$97+ Cheap flights from Colorado to Washington
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEA
Nov 13 — Nov 201
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 October 14, 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 October 14, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/310:55 pm -
1 stop20h 38m
Mon 11/97:48 pm -
1 stop20h 47m
Deal found 10/13![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/71:04 pm -
Nonstop3h 08m
Mon 11/1610:50 am -
1 stop22h 01m
Deal found 10/13![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 11/512:54 pm -
1 stop6h 39m
Mon 11/910:50 am -
1 stop22h 01m
Deal found 10/10![Frontier logo]()
$163
This Mytrip deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/131:04 pm -
Nonstop3h 08m
Wed 11/187:48 pm -
1 stop12h 57m
Deal found 10/13![Frontier logo]()
$164
This Super.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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.
Wed 11/111:04 pm -
Nonstop3h 08m
Sat 11/144:27 pm -
Nonstop2h 48m
Deal found 10/13![Frontier logo]()
$165
This Cheapflightsfares deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/912:54 pm -
1 stop6h 39m
Mon 11/1610:50 am -
1 stop22h 01m
Deal found 10/13![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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 11/312:54 pm -
1 stop6h 39m
Tue 11/177:48 pm -
1 stop12h 57m
Deal found 10/12![Frontier logo]()
$167
This FlightHub deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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.
Wed 12/161:32 pm -
Nonstop3h 11m
Sat 12/196:49 pm -
1 stop13h 55m
Deal found 10/9![Frontier logo]()
$168
This Cheapflightsfares deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 11/71:04 pm -
Nonstop3h 08m
Tue 11/107:48 pm -
1 stop20h 47m
Deal found 10/10![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 11/710:55 pm -
1 stop20h 38m
Fri 11/134:27 pm -
Nonstop2h 48m
Deal found 10/9![Frontier logo]()
$170
This Cheapflightsfares deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 11/410:55 pm -
1 stop20h 38m
Mon 11/910:50 am -
1 stop22h 01m
Deal found 10/10![Frontier logo]()
$171
This Orbitz deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:04 pm -
Nonstop3h 08m
Mon 11/167:48 pm -
1 stop12h 57m
Deal found 10/12![Frontier logo]()
$172
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 October 14, 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 October 14, 2026.
This Southwest deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 12/168:40 am -
2 stops10h 55m
Wed 1/68:50 am -
2 stops9h 30m
Deal found 10/9![Southwest logo]()
$185
This Alaska Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 11/121:55 pm -
1 stop8h 40m
Mon 11/1612:26 pm -
1 stop8h 00m
Deal found 10/11![Alaska Airlines logo]()
$237
This Delta deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 12/126:00 am -
Nonstop3h 18m
Tue 12/151:55 pm -
Nonstop2h 45m
Deal found 10/13![Delta logo]()
$257
This United Airlines deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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 11/1411:15 am -
Nonstop2h 51m
Sun 11/225:10 am -
Nonstop2h 21m
Deal found 10/12![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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 10/278:55 am -
1 stop11h 10m
Sat 10/316:50 am -
2 stops9h 30m
Deal found 10/12![Southwest logo]()
$196
This American Airlines deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 stop8h 59m
Sat 1/911:26 am -
1 stop6h 11m
Deal found 10/10![American Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 12/16:00 am -
Nonstop3h 18m
Wed 12/28:30 am -
Nonstop2h 52m
Deal found 10/13![Delta logo]()
$257
This Alaska Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/193:25 pm -
Nonstop3h 02m
Thu 11/2610:13 am -
Nonstop2h 45m
Deal found 10/13![Alaska Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/68:20 am -
2 stops11h 55m
Tue 12/159:25 am -
1 stop8h 45m
Deal found 10/13![Southwest logo]()
$259
This Delta deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/236:00 am -
1 stop7h 15m
Tue 12/15:37 pm -
1 stop5h 11m
Deal found 10/13![Delta logo]()
$277
This Southwest deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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 11/58:45 am -
1 stop7h 35m
Mon 11/92:50 pm -
Nonstop2h 05m
Deal found 10/12![Southwest logo]()
$267
This Delta deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 11/57:15 am -
1 stop6h 04m
Fri 11/63:30 pm -
1 stop7h 25m
Deal found 10/9![Delta logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 11/219:55 pm -
Nonstop3h 04m
Fri 11/277:37 am -
Nonstop2h 44m
Deal found 10/11![Alaska Airlines logo]()
$307
This United Airlines deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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 11/112:55 pm -
1 stop7h 16m
Wed 11/185:00 am -
1 stop6h 21m
Deal found 10/12![United Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 11/68:50 pm -
Nonstop2h 35m
Fri 11/134:05 pm -
1 stop6h 40m
Deal found 10/9![Southwest logo]()
$267
This United Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/67:20 pm -
Nonstop2h 38m
Sun 11/85:10 am -
Nonstop2h 21m
Deal found 10/13![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 12/306:35 pm -
Nonstop3h 11m
Sat 1/98:25 am -
Nonstop2h 52m
Deal found 10/13![Delta logo]()
$282
This Alaska Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 11/207:24 am -
1 stop16h 25m
Tue 12/16:01 am -
1 stop6h 52m
Deal found 10/14![Alaska Airlines logo]()
$322
This Southwest deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/68:20 am -
2 stops11h 55m
Mon 12/148:05 am -
2 stops10h 05m
Deal found 10/13![Southwest logo]()
$268
This United Airlines deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/175:30 am -
1 stop5h 17m
Mon 11/235:05 am -
1 stop6h 40m
Deal found 10/9![United Airlines logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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.
