$87+ Cheap flights from Colorado to Washington
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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEA
Sep 30 — Oct 71
Round-trip
1 adult, Economy
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Find cheap flights from Colorado to Washington 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 Colorado to WashingtonExplore the most affordable flight options available from Colorado to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 31, 2026.
Explore the most affordable flight options available from Colorado to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 31, 2026.
This deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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.
Sat 11/212:37 pm -
Nonstop3h 09m
Mon 11/306:01 pm -
Nonstop2h 59m
Deal found 8/27![Frontier logo]()
$131
This deal was found by Cheapflights users on 8/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/271:07 pm -
Nonstop3h 01m
Tue 9/294:27 pm -
Nonstop2h 54m
Deal found 8/30![Frontier logo]()
$134
This deal was found by Cheapflights users on 8/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/301:07 pm -
Nonstop3h 01m
Sun 10/44:27 pm -
Nonstop2h 54m
Deal found 8/29![Frontier logo]()
$136
This deal was found by Cheapflights users on 8/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/51:07 pm -
Nonstop3h 01m
Tue 10/64:27 pm -
Nonstop2h 54m
Deal found 8/30![Frontier logo]()
$137
This deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 9/281:07 pm -
Nonstop3h 01m
Wed 9/304:27 pm -
Nonstop2h 54m
Deal found 8/27![Frontier logo]()
$145
This Frontier deal was found by Cheapflights users on 8/30. 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.
Fri 12/41:55 pm -
Nonstop3h 11m
Sat 12/55:25 pm -
Nonstop2h 51m
Deal found 8/30![Frontier logo]()
$148
This Super.com deal was found by Cheapflights users on 8/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/191:07 pm -
Nonstop3h 01m
Tue 9/224:27 pm -
Nonstop2h 54m
Deal found 8/30![Frontier logo]()
$151
This CheapOair deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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.
Tue 9/151:07 pm -
Nonstop3h 01m
Tue 9/224:27 pm -
Nonstop2h 54m
Deal found 8/26![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 10/139:00 am -
1 stop10h 45m
Mon 11/28:09 pm -
1 stop12h 36m
Deal found 8/26![Frontier logo]()
$155
This Cheapflightsfares deal was found by Cheapflights users on 8/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/171:07 pm -
Nonstop3h 01m
Tue 9/224:27 pm -
Nonstop2h 54m
Deal found 8/29![Frontier logo]()
$156
This Super.com deal was found by Cheapflights users on 8/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:07 pm -
Nonstop3h 01m
Mon 9/284:27 pm -
Nonstop2h 54m
Deal found 8/30![Frontier logo]()
$157
This Frontier deal was found by Cheapflights users on 8/30. 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.
Tue 9/221:07 pm -
Nonstop3h 01m
Sat 9/264:27 pm -
Nonstop2h 54m
Deal found 8/30![Frontier logo]()
$158
Best flights from Colorado to WashingtonDiscover carefully curated flight deals from Colorado to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 31, 2026.
Discover carefully curated flight deals from Colorado to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 31, 2026.
This Delta deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/106:00 am -
1 stop7h 18m
Tue 10/133:30 pm -
1 stop7h 25m
Deal found 8/27![Delta logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 8/30. 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.
Wed 10/2812:31 pm -
1 stop11h 19m
Sat 10/317:19 am -
1 stop13h 53m
Deal found 8/30![Alaska Airlines logo]()
$283
This Southwest deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 11/128:40 am -
Nonstop2h 35m
Fri 11/136:25 am -
1 stop6h 10m
Deal found 8/27![Southwest logo]()
$283
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:00 am -
1 stop5h 01m
Sat 10/35:00 am -
1 stop4h 44m
Deal found 8/29![United Airlines logo]()
$287
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 12/1111:59 am -
1 stop6h 54m
Sat 1/92:35 pm -
1 stop6h 26m
Deal found 8/27![American Airlines logo]()
$338
This Alaska Airlines deal was found by Cheapflights users on 8/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:03 am -
Nonstop3h 04m
Tue 11/1710:06 am -
Nonstop2h 52m
Deal found 8/28![Alaska Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:07 pm -
1 stop4h 58m
Wed 10/211:30 pm -
1 stop7h 52m
Deal found 8/30![Delta logo]()
$287
This Southwest deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 9/235:20 pm -
1 stop7h 10m
Wed 9/306:25 am -
1 stop5h 10m
Deal found 8/26![Southwest logo]()
$287
This United Airlines deal was found by Cheapflights users on 8/28. 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.
