deal found 7/30![Frontier logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/159:57 pm
IAD
- DEN
1 stop10h 33m
Frontier
Thu 8/2010:36 am
DEN
- IAD
2 stops52h 38m
Frontier
Deal found 7/29![Frontier logo]()
$271
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:00 pm
DCA
- DEN
Nonstop4h 07m
Frontier
Thu 8/204:28 pm
DEN
- DCA
Nonstop3h 31m
Frontier
Deal found 7/29![Frontier logo]()
$273
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:00 pm
DCA
- DEN
Nonstop4h 07m
Frontier
Tue 8/254:28 pm
DEN
- DCA
Nonstop3h 31m
Frontier
Deal found 7/30![Frontier logo]()
$275
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 am
DCA
- DEN
Nonstop4h 01m
Frontier
Fri 8/217:30 am
DEN
- DCA
Nonstop3h 21m
Frontier
Deal found 7/29![Frontier logo]()
$272
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:00 am
DCA
- DEN
Nonstop4h 01m
Frontier
Thu 8/204:28 pm
DEN
- DCA
Nonstop3h 31m
Frontier
Deal found 7/30![Frontier logo]()
$269
This Priceline deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/251:25 pm
DCA
- DEN
1 stop11h 17m
Multiple Airlines
Tue 9/111:25 am
DEN
- DCA
Nonstop3h 34m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:05 am
IAD
- DEN
2 stops13h 05m
Frontier
Sun 8/306:30 am
DEN
- IAD
1 stop14h 22m
Frontier
Deal found 8/1![Frontier logo]()
$276
This Priceline deal was found by Cheapflights users on 7/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:25 pm
DCA
- DEN
1 stop10h 17m
Multiple Airlines
Mon 8/3111:25 am
DEN
- DCA
Nonstop3h 34m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:24 pm
IAD
- DEN
2 stops10h 24m
Frontier
Sat 9/510:43 am
DEN
- IAD
1 stop10h 09m
Frontier
Deal found 7/30![Frontier logo]()
$267
One-way flights from Washington, D.C. to ColoradoSearch for one-way flight options from Washington, D.C. to Colorado. Find affordable one-way fares based on user searches. Data last updated August 2, 2026.
Search for one-way flight options from Washington, D.C. to Colorado. Find affordable one-way fares based on user searches. Data last updated August 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:02 pm
BWI
- DEN
1 stop26h 58m
Frontier
Deal found 7/29![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:20 am
BWI
- DEN
1 stop23h 55m
Frontier
Deal found 7/28![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:32 pm
BWI
- DEN
1 stop26h 38m
Frontier
Deal found 7/30![Frontier logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/309:32 pm
BWI
- DEN
1 stop18h 29m
Frontier
Deal found 7/30![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:00 am
BWI
- DEN
1 stop17h 24m
Frontier
Deal found 7/30![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:25 pm
BWI
- DEN
1 stop12h 39m
Frontier
Deal found 7/30![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:00 am
BWI
- DEN
1 stop17h 24m
Frontier
Deal found 8/1![Frontier logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:45 am
BWI
- DEN
1 stop17h 20m
Frontier
Deal found 8/1![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/261:24 pm
BWI
- DEN
1 stop20h 50m
Frontier
Deal found 7/31![Frontier logo]()
$105
This Super.com deal was found by Cheapflights users on 8/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/159:57 pm
IAD
- DEN
1 stop10h 33m
Frontier
Deal found 8/1![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/214:52 pm
IAD
- DEN
2 stops33h 52m
Frontier
Deal found 7/31![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/298:39 pm
IAD
- DEN
2 stops37h 35m
Frontier
Deal found 7/29![Frontier logo]()
$136
Find flight deals from Washington, D.C. to Colorado
Keep the following information in mind while searching for Washington, D.C. to Colorado flight deals. Data was last updated August 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $265 (Frontier) |
One-way from | $90 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $342 |
Good round-trip deal | $292 or less |
Good one-way deal | $165 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington, D.C. to Colorado 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 August 2, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Colorado that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Denver
IAD - DEN
IADDEN
Washington, D.C. Dulles Intl
Tue 12/22
10:35 pm-12:38 am
Nonstop4h 03m
Denver Intl
Tue 12/29
6:00 am-11:21 am
Nonstop3h 21m
$319
Quickest round-trip
BaltimoreDenver
BWI - DEN
BWIDEN
Baltimore/Washington
Thu 8/20
4:10 pm-6:00 pm
Nonstop3h 50m
Denver Intl
Wed 8/26
6:40 am-12:05 pm
Nonstop3h 25m
$319
BaltimoreDenver
BWI - DEN
BWIDEN
Baltimore/Washington
Sun 9/6
4:18 pm-6:16 pm
Nonstop3h 58m
Denver Intl
Wed 9/9
9:40 am-3:12 pm
Nonstop3h 32m
$321
BaltimoreDenver
BWI - DEN
BWIDEN
Baltimore/Washington
Fri 10/23
6:15 pm-10:12 pm
2 stops29h 57m
Denver Intl
Fri 10/30
9:45 am-5:20 am
2 stops17h 35m
$323
