$75+ Cheap flights from Seattle (SEA) to Fort Collins, CO
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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Oct 13 — Oct 201
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Fort Collins with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Fort Collins are usually found in January or February, booked 74 days in advance, depart on a Friday or Thursday and return on a Friday
Cheap flight deals from Seattle to Fort Collins
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to Fort CollinsExplore the most affordable flight options available from Seattle to Fort Collins. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2026.
Explore the most affordable flight options available from Seattle to Fort Collins. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:27 pm -
Nonstop2h 48m
Tue 11/310:55 pm -
1 stop20h 59m
Deal found 9/12![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 11/24:27 pm -
Nonstop2h 48m
Sat 11/71:04 pm -
Nonstop3h 08m
Deal found 9/8![Frontier logo]()
$134
This Justfly.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:09 pm -
1 stop12h 36m
Mon 11/91:04 pm -
Nonstop3h 08m
Deal found 9/8![Frontier logo]()
$135
This Super.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/44:27 pm -
Nonstop2h 54m
Tue 10/61:07 pm -
Nonstop3h 01m
Deal found 9/8![Frontier logo]()
$136
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/164:27 pm -
Nonstop2h 50m
Fri 10/2312:00 pm -
Nonstop2h 59m
Deal found 9/9![Multiple Airlines logo]()
$137
This Cheapflightsfares deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/164:27 pm -
Nonstop2h 50m
Mon 10/191:07 pm -
Nonstop3h 05m
Deal found 9/8![Frontier logo]()
$138
This CheapOair deal was found by Cheapflights users on 9/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:27 pm -
Nonstop2h 50m
Sat 10/171:07 pm -
Nonstop3h 05m
Deal found 9/9![Frontier logo]()
$139
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:27 pm -
Nonstop2h 54m
Sat 10/1010:45 pm -
1 stop11h 13m
Deal found 9/10![Frontier logo]()
$140
This Cheapflightsfares deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 11/38:09 pm -
1 stop12h 36m
Sat 11/71:04 pm -
Nonstop3h 08m
Deal found 9/8![Frontier logo]()
$142
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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.
Fri 10/94:27 pm -
Nonstop2h 50m
Fri 10/169:01 am -
1 stop12h 10m
Deal found 9/11![Frontier logo]()
$143
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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.
Fri 10/94:27 pm -
Nonstop2h 50m
Sat 10/171:10 pm -
1 stop6h 35m
Deal found 9/11![Frontier logo]()
$144
Best flights from Seattle to Fort CollinsDiscover carefully curated flight deals from Seattle to Fort Collins that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 13, 2026.
Discover carefully curated flight deals from Seattle to Fort Collins that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 13, 2026.
This Delta deal was found by Cheapflights users on 9/10. 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 10/148:00 pm -
Nonstop2h 55m
Sun 10/186:00 am -
Nonstop3h 10m
Deal found 9/10![Delta logo]()
$157
This Southwest deal was found by Cheapflights users on 9/9. 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.
Thu 10/157:40 am -
2 stops9h 05m
Mon 10/197:55 pm -
1 stop6h 05m
Deal found 9/9![Southwest logo]()
$292
This Delta deal was found by Cheapflights users on 9/10. 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 2/177:40 pm -
Nonstop2h 48m
Sat 2/206:45 am -
Nonstop3h 14m
Deal found 9/10![Delta logo]()
$157
This Delta deal was found by Cheapflights users on 9/9. 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.
Fri 10/211:59 pm -
1 stop9h 06m
Mon 10/56:00 am -
Nonstop2h 59m
Deal found 9/9![Delta logo]()
$167
This Delta deal was found by Cheapflights users on 9/10. 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.
Tue 11/38:00 pm -
Nonstop2h 55m
Tue 11/105:35 am -
1 stop4h 37m
Deal found 9/10![Delta logo]()
$167
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:40 am -
2 stops9h 55m
Tue 10/65:20 pm -
1 stop5h 25m
Deal found 9/8![Southwest logo]()
$308
This Southwest deal was found by Cheapflights users on 9/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:40 am -
2 stops9h 05m
Mon 10/268:55 am -
2 stops7h 25m
Deal found 9/10![Southwest logo]()
$308
This Southwest deal was found by Cheapflights users on 9/9. 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.