Sat 10/241:29 pm -
1 stop5h 08m
Wed 10/283:35 pm -
2 stops7h 24m
Deal found 8/28![United Airlines logo]()
$292
This Alaska Airlines deal was found by Cheapflights users on 8/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/103:25 pm -
Nonstop3h 02m
Sat 11/146:59 pm -
Nonstop2h 39m
Deal found 8/28![Alaska Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/268:15 am -
1 stop7h 35m
Sat 10/311:22 am -
1 stop5h 09m
Deal found 8/29![Delta logo]()
$287
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/65:08 pm -
1 stop5h 07m
Tue 10/135:00 am -
1 stop4h 44m
Deal found 8/31![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/68:50 am -
2 stops7h 05m
Sat 10/106:15 am -
Nonstop2h 40m
Deal found 8/27![Southwest logo]()
$298
This Alaska Airlines deal was found by Cheapflights users on 8/29. 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.
Thu 11/58:20 am -
1 stop14h 09m
Mon 11/97:03 am -
1 stop28h 54m
Deal found 8/29![Alaska Airlines logo]()
$293
This Southwest deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 11/134:30 pm -
1 stop8h 35m
Tue 11/172:15 pm -
2 stops7h 20m
Deal found 8/27![Southwest logo]()
$298
This United Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 9/231:03 pm -
2 stops11h 23m
Wed 9/301:19 pm -
2 stops9h 40m
Deal found 8/26![United Airlines logo]()
$307
This Delta deal was found by Cheapflights users on 8/31. 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 10/18:15 am -
1 stop7h 35m
Sat 10/39:40 am -
1 stop6h 51m
Deal found 8/31![Delta logo]()
$313
This Alaska Airlines deal was found by Cheapflights users on 8/30. 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.
Tue 10/2712:00 pm -
Nonstop2h 59m
Fri 10/301:16 pm -
Nonstop2h 43m
Deal found 8/30![Alaska Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 8/31. 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.
Sat 12/126:00 am -
1 stop5h 43m
Sat 1/911:24 am -
1 stop6h 03m
Deal found 8/31![American Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 8/29. 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.
Mon 11/232:00 pm -
1 stop7h 45m
Wed 11/258:40 pm -
Nonstop2h 35m
Deal found 8/29![Southwest logo]()
$302
This United Airlines deal was found by Cheapflights users on 8/30. 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.
Sun 2/145:52 pm -
1 stop6h 29m
Sat 2/203:51 pm -
Nonstop2h 44m
Deal found 8/30![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/56:00 am -
1 stop6h 56m
Mon 10/195:20 am -
1 stop6h 29m
Deal found 8/27![Delta logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 10/167:53 am -
1 stop8h 31m
Mon 10/194:01 pm -
1 stop4h 35m
Deal found 8/26![Alaska Airlines logo]()
$299
This Southwest deal was found by Cheapflights users on 8/29. 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.
Tue 9/2912:50 pm -
2 stops8h 30m
Sat 10/311:40 am -
2 stops9h 55m
Deal found 8/29![Southwest logo]()
$317
This Delta deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 10/68:20 am -
1 stop4h 21m
Sun 10/185:20 am -
1 stop6h 29m
Deal found 8/26![Delta logo]()
$319
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:30 am -
1 stop5h 02m
Tue 9/295:00 am -
1 stop4h 44m
Deal found 8/29![United Airlines logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/37:53 am -
1 stop5h 09m
Wed 10/712:42 pm -
1 stop4h 43m
Deal found 8/27![Alaska Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/11:55 pm -
2 stops8h 35m
Tue 12/811:35 am -
2 stops8h 25m
Deal found 8/28![Southwest logo]()
$317
This Delta deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 11/246:00 am -
1 stop6h 48m
Fri 11/276:20 am -
1 stop4h 57m
Deal found 8/27![Delta logo]()
$319
This United Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 10/167:13 pm -
Nonstop2h 27m
Mon 10/195:05 am -
Nonstop2h 22m
Deal found 8/26![United Airlines logo]()
$320
Last-minute flights from Colorado to WashingtonDiscover last-minute flight deals from Colorado to Washington. Data last updated August 31, 2026 and is based on user searches.
Discover last-minute flight deals from Colorado to Washington. Data last updated August 31, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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.
Tue 9/151:07 pm -
Nonstop3h 01m
Tue 9/224:27 pm -
Nonstop2h 54m
Deal found 8/26![Frontier logo]()
$153
This Cheapflightsfares deal was found by Cheapflights users on 8/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/171:07 pm -
Nonstop3h 01m
Tue 9/224:27 pm -
Nonstop2h 54m
Deal found 8/29![Frontier logo]()
$156
This Cheapflightsfares deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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.