Sun 12/209:42 pm -
Nonstop3h 07m
Sat 12/268:14 pm -
Nonstop2h 45m
Deal found 10/11![Alaska Airlines logo]()
$333
This Southwest deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 1/512:35 pm -
2 stops7h 05m
Wed 1/66:00 am -
1 stop5h 30m
Deal found 10/13![Southwest logo]()
$278
This United Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/55:30 am -
1 stop5h 17m
Sat 11/75:05 am -
1 stop6h 40m
Deal found 10/13![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 11/256:00 am -
Nonstop3h 12m
Tue 12/15:57 pm -
1 stop4h 17m
Deal found 10/10![Delta logo]()
$322
This United Airlines deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 10/241:43 pm -
1 stop4h 54m
Wed 10/286:00 am -
2 stops13h 32m
Deal found 10/9![United Airlines logo]()
$346
This Delta deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 12/36:05 pm -
1 stop7h 00m
Tue 12/812:31 pm -
2 stops8h 53m
Deal found 10/11![Delta logo]()
$336
This Alaska Airlines deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 12/167:44 pm -
Nonstop3h 03m
Wed 1/66:30 am -
1 stop9h 15m
Deal found 10/9![Alaska Airlines logo]()
$382
This United Airlines deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 10/243:12 pm -
1 stop7h 03m
Sun 11/15:05 am -
1 stop6h 40m
Deal found 10/10![United Airlines logo]()
$354
This Southwest deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 4/77:40 am -
1 stop5h 20m
Sat 4/105:50 am -
2 stops8h 05m
Deal found 10/9![Southwest logo]()
$328
This Delta deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 11/146:15 am -
1 stop6h 26m
Thu 11/195:10 am -
1 stop6h 07m
Deal found 10/9![Delta logo]()
$339
Last-minute flights from Colorado to WashingtonDiscover last-minute flight deals from Colorado to Washington. Data last updated October 14, 2026 and is based on user searches.
Discover last-minute flight deals from Colorado to Washington. Data last updated October 14, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/310:55 pm -
1 stop20h 38m
Mon 11/97:48 pm -
1 stop20h 47m
Deal found 10/13![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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 11/312:54 pm -
1 stop6h 39m
Tue 11/177:48 pm -
1 stop12h 57m
Deal found 10/12![Frontier logo]()
$167
This Cheapflightsfares deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 11/410:55 pm -
1 stop20h 38m
Mon 11/910:50 am -
1 stop22h 01m
Deal found 10/10![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 11/512:54 pm -
1 stop6h 39m
Mon 11/910:50 am -
1 stop22h 01m
Deal found 10/10![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/71:04 pm -
Nonstop3h 08m
Mon 11/1610:50 am -
1 stop22h 01m
Deal found 10/13![Frontier logo]()
$162
This Cheapflightsfares deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 11/71:04 pm -
Nonstop3h 08m
Tue 11/107:48 pm -
1 stop20h 47m
Deal found 10/10![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 11/710:55 pm -
1 stop20h 38m
Fri 11/134:27 pm -
Nonstop2h 48m
Deal found 10/9![Frontier logo]()
$170
This Cheapflightsfares deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/912:54 pm -
1 stop6h 39m
Mon 11/1610:50 am -
1 stop22h 01m
Deal found 10/13![Frontier logo]()
$166
This Super.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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.