Tue 10/207:30 am -
2 stops8h 30m
Sat 10/248:45 am -
2 stops7h 50m
Deal found 9/9![Southwest logo]()
$317
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 9/307:10 am -
1 stop7h 00m
Thu 10/151:45 pm -
2 stops8h 15m
Deal found 9/8![Southwest logo]()
$317
This Southwest deal was found by Cheapflights users on 9/9. 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.
Thu 10/12:10 pm -
Nonstop2h 45m
Sun 10/48:30 am -
Nonstop3h 00m
Deal found 9/9![Southwest logo]()
$318
This Southwest deal was found by Cheapflights users on 9/12. 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 11/127:30 am -
2 stops9h 25m
Mon 11/161:55 pm -
1 stop8h 00m
Deal found 9/12![Southwest logo]()
$322
This Southwest deal was found by Cheapflights users on 9/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/115:00 am -
2 stops8h 35m
Mon 2/156:30 pm -
2 stops7h 25m
Deal found 9/11![Southwest logo]()
$327
Last-minute flights from Seattle to Fort CollinsDiscover last-minute flight deals from Seattle to Fort Collins. Data last updated September 13, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Fort Collins. Data last updated September 13, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:27 pm -
Nonstop2h 54m
Sat 10/1010:45 pm -
1 stop11h 13m
Deal found 9/10![Frontier logo]()
$140
This Super.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/44:27 pm -
Nonstop2h 54m
Tue 10/61:07 pm -
Nonstop3h 01m
Deal found 9/8![Frontier logo]()
$136
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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.
Fri 10/94:27 pm -
Nonstop2h 50m
Fri 10/169:01 am -
1 stop12h 10m
Deal found 9/11![Frontier logo]()
$143
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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.
Fri 10/94:27 pm -
Nonstop2h 50m
Sat 10/171:10 pm -
1 stop6h 35m
Deal found 9/11![Frontier logo]()
$144
This CheapOair deal was found by Cheapflights users on 9/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:27 pm -
Nonstop2h 50m
Sat 10/171:07 pm -
Nonstop3h 05m
Deal found 9/9![Frontier logo]()
$139
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/164:27 pm -
Nonstop2h 50m
Fri 10/2312:00 pm -
Nonstop2h 59m
Deal found 9/9![Multiple Airlines logo]()
$137
This Cheapflightsfares deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/164:27 pm -
Nonstop2h 50m
Mon 10/191:07 pm -
Nonstop3h 05m
Deal found 9/8![Frontier logo]()
$138
This Expedia deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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.
Fri 10/164:27 pm -
Nonstop2h 50m
Tue 10/201:07 pm -
Nonstop3h 05m
Deal found 9/8![Frontier logo]()
$142
This Cheapflightsfares deal was found by Cheapflights users on 9/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/194:27 pm -
Nonstop2h 50m
Thu 10/227:31 am -
1 stop27h 17m
Deal found 9/12![Frontier logo]()
$145
This Cheapflightsfares deal was found by Cheapflights users on 9/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:27 pm -
Nonstop2h 50m
Sun 10/251:07 pm -
Nonstop3h 05m
Deal found 9/12![Frontier logo]()
$146
This Cheapflightsfares deal was found by Cheapflights users on 9/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:27 pm -
Nonstop2h 48m
Tue 11/310:55 pm -
1 stop20h 59m
Deal found 9/12![Frontier logo]()
$130
One-way flights from Seattle to Fort CollinsSearch for one-way flight options from Seattle to Fort Collins. Find affordable one-way fares based on user searches. Data last updated September 13, 2026.