Fri 9/181:07 pm -
Nonstop3h 01m
Tue 9/224:27 pm -
Nonstop2h 54m
Deal found 8/27![Frontier logo]()
$169
This Super.com deal was found by Cheapflights users on 8/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/191:07 pm -
Nonstop3h 01m
Tue 9/224:27 pm -
Nonstop2h 54m
Deal found 8/30![Frontier logo]()
$151
This Super.com deal was found by Cheapflights users on 8/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:07 pm -
Nonstop3h 01m
Mon 9/284:27 pm -
Nonstop2h 54m
Deal found 8/30![Frontier logo]()
$157
This Frontier deal was found by Cheapflights users on 8/30. 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.
Tue 9/221:07 pm -
Nonstop3h 01m
Sat 9/264:27 pm -
Nonstop2h 54m
Deal found 8/30![Frontier logo]()
$158
This Cheapflightsfares deal was found by Cheapflights users on 8/31. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:07 pm -
Nonstop3h 01m
Fri 10/24:27 pm -
Nonstop2h 54m
Deal found 8/31![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 8/29. 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 9/261:07 pm -
Nonstop3h 01m
Tue 9/298:15 pm -
1 stop12h 17m
Deal found 8/29![Frontier logo]()
$166
This Booking.com deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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.
Sat 9/268:08 am -
Nonstop2h 42m
Sat 9/262:03 pm -
1 stop6h 10m
Deal found 8/26![Alaska Airlines logo]()
$217
This deal was found by Cheapflights users on 8/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/271:07 pm -
Nonstop3h 01m
Tue 9/294:27 pm -
Nonstop2h 54m
Deal found 8/30![Frontier logo]()
$134
This deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 9/281:07 pm -
Nonstop3h 01m
Wed 9/304:27 pm -
Nonstop2h 54m
Deal found 8/27![Frontier logo]()
$145
This deal was found by Cheapflights users on 8/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/301:07 pm -
Nonstop3h 01m
Sun 10/44:27 pm -
Nonstop2h 54m
Deal found 8/29![Frontier logo]()
$136
One-way flights from Colorado to WashingtonSearch for one-way flight options from Colorado to Washington. Find affordable one-way fares based on user searches. Data last updated August 31, 2026.
Search for one-way flight options from Colorado to Washington. Find affordable one-way fares based on user searches. Data last updated August 31, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 10/201:10 pm -
1 stop30h 35m
Deal found 8/26![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 10/219:00 am -
1 stop10h 45m
Deal found 8/26![Frontier logo]()
$88
This iWofly deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:07 pm -
Nonstop3h 01m
Deal found 8/27![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 11/49:10 am -
1 stop10h 44m
Deal found 8/27![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 8/28. 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.
Thu 10/151:10 pm -
1 stop30h 35m
Deal found 8/28![Frontier logo]()
$91
This Super.com deal was found by Cheapflights users on 8/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/281:07 pm -
Nonstop3h 01m
Deal found 8/30![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 8/28. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/11:07 pm -
Nonstop3h 01m
Deal found 8/28![Frontier logo]()
$93
This Cheapflightsfares deal was found by Cheapflights users on 8/30. 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.
Mon 10/51:07 pm -
Nonstop3h 01m
Deal found 8/30![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 8/28. 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.
Tue 9/291:07 pm -
Nonstop3h 01m
Deal found 8/28![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 8/28. 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.
Wed 11/189:10 am -
1 stop10h 44m
Deal found 8/28![Frontier logo]()
$96
This Super.com deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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.
Fri 10/21:07 pm -
Nonstop3h 01m
Deal found 8/26![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 8/28. 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.
Wed 9/3010:44 pm -
1 stop12h 23m
Deal found 8/28![Frontier logo]()
$117
Find flight deals from Colorado to Washington
Keep the following information in mind while searching for Colorado to Washington flight deals. Data was last updated August 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $131 |
One-way from | $87 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $280 |
Good round-trip deal | $119 or less |
Good one-way deal | $114 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Colorado to Washington 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 31, 2026.