BaltimoreDenver
BWI - DEN
BWIDEN
Baltimore/Washington
Sat 9/12
11:05 am-3:10 pm
1 stop6h 05m
Denver Intl
Tue 9/15
8:05 am-1:35 pm
Nonstop3h 30m
$325
Washington, D.C.Denver
DCA - DEN
DCADEN
Washington, D.C. Reagan-National
Wed 9/23
4:50 pm-7:50 pm
1 stop5h 00m
Denver Intl
Tue 9/29
8:35 am-4:10 pm
1 stop5h 35m
$328
Washington, D.C.Denver
DCA - DEN
DCADEN
Washington, D.C. Reagan-National
Tue 8/25
4:50 pm-7:50 pm
1 stop5h 00m
Denver Intl
Wed 8/26
4:35 pm-11:55 pm
1 stop5h 20m
$334
Washington, D.C.Denver
DCA - DEN
DCADEN
Washington, D.C. Reagan-National
Mon 9/14
4:35 pm-9:15 pm
1 stop6h 40m
Denver Intl
Sat 9/19
7:15 am-2:05 pm
1 stop4h 50m
$334
Washington, D.C.Denver
DCA - DEN
DCADEN
Washington, D.C. Reagan-National
Wed 9/2
4:50 pm-7:50 pm
1 stop5h 00m
Denver Intl
Sun 9/6
10:55 am-8:20 pm
2 stops7h 25m
$337
Washington, D.C.Denver
IAD - DEN
IADDEN
Washington, D.C. Dulles Intl
Thu 1/28
10:05 am-3:15 pm
1 stop7h 10m
Denver Intl
Sat 1/30
12:59 am-9:11 am
1 stop6h 12m
$339
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington, D.C. to Colorado
Have a flexible travel schedule? Discover the best time to fly to Colorado from Washington, D.C. with our price prediction graph.
IAD-DEN
DCA-DEN
BWI-DEN
IAD-COS
BWI-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 Washington, D.C. to Colorado
WAS-USCO
IAD-DEN
DCA-DEN
BWI-DEN
IAD-COS
What is the cheapest month to book a flight from Washington, D.C. to Colorado?
Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Colorado (average of $283). Flying from Washington, D.C. to Colorado in June is currently the most expensive (average of $461). 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 WAS to CO?
Find hourly flight availability from Washington, D.C. to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 2, 2026.
One of the essential ways to save on airfare from Washington, D.C. to Colorado is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 9% on airfare.
Weekly flight availability from Washington, D.C. to Colorado
Explore weekly flight availability from Washington, D.C. to Colorado. 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 2, 2026.
The most flights from WAS to USCO are scheduled on a Friday (39 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (25 on average).
How much does it cost to fly round-trip from Washington, D.C. to Colorado?
Airfare is typical for this route at the moment.
Washington, D.C. to Colorado flights typically cost between $233 and $447 in December.The cheapest round-trip price found within the last 5 days was $265 on Frontier (Dec 7-Dec 17).
How far ahead should I book a flight from Washington, D.C. to Colorado?
Booking 34 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to Colorado. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from Washington, D.C. to Colorado?
Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Colorado. Price data was last updated on August 1, 2026.
Travelers seeking maximum savings on their Washington, D.C. to Colorado flight should consider departing on Tuesday at noon when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Colorado
Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated August 2, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Washington, D.C. to Colorado. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Washington, D.C. to Colorado. 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.
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Alternative routes for Washington, D.C. to Colorado
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Complete your trip
Complete your trip to Colorado by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Washington, D.C. to Colorado by cabin class
Find flights from Washington, D.C. to Colorado, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Washington, D.C. and Colorado flights
Browse other Washington, D.C. and Colorado flight options. Last updated on August 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Washington, D.C. to Colorado flights
Consider these flights traveling from Washington, D.C. to Colorado.
Top 6 airlines flying from Washington, D.C. to Colorado
Discover the top 6 airlines that operate flights from Washington, D.C. to Colorado. 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 August 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$80 | Average$272 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$113 | Average$452 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$178 | Average$434 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$209 | Average$534 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$218 | Average$532 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$223 | Average$512 | FlexibilityNo cancel fee | On-time69% |