Search for one-way flight options from Seattle to Fort Collins. Find affordable one-way fares based on user searches. Data last updated September 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 11/210:50 am -
1 stop21h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$75
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:59 pm -
Nonstop2h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Alaska Airlines logo]()
$77
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/101:16 pm -
Nonstop2h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Alaska Airlines logo]()
$79
This Super.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/54:27 pm -
Nonstop2h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$80
This Booking.com deal was found by Cheapflights users on 9/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/14:27 pm -
Nonstop2h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$81
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 11/412:20 pm -
1 stop8h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Wed 10/77:25 pm -
1 stop13h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$85
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Mon 10/2610:53 am -
1 stop21h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/307:25 pm -
1 stop21h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 12/26:49 pm -
1 stop13h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$88
This Southwest deal was found by Cheapflights users on 9/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:25 am -
1 stop8h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Southwest logo]()
$89
Find flight deals from Seattle to Fort Collins
Keep the following information in mind while searching for Seattle to Fort Collins flight deals. Data was last updated September 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $130 (Cheapflightsfares) |
One-way from | $75 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $276 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Fort Collins 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 September 13, 2026.
Use the filters below to find and compare flights from Seattle to Fort Collins 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
Mon 11/23
8:30 am-12:17 pm
Nonstop2h 47m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$79
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Sun 10/4
8:55 am-12:45 pm
Nonstop2h 50m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$79
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Wed 3/10
5:45 am-11:55 am
1 stop5h 10m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$89
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Sun 3/7
5:45 am-11:55 am
1 stop5h 10m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$89
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Mon 12/14
6:00 am-4:02 pm
1 stop9h 02m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$89
Quickest round-trip
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Thu 11/5
7:04 pm-10:45 pm
Nonstop2h 41m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$149
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Tue 3/2
5:00 am-12:35 pm
1 stop6h 35m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$154
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Wed 3/10
3:30 pm-12:43 am
1 stop8h 13m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$154
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Wed 10/14
8:00 pm-11:55 pm
Nonstop2h 55m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$154
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Wed 10/14
8:00 pm-11:55 pm
Nonstop2h 55m
Denver Intl
Sun 10/18
6:00 am-8:10 am
Nonstop3h 10m
$157
Showing 1-10 of 22 resultsSorted by cheapest first
Best time to book a flight from Seattle to Fort Collins
Have a flexible travel schedule? Discover the best time to fly to Fort Collins from Seattle with our price prediction graph.
SEA-DEN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Fort Collins
SEA-FC9
SEA-DEN
What is the cheapest time of day to fly from SEA to FC9?
Find hourly flight availability from Seattle to Fort Collins. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 13, 2026.
It’s typically best to fly out from Seattle to Fort Collins in the evening. Doing so could potentially save you 31% on the flight price compared to flying in the morning, which is usually more expensive.
Weekly flight availability from Seattle to Fort Collins
Explore weekly flight availability from Seattle to Fort Collins. 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 September 13, 2026.
The most flights from SEA to FC9 are scheduled on a Friday (38 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (13 on average).
How much does it cost to fly round-trip from Seattle to Fort Collins?
Airfare is below average for this route at the moment.
Seattle to Fort Collins flights typically cost between $182 and $347 in October.The cheapest round-trip price found within the last 5 days was $130 on Frontier (Oct 31-Nov 3).
What is the cheapest day to fly from Seattle to Fort Collins?
Use this chart to determine the cheapest time to fly round-trip from Seattle to Fort Collins. Price data was last updated on September 12, 2026.
Travelers seeking maximum savings on their Seattle to Fort Collins flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Fort Collins
Get insights into the airlines that provide service to Fort Collins. 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 Fort Collins. Reviews last updated September 13, 2026.
Read through reviews of airlines operating flights from Seattle to Fort Collins, such as Southwest,Alaska Airlines, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Seattle to Fort Collins. 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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Top 6 airlines flying from Seattle to Fort Collins
Discover the top 6 airlines that operate flights from Seattle to Fort Collins. 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 September 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$55 | Average$195 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$96 | Average$275 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$114 | Average$332 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$117 | Average$313 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$138 | Average$330 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$200 | Average$328 | FlexibilityNo cancel fee | On-time62% |