$87+ Cheap flights from Seattle (SEA) to Colorado
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 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Nov 29 — Dec 61
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Colorado 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 Seattle to ColoradoExplore the most affordable flight options available from Seattle to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
Explore the most affordable flight options available from Seattle to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 10/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/41:32 pm -
1 stop24h 42m
Sun 12/610:29 pm -
1 stop22h 22m
Deal found 10/26![Frontier logo]()
$160
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:58 pm -
Nonstop2h 50m
Mon 12/76:20 am -
1 stop6h 56m
Deal found 10/28![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 12/24:58 pm -
Nonstop2h 48m
Mon 12/76:20 am -
1 stop6h 56m
Deal found 10/28![Frontier logo]()
$162
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:27 pm -
Nonstop2h 48m
Sat 11/216:42 am -
1 stop6h 55m
Deal found 10/28![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Sat 12/54:58 pm -
Nonstop2h 50m
Sun 12/131:46 pm -
1 stop7h 18m
Deal found 10/28![Frontier logo]()
$164
This Super.com deal was found by Cheapflights users on 10/28. 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.
Wed 11/184:27 pm -
Nonstop2h 48m
Wed 12/21:32 pm -
Nonstop3h 08m
Deal found 10/28![Frontier logo]()
$165
This Cheapflightsfares deal was found by Cheapflights users on 10/27. 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 11/204:37 pm -
Nonstop2h 48m
Wed 11/251:14 pm -
Nonstop3h 08m
Deal found 10/27![Frontier logo]()
$166
This Cheapflightsfares deal was found by Cheapflights users on 10/29. 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.
Wed 12/94:58 pm -
Nonstop2h 50m
Tue 12/2210:44 pm -
1 stop19h 26m
Deal found 10/29![Frontier logo]()
$167
This Expedia deal was found by Cheapflights users on 10/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:27 pm -
Nonstop2h 48m
Tue 11/241:14 pm -
Nonstop3h 08m
Deal found 10/27![Frontier logo]()
$168
This FlightHub deal was found by Cheapflights users on 10/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/204:37 pm -
Nonstop2h 48m
Thu 11/261:14 pm -
Nonstop3h 08m
Deal found 10/26![Frontier logo]()
$170
This deal was found by Cheapflights users on 10/28. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/164:27 pm -
Nonstop2h 48m
Fri 11/201:14 pm -
Nonstop3h 08m
Deal found 10/28![Frontier logo]()
$171
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 12/31:35 pm -
1 stop4h 40m
Sat 12/58:30 am -
2 stops11h 00m
Deal found 10/25![Southwest logo]()
$272
Best flights from Seattle to ColoradoDiscover carefully curated flight deals from Seattle to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
Discover carefully curated flight deals from Seattle to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
This Delta deal was found by Cheapflights users on 10/26. 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 12/88:30 am -
Nonstop2h 52m
Sat 12/126:00 am -
Nonstop3h 18m
Deal found 10/26![Delta logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
Tue 12/810:09 am -
Nonstop2h 44m
Sat 12/127:40 am -
1 stop6h 25m
Deal found 10/27![Alaska Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 10/27. 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.
Wed 12/26:10 am -
Nonstop2h 35m
Sat 12/512:30 pm -
2 stops8h 40m
Deal found 10/27![Southwest logo]()
$242
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Thu 11/268:30 am -
1 stop4h 50m
Thu 12/39:24 am -
2 stops7h 58m
Deal found 10/29![United Airlines logo]()
$303
This Alaska Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Mon 12/147:25 am -
Nonstop2h 45m
Tue 12/153:22 pm -
Nonstop3h 09m
Deal found 10/25![Alaska Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 10/27. 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.
Wed 12/96:30 am -
2 stops9h 55m
Tue 12/226:35 pm -
1 stop8h 10m
Deal found 10/27![Southwest logo]()
$267
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 2/257:40 pm -
Nonstop2h 48m
Sun 2/286:30 pm -
Nonstop3h 11m
Deal found 10/25![Delta logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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.