Use the filters below to find and compare flights from Colorado to Washington that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverSpokane
DEN Denver Intl - GEG Spokane
DENGEG
Denver Intl
Sat 10/10
6:00 am-12:18 pm
1 stop7h 18m
Spokane
Tue 10/13
3:30 pm-11:55 pm
1 stop7h 25m
$277
DenverSpokane
DEN Denver Intl - GEG Spokane
DENGEG
Denver Intl
Wed 10/28
12:31 pm-10:50 pm
1 stop11h 19m
Spokane
Sat 10/31
7:19 am-10:12 pm
1 stop13h 53m
$283
DenverSpokane
DEN Denver Intl - GEG Spokane
DENGEG
Denver Intl
Thu 11/12
8:40 am-10:15 am
Nonstop2h 35m
Spokane
Fri 11/13
6:25 am-1:35 pm
1 stop6h 10m
$283
Colorado SpringsSeattle
COS Colorado Springs - SEA Seattle/Tacoma Intl
COSSEA
Colorado Springs
Sat 9/26
6:00 am-10:01 am
1 stop5h 01m
Seattle/Tacoma Intl
Sat 10/3
5:00 am-10:44 am
1 stop4h 44m
$287
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Tue 11/10
7:03 am-9:07 am
Nonstop3h 04m
Seattle/Tacoma Intl
Tue 11/17
10:06 am-1:58 pm
Nonstop2h 52m
$287
Colorado SpringsSeattle
COS Colorado Springs - SEA Seattle/Tacoma Intl
COSSEA
Colorado Springs
Wed 10/14
6:07 pm-10:05 pm
1 stop4h 58m
Seattle/Tacoma Intl
Wed 10/21
1:30 pm-10:22 pm
1 stop7h 52m
$287
Colorado SpringsSeattle
COS Colorado Springs - SEA Seattle/Tacoma Intl
COSSEA
Colorado Springs
Wed 9/23
5:20 pm-11:30 pm
1 stop7h 10m
Seattle/Tacoma Intl
Wed 9/30
6:25 am-12:35 pm
1 stop5h 10m
$287
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Tue 11/10
3:25 pm-5:27 pm
Nonstop3h 02m
Seattle/Tacoma Intl
Sat 11/14
6:59 pm-10:38 pm
Nonstop2h 39m
$287
Colorado SpringsSeattle
COS Colorado Springs - SEA Seattle/Tacoma Intl
COSSEA
Colorado Springs
Sat 9/26
8:15 am-2:50 pm
1 stop7h 35m
Seattle/Tacoma Intl
Sat 10/3
11:22 am-5:31 pm
1 stop5h 09m
$287
Colorado SpringsSeattle
COS Colorado Springs - SEA Seattle/Tacoma Intl
COSSEA
Colorado Springs
Sat 10/24
1:29 pm-5:37 pm
1 stop5h 08m
Seattle/Tacoma Intl
Wed 10/28
3:35 pm-11:59 pm
2 stops7h 24m
$292
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Colorado to Washington
Have a flexible travel schedule? Discover the best time to fly to Washington from Colorado with our price prediction graph.
DEN-SEA
DEN-PDX
DEN-GEG
COS-SEA
DRO-SEA
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 Colorado to Washington
USCO-USWA
DEN-SEA
DEN-PDX
DEN-GEG
COS-SEA
What is the cheapest month to book a flight from Colorado to State of Washington?
Currently, January is the cheapest month in which you can book a flight from Colorado to State of Washington (average of $175). Flying from Colorado to State of Washington in July is currently the most expensive (average of $348). 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 CO to WA?
Find hourly flight availability from Colorado to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 31, 2026.
It’s optimal to fly from Colorado to State of Washington in the evening. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight at noon.
Weekly flight availability from Colorado to State of Washington
Explore weekly flight availability from Colorado to Washington. 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 31, 2026.
The most flights from USCO to USWA are scheduled on a Saturday (43 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (17 on average).
How much does it cost to fly round-trip from Colorado to State of Washington?
Airfare is below average for this route at the moment.
Colorado to State of Washington flights typically cost between $180 and $352 in November.The cheapest round-trip price found within the last 5 days was $131 on Frontier (Nov 21-Nov 30).
How far ahead should I book a flight from Colorado to State of Washington?
The best time to book flights from Colorado to State of Washington is 46 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from Colorado to State of Washington?
Use this chart to determine the cheapest time to fly round-trip from Colorado to Washington. Price data was last updated on August 29, 2026.
Travelers seeking maximum savings on their Colorado to State of Washington flight should consider departing on Sunday mornings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Washington
Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated August 31, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, andDelta from Colorado to Washington to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Overall
8.0
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Overall
8.0
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Overall
8.0
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Overall
8.0
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Overall
8.0
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Related info for your journey
Find useful and relevant information for your journey from Colorado to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Colorado to Washington
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Washington by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Colorado to Washington by cabin class
Find flights from Colorado to Washington, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Colorado and Washington flights
Browse other Colorado and Washington flight options. Last updated on August 31, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Washington
Find the right flight back to Colorado after your stay in Washington
Colorado to Washington flights
Consider these flights traveling from Colorado to Washington.
Top 7 airlines flying from Colorado to Washington
Discover the top 7 airlines that operate flights from Colorado to Washington. 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 31, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$55 | Average$182 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$85 | Average$326 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$117 | Average$402 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$117 | Average$421 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$132 | Average$436 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$133 | Average$347 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$244 | Average$456 | FlexibilityNo cancel fee | On-time71% |