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Fort Collins

$79+ Cheap flights from Seattle (SEA) to Fort Collins, CO

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Fort Collins are usually found in September or October, booked 79 days in advance, depart on a Friday or Saturday and return on a Friday

Cheap 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 April 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$136
(Cheapflightsfares)

One-way from

$79
(Southwest)

Popular in

December

Cheapest in

September

Average price

$215
Provider with most accurate pricing for Seattle/Tacoma Intl-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Denver Intl flights.
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From Seattle/Tacoma Intl to Fort Collins
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One-way flight from Seattle/Tacoma Intl to Fort Collins
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Highest demand for flights based on searches. 4% potential increase in price ($9 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Seattle to Fort Collins

Cheapest flights from Seattle to Fort Collins
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 April 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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 6/106:25 amSEA - DEN
Nonstop2h 47mFrontier
Sat 6/149:36 pmDEN - SEA
Nonstop3h 08mFrontier
Deal found 4/17$136
This Travelocity deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/176:00 amSEA - DEN
Nonstop2h 51mMultiple Airlines
Tue 5/206:00 amDEN - SEA
Nonstop2h 59mMultiple Airlines
Deal found 4/16$153
This Southwest deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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 5/175:10 amSEA - DEN
Nonstop2h 40mSouthwest
Sat 5/178:45 pmDEN - SEA
Nonstop3h 00mSouthwest
Deal found 4/17$157
This Hawaiian Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/168:23 pmSEA - DEN
Nonstop2h 42mHawaiian Airlines
Tue 5/206:00 amDEN - SEA
Nonstop2h 59mHawaiian Airlines
Deal found 4/16$177
This Alaska Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 6/711:20 amSEA - DEN
1 stop5h 49mAlaska Airlines
Sat 6/146:00 amDEN - SEA
Nonstop3h 01mAlaska Airlines
Deal found 4/16$207
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 8/86:00 pmSEA - DEN
Nonstop2h 41mDelta
Sun 8/246:15 amDEN - SEA
Nonstop3h 01mDelta
Deal found 4/16$227
This American Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/102:40 pmSEA - DEN
1 stop7h 29mAmerican Airlines
Sat 6/1412:14 pmDEN - SEA
1 stop9h 02mAmerican Airlines
Deal found 4/17$274
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 5/162:40 pmSEA - DEN
1 stop7h 04mUnited Airlines
Tue 5/205:20 amDEN - SEA
1 stop7h 29mUnited Airlines
Deal found 4/16$302

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 2,558,603 searches. Data last updated April 17, 2025.
Use the filters below to find and compare flights from Seattle to Fort Collins that are best for you.

Fly from

Seattle

Fly to

Fort Collins

Route

Depart

Return

Price

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 5/6

6:00 am-9:51 am

Nonstop2h 51m

Denver Intl

Wed 5/7

9:43 pm-11:49 pm

Nonstop3h 06m

$135

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 5/17

6:00 am-9:51 am

Nonstop2h 51m

Denver Intl

Tue 5/20

6:00 am-7:59 am

Nonstop2h 59m

$153

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 5/17

5:10 am-8:50 am

Nonstop2h 40m

Denver Intl

Sat 5/17

8:45 pm-10:45 pm

Nonstop3h 00m

$157

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sun 5/18

7:10 am-11:00 am

Nonstop2h 50m

Denver Intl

Tue 5/20

6:45 pm-8:43 pm

Nonstop2h 58m

$177

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 5/20

5:15 am-8:58 am

Nonstop2h 43m

Denver Intl

Fri 5/23

6:00 am-8:01 am

Nonstop3h 01m

$187

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 5/7

12:59 pm-9:15 pm

1 stop7h 16m

Denver Intl

Tue 5/13

8:20 am-12:29 pm

1 stop5h 09m

$229

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 5/21

8:23 pm-12:05 am

Nonstop2h 42m

Denver Intl

Mon 5/26

6:00 am-7:59 am

Nonstop2h 59m

$232

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 6/10

2:40 pm-11:09 pm

1 stop7h 29m

Denver Intl

Sat 6/14

12:14 pm-8:16 pm

1 stop9h 02m

$274

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 6/27

7:15 pm-4:07 pm

1 stop19h 52m

Denver Intl

Sun 6/29

6:15 am-8:02 am

1 stop26h 47m

$323

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 5/21

5:00 am-8:40 am

Nonstop2h 40m

$79

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 18 results
1
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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.
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

How far ahead should I book a flight from Seattle to Fort Collins?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Fort Collins. Price data was last updated on April 11, 2025.

The best time to book flights from Seattle to Fort Collins is 79 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 month to book a flight from Seattle to Fort Collins?

Currently, October is the cheapest month in which you can book a flight from Seattle to Fort Collins (average of $197). Flying from Seattle to Fort Collins in March is currently the most expensive (average of $278). 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 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 April 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Fort Collins as you normally would.

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 December 16, 2024.

Travelers seeking maximum savings on their Seattle to Fort Collins flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 April 17, 2025.

The most flights from SEA to FC9 are scheduled on a Thursday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).

Rainfall in Fort Collins by month

Plan your trip to Fort Collins by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Fort Collins ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Fort Collins when rainfall is around 0.5 in.

Temperature in Fort Collins by month

Plan your trip to Fort Collins by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Fort Collins, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 April 17, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Seattle to Fort Collins have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
9,882 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Hawaiian Airlines
7.9
Good
2,382 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

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.

  • What airport do you fly from for flights from Seattle to Fort Collins?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Fort Collins. On average, Seattle/Tacoma Intl has 22 outbound flights to Fort Collins per day from 6 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • How popular is this Seattle to Fort Collins flight route?

    Within the past month, 287 users have taken a look at flights from Seattle/Tacoma Intl to Fort Collins.

  • What are the cheapest airlines to fly from Seattle to Fort Collins one-way?

    For one-way options, check prices for Southwest. According to our data, you can fly for as low as $79. Users have also found prices from $84 and $86 on United Airlines and Frontier, respectively.

  • What are the most reliable airlines from Seattle to Fort Collins?

    The top 3 most reliable airlines when flying from Seattle to Fort Collins are Air France (94%), Aeromexico (92%) and KLM (92%).

  • What are the cheapest flights from Seattle to Fort Collins?

    The cheapest flight price from Seattle to Fort Collins is $79. On average you can expect to pay $644. The most popular route, (Seattle/Tacoma Intl - Denver Intl), can usually be booked for $145.

  • Can I find deals for flights from Seattle to Fort Collins that include hotel bookings?

    Yes. In addition to deals on Seattle to Fort Collins flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Fort Collins?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Fort Collins.

  • Can I find deals for business class flights from Seattle to Fort Collins?

    Yes. Cheapflights offers flight deals from Seattle to Fort Collins by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Fort Collins?

    Currently, October is the cheapest month in which you can book a flight from Seattle to Fort Collins (average of $197). Flying from Seattle to Fort Collins in March is currently the most expensive (average of $278). 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.

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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 2,558,603 searches. Data last updated April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$56Average$143FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$98Average$219FlexibilityNo cancel feeOn-time85%
DeltaCheapest$102Average$245FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$118Average$234FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$147Average$282FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$148Average$378FlexibilityNo cancel feeOn-time69%

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