Wed 11/111:04 pm -
Nonstop3h 08m
Sat 11/144:27 pm -
Nonstop2h 48m
Deal found 10/13![Frontier logo]()
$165
This Mytrip deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/131:04 pm -
Nonstop3h 08m
Wed 11/187:48 pm -
1 stop12h 57m
Deal found 10/13![Frontier logo]()
$164
This Orbitz deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:04 pm -
Nonstop3h 08m
Mon 11/167:48 pm -
1 stop12h 57m
Deal found 10/12![Frontier logo]()
$172
This Cheapflightsfares deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/161:04 pm -
Nonstop3h 08m
Wed 11/187:48 pm -
1 stop12h 57m
Deal found 10/13![Frontier logo]()
$168
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 October 14, 2026.
Search for one-way flight options from Colorado to Washington. Find affordable one-way fares based on user searches. Data last updated October 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 11/171:05 pm -
2 stops30h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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 12/111:46 pm -
1 stop8h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Frontier logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 11/251:14 pm -
Nonstop3h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 11/512:54 pm -
1 stop6h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Frontier logo]()
$100
This Cheapflightsfares deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 11/212:54 pm -
1 stop6h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Frontier logo]()
$101
This Cheapflightsfares deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 10/311:10 pm -
1 stop6h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 1/131:03 pm -
Nonstop3h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 1/81:03 pm -
Nonstop3h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Frontier logo]()
$105
This Super.com deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 11/161:04 pm -
Nonstop3h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Frontier logo]()
$106
This iWofly deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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.
Fri 11/139:17 am -
1 stop11h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Frontier logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 12/71:32 pm -
Nonstop3h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Frontier logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 1/710:29 pm -
1 stop11h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Multiple Airlines logo]()
$118
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 October 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $161 (Cheapflightsfares) |
One-way from | $97 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $269 |
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 October 14, 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
Fri 1/8
12:00 pm-4:51 pm
1 stop5h 51m
Spokane
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$119
DenverSpokane
DEN Denver Intl - GEG Spokane
DENGEG
Denver Intl
Wed 11/4
1:55 pm-9:45 pm
1 stop8h 50m
Spokane
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$119
DenverSpokane
DEN Denver Intl - GEG Spokane
DENGEG
Denver Intl
Thu 11/12
1:55 pm-9:35 pm
1 stop8h 40m
Spokane
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$119
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Tue 1/12
6:30 pm-8:41 pm
Nonstop3h 11m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$129
Quickest round-trip
DenverSpokane
DEN Denver Intl - GEG Spokane
DENGEG
Denver Intl
Mon 11/23
7:35 pm-9:11 pm
Nonstop2h 36m
Spokane
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$129
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Sat 11/21
6:51 pm-9:00 pm
Nonstop3h 09m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$129
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Sun 11/22
6:33 pm-8:40 pm
Nonstop3h 07m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$139
DenverSpokane
DEN Denver Intl - GEG Spokane
DENGEG
Denver Intl
Sat 11/14
6:00 am-10:19 am
1 stop5h 19m
Spokane
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$139
DenverSpokane
DEN Denver Intl - GEG Spokane
DENGEG
Denver Intl
Wed 11/4
7:15 am-12:19 pm
1 stop6h 04m
Spokane
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$139
DenverSpokane
DEN Denver Intl - GEG Spokane
DENGEG
Denver Intl
Sat 11/7
1:55 pm-9:47 pm
1 stop8h 52m
Spokane
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$139
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.
HDN-SEA
DEN-GEG
DEN-SEA
DEN-PSC
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
HDN-SEA
DEN-GEG
DEN-SEA
DEN-PSC
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 $180). 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 October 14, 2026.
It’s optimal to fly from Colorado to State of Washington in the evening. By choosing this option you can save up to 10% on the cost of your flight, compared to a flight in the afternoon.
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 October 14, 2026.
The most flights from USCO to USWA are scheduled on a Monday (42 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (9 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 $183 and $347 in November.The cheapest round-trip price found within the last 5 days was $161 on Frontier (Nov 3-Nov 9).
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 October 10, 2026.
Travelers seeking maximum savings on their Colorado to State of Washington flight should consider departing on Thursday 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 October 14, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Southwest, 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.
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.0
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.0
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.0
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.0
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.0
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.0
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
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 October 14, 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 6 airlines flying from Colorado to Washington
Discover the top 6 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 October 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$54 | Average$189 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$79 | Average$334 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$117 | Average$407 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$117 | Average$442 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$132 | Average$442 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$244 | Average$475 | FlexibilityNo cancel fee | On-time71% |