Wed 12/167:38 am -
1 stop5h 46m
Tue 12/299:42 pm -
Nonstop3h 07m
Deal found 10/26![Alaska Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 10/26. 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 1/2011:25 am -
2 stops8h 35m
Mon 1/259:00 am -
Nonstop3h 15m
Deal found 10/26![Southwest logo]()
$282
This Delta deal was found by Cheapflights users on 10/29. 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.
Thu 11/2611:30 am -
1 stop4h 58m
Thu 12/38:02 am -
1 stop7h 41m
Deal found 10/29![Delta logo]()
$287
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/185:05 am -
1 stop6h 20m
Thu 11/197:00 am -
2 stops10h 27m
Deal found 10/25![United Airlines logo]()
$326
This Alaska Airlines deal was found by Cheapflights users on 10/29. 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 11/192:13 pm -
1 stop6h 13m
Sun 11/228:00 pm -
1 stop14h 29m
Deal found 10/29![Alaska Airlines logo]()
$275
This Delta deal was found by Cheapflights users on 10/28. 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 12/99:18 am -
1 stop7h 05m
Mon 12/148:02 am -
1 stop5h 34m
Deal found 10/28![Delta logo]()
$287
This Southwest deal was found by Cheapflights users on 10/26. 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.
Thu 11/199:25 am -
1 stop5h 10m
Thu 11/2610:45 am -
2 stops9h 00m
Deal found 10/26![Southwest logo]()
$292
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
Thu 2/2511:05 pm -
1 stop10h 34m
Sun 2/2812:49 pm -
Nonstop3h 01m
Deal found 10/27![Alaska Airlines logo]()
$287
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Fri 11/205:05 am -
1 stop6h 40m
Wed 12/27:00 am -
2 stops10h 22m
Deal found 10/29![United Airlines logo]()
$364
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/1711:30 am -
1 stop4h 58m
Wed 12/28:02 am -
1 stop5h 34m
Deal found 10/25![Delta logo]()
$327
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Fri 11/133:49 pm -
1 stop4h 57m
Thu 12/37:00 am -
2 stops10h 12m
Deal found 10/29![United Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/189:25 am -
1 stop8h 50m
Thu 11/198:40 am -
1 stop10h 10m
Deal found 10/25![Southwest logo]()
$360
This United Airlines deal was found by Cheapflights users on 10/29. 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 11/145:05 am -
1 stop6h 40m
Wed 11/186:14 pm -
1 stop6h 01m
Deal found 10/29![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 10/27. 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.
Fri 12/45:30 am -
1 stop6h 06m
Fri 12/111:11 pm -
1 stop6h 36m
Deal found 10/27![Delta logo]()
$359
This Southwest deal was found by Cheapflights users on 10/28. 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.
Sun 2/216:30 am -
2 stops9h 05m
Sat 2/275:55 pm -
1 stop6h 05m
Deal found 10/28![Southwest logo]()
$387
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:49 pm -
1 stop5h 10m
Sun 11/155:30 am -
1 stop5h 17m
Deal found 10/27![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 10/26. 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.
Wed 1/275:35 am -
1 stop5h 57m
Tue 2/21:11 pm -
1 stop4h 25m
Deal found 10/26![Delta logo]()
$359
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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 1/228:40 pm -
1 stop20h 06m
Mon 1/256:26 pm -
1 stop16h 00m
Deal found 10/26![Alaska Airlines logo]()
$397
This Delta deal was found by Cheapflights users on 10/29. 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.
Fri 11/205:35 am -
1 stop6h 04m
Wed 12/21:11 pm -
1 stop4h 44m
Deal found 10/29![Delta logo]()
$359
This Southwest deal was found by Cheapflights users on 10/26. 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 12/98:05 am -
2 stops10h 10m
Wed 12/3012:25 pm -
2 stops10h 00m
Deal found 10/26![Southwest logo]()
$413
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Fri 11/133:49 pm -
1 stop7h 10m
Tue 11/175:05 pm -
1 stop5h 14m
Deal found 10/29![United Airlines logo]()
$429
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 2/155:30 am -
1 stop10h 05m
Fri 2/1910:20 am -
2 stops10h 00m
Deal found 10/25![Southwest logo]()
$422
This Delta deal was found by Cheapflights users on 10/28. 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.
Fri 11/135:35 am -
1 stop6h 04m
Mon 11/161:16 pm -
2 stops11h 37m
Deal found 10/28![Delta logo]()
$394
Last-minute flights from Seattle to ColoradoDiscover last-minute flight deals from Seattle to Colorado. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Colorado. Data last updated October 30, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 11/47:48 pm -
1 stop18h 23m
Mon 11/161:04 pm -
Nonstop3h 08m
Deal found 10/27![Frontier logo]()
$215
This Frontier deal was found by Cheapflights users on 10/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:48 pm -
1 stop12h 57m
Wed 11/181:04 pm -
Nonstop3h 08m
Deal found 10/27![Frontier logo]()
$219
This deal was found by Cheapflights users on 10/27. 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 11/74:27 pm -
Nonstop2h 48m
Mon 11/91:04 pm -
Nonstop3h 08m
Deal found 10/27![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Sat 11/77:48 pm -
1 stop12h 57m
Wed 11/181:04 pm -
Nonstop3h 08m
Deal found 10/27![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Sat 11/77:48 pm -
1 stop12h 57m
Thu 11/1912:54 pm -
1 stop6h 39m
Deal found 10/28![Frontier logo]()
$225
This Cheapflightsfares deal was found by Cheapflights users on 10/27. 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.
Sat 11/77:48 pm -
1 stop21h 15m
Mon 11/1610:55 pm -
1 stop20h 38m
Deal found 10/27![Frontier logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Mon 11/94:27 pm -
Nonstop2h 48m
Wed 11/181:04 pm -
Nonstop3h 08m
Deal found 10/27![Frontier logo]()
$231
This eDestinos deal was found by Cheapflights users on 10/28. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/94:27 pm -
Nonstop2h 48m
Mon 11/161:04 pm -
Nonstop3h 08m
Deal found 10/28![Frontier logo]()
$239
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/175:05 am -
1 stop4h 28m
Wed 12/21:40 pm -
2 stops9h 18m
Deal found 10/25![United Airlines logo]()
$302
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:20 pm -
2 stops10h 39m
Thu 11/265:30 am -
1 stop5h 17m
Deal found 10/27![United Airlines logo]()
$292
This Delta deal was found by Cheapflights users on 10/27. 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.
Thu 11/1912:31 pm -
2 stops8h 51m
Thu 11/268:14 am -
2 stops9h 37m
Deal found 10/27![Delta logo]()
$298
This Delta deal was found by Cheapflights users on 10/29. 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.
Thu 11/2611:30 am -
1 stop4h 58m
Thu 12/38:02 am -
1 stop7h 41m
Deal found 10/29![Delta logo]()
$287
One-way flights from Seattle to ColoradoSearch for one-way flight options from Seattle to Colorado. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
Search for one-way flight options from Seattle to Colorado. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This Super.com deal was found by Cheapflights users on 10/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/204:37 pm -
Nonstop2h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$87
This Cheapflightsfares deal was found by Cheapflights users on 10/27. 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.
Thu 12/31:32 pm -
1 stop24h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$88
This Super.com deal was found by Cheapflights users on 10/28. 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 11/197:48 pm -
1 stop18h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Fri 12/251:37 pm -
Nonstop2h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$91
This Super.com deal was found by Cheapflights users on 10/28. 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.
Fri 11/274:37 pm -
Nonstop2h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$96
This Super.com deal was found by Cheapflights users on 10/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/211:52 pm -
1 stop18h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$98
This Super.com deal was found by Cheapflights users on 10/28. 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.
Tue 1/511:53 am -
1 stop5h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$99
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/910:29 am -
1 stop7h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$100
This Jetabroad deal was found by Cheapflights users on 10/27. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/254:37 pm -
Nonstop2h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$101
This Cheapflightsfares deal was found by Cheapflights users on 10/29. 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.
Fri 2/124:29 pm -
Nonstop2h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 12/226:25 pm -
1 stop14h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$103
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Wed 11/183:49 pm -
1 stop7h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![United Airlines logo]()
$144
Find flight deals from Seattle to Colorado
Keep the following information in mind while searching for Seattle to Colorado flight deals. Data was last updated October 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $160 (Cheapflightsfares) |
One-way from | $87 (Super.com) |
Popular in | June |
Cheapest in | January |
Average price | $276 |
Good round-trip deal | $310 or less |
Good one-way deal | $188 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle 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 7,457,451 searches. Data last updated October 30, 2026.
Use the filters below to find and compare flights from Seattle to Colorado that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Tue 12/15
4:04 pm-7:45 pm
Nonstop2h 41m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$114
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Tue 12/22
7:57 pm-11:46 pm
Nonstop2h 49m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$129
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Fri 11/27
2:13 pm-5:53 pm
Nonstop2h 40m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$139
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Fri 2/12
7:40 pm-11:28 pm
Nonstop2h 48m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$139
Quickest round-trip
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Sun 12/6
5:05 am-8:42 am
Nonstop2h 37m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$139
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Fri 12/18
7:59 pm-11:48 pm
Nonstop2h 49m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$139
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Thu 12/3
8:30 am-12:22 pm
Nonstop2h 52m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$139
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Wed 1/6
7:00 am-4:15 pm
2 stops8h 15m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$144
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Wed 1/20
7:35 am-5:05 pm
2 stops8h 30m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$144
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Sat 2/6
5:50 am-4:00 pm
2 stops9h 10m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$144
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Seattle to Colorado
Have a flexible travel schedule? Discover the best time to fly to Colorado from Seattle with our price prediction graph.
SEA-DEN
SEA-COS
SEA-HDN
SEA-GJT
SEA-DRO
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 Seattle to Colorado
SEA-USCO
SEA-DEN
SEA-COS
SEA-HDN
SEA-GJT
What is the cheapest month to book a flight from Seattle to Colorado?
Currently, January is the cheapest month in which you can book a flight from Seattle to Colorado (average of $198). Flying from Seattle to Colorado in June is currently the most expensive (average of $349). 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 SEA to CO?
Find hourly flight availability from Seattle 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 October 30, 2026.
A simple way to save on the total cost of your ticket is to fly from Seattle to Colorado in the evening. If you’re flexible enough to do this you can expect to save up to 29% on your trip compared to booking a flight in the morning.
How much does it cost to fly round-trip from Seattle to Colorado?
Airfare is below average for this route at the moment.
Seattle to Colorado flights typically cost between $178 and $346 in December.The cheapest round-trip price found within the last 5 days was $160 on Frontier (Dec 4-Dec 6).
How far ahead should I book a flight from Seattle to Colorado?
The price you pay for your flight from Seattle to Colorado may vary depending on when you book. For the best chance of a lower fare, look to book 73 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from Seattle to Colorado?
Use this chart to determine the cheapest time to fly round-trip from Seattle to Colorado. Price data was last updated on October 24, 2026.
Travelers seeking maximum savings on their Seattle to Colorado flight should consider departing on Saturday at noon when fares are most often at their lowest. Tuesday mornings 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 October 30, 2026.
See what other customers who have flown with Alaska Airlines,Southwest, andDelta from Seattle to Colorado have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Related info for your journey
Find useful and relevant information for your journey from Seattle to Colorado. 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 Seattle 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 Seattle to Colorado by cabin class
Find flights from Seattle to Colorado, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Colorado flights
Browse other Seattle and Colorado flight options. Last updated on October 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Seattle to Colorado flights
Consider these flights traveling from Seattle to Colorado.
Top 7 airlines flying from Seattle to Colorado
Discover the top 7 airlines that operate flights from Seattle 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 7,457,451 searches. Data last updated October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$56 | Average$205 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$97 | Average$301 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$119 | Average$377 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$130 | Average$371 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$139 | Average$465 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$143 | Average$313 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$338 | Average$506 | FlexibilityNo cancel fee | On-time71% |