HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Fort Collins

$56+ 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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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.

The best prices from Seattle/Tacoma Intl to Fort Collins are usually found in January or March, booked 69 days in advance, depart on a Wednesday or Tuesday and return on a Saturday

Cheap flight deals from Seattle to Fort Collins

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Fort Collins (FC9). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2024.

Round-trip from

$97
(Cheapflightsfares)

One-way from

$56
(Mytrip)

Popular in

December

Cheapest in

January

Average price

$256
From Seattle/Tacoma Intl to Fort Collins
Search Deals
One-way flight from Seattle/Tacoma Intl to Fort Collins
Search Deals
High demand for flights, 9% potential price rise
Search Deals
Best time to find cheap flights, 4% potential price drop
Search Deals
Average for round-trip flights in December 2024
Search Deals

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 December 18, 2024.

This Cheapflightsfares deal was found by Cheapflights users on 12/17. 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.
Wed 12/259:36 pmSEA - DEN
Nonstop2h 45mFrontier
Tue 12/319:45 amDEN - SEA
1 stop8h 06mFrontier
Deal found 12/17$161
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/275:00 amSEA - DEN
Nonstop2h 43mUnited Airlines
Tue 1/77:50 amDEN - SEA
Nonstop3h 09mUnited Airlines
Deal found 12/17$287
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/297:25 amSEA - DEN
Nonstop2h 50mDelta
Tue 1/77:50 pmDEN - SEA
Nonstop3h 17mDelta
Deal found 12/17$288
This Alaska Airlines deal was found by Cheapflights users on 12/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/237:45 pmSEA - DEN
Nonstop2h 44mAlaska Airlines
Tue 1/77:00 amDEN - SEA
Nonstop3h 19mAlaska Airlines
Deal found 12/17$297
This Booking.com deal was found by Cheapflights users on 12/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/179:36 pmSEA - DEN
Nonstop2h 45mMultiple Airlines
Thu 12/197:35 pmDEN - SEA
1 stop16h 53mMultiple Airlines
Deal found 12/16$343
This Southwest deal was found by Cheapflights users on 12/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/171:00 pmSEA - DEN
2 stops7h 40mSouthwest
Thu 12/192:55 pmDEN - SEA
1 stop5h 50mSouthwest
Deal found 12/16$401

Find flights from Seattle to Fort Collins within your budget

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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sun 1/12

3:17 pm-7:01 pm

Nonstop2h 44m

Denver Intl

Thu 1/16

1:30 pm-3:35 pm

Nonstop3h 05m

$97

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Mon 2/3

3:15 pm-6:57 pm

Nonstop2h 42m

Denver Intl

Sun 2/9

1:10 pm-3:23 pm

Nonstop3h 13m

$139

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sun 1/19

7:30 am-11:15 am

Nonstop2h 45m

Denver Intl

Fri 1/24

8:40 pm-10:40 pm

Nonstop3h 00m

$140

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 1/8

9:00 am-12:43 pm

Nonstop2h 43m

Denver Intl

Sun 1/12

6:00 am-11:20 am

1 stop6h 20m

$144

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 2/1

6:59 pm-10:36 pm

Nonstop2h 37m

Denver Intl

Sat 2/8

10:15 pm-2:18 pm

1 stop17h 03m

$145

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 2/1

6:59 pm-10:36 pm

Nonstop2h 37m

Denver Intl

Sat 2/8

12:04 pm-2:17 pm

Nonstop3h 13m

$167

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 1/25

6:10 am-3:19 pm

1 stop8h 09m

Denver Intl

Wed 1/29

7:45 am-2:02 pm

1 stop7h 17m

$231

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Mon 2/10

5:16 pm-1:24 am

1 stop7h 08m

$56

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 1/7

8:15 am-12:10 pm

Nonstop2h 55m

$70

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 2/25

8:50 am-12:36 pm

Nonstop2h 46m

$79

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 15 results
1
2

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.

Travel insights for flights from Seattle to Fort Collins

Get recent, data-driven insights about flights from Seattle to Fort Collins including ideal travel times, pricing trends, and more.

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 December 13, 2024.

The best time to book flights from Seattle to Fort Collins is 69 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 $271). 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 December 18, 2024.

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 Tuesday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 18, 2024.
See what other customers who have flown with Frontier, Alaska Airlines 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.
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,552 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,059 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 8 outbound flights to Fort Collins per day from 5 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, 330 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 Frontier. According to our data, you can fly for as low as $56. Users have also found prices from $70 and $79 on Delta and Alaska Airlines, 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 United Airlines (95%), Japan Airlines (92%) and ANA (91%).

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

    The cheapest flight price from Seattle to Fort Collins is $68. On average you can expect to pay $742. The most popular route, (Seattle/Tacoma Intl - Denver Intl), can usually be booked for $95.

  • 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 $271). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Fort Collins

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Denver flights
Portland to Denver flights
Spokane to Denver flights
Seattle to Aspen flights
Seattle to Colorado Springs flights
Seattle to Grand Junction flights
Pasco to Denver flights
Everett to Denver flights
Seattle to Vail flights
Seattle to Hayden flights
Seattle to Durango flights
Seattle to Gunnison flights
Portland to Aspen flights
Portland to Grand Junction flights
Portland to Colorado Springs flights
Portland to Montrose flights
Portland to Durango flights
Portland to Vail flights
Spokane to Colorado Springs flights
Portland to Hayden flights
Pasco to Colorado Springs flights
Bellingham to Denver flights
Spokane to Grand Junction flights
Seattle to Montrose flights
Portland to Gunnison flights
Yakima to Denver flights
Spokane to Durango flights
Pullman to Denver flights
Walla Walla to Denver flights
Spokane to Montrose flights
Bellingham to Colorado Springs flights
Pullman to Grand Junction flights
Spokane to Aspen flights

Top 5 airlines flying from Seattle to Fort Collins

Discover the top 5 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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$53Average$129FlexibilityNo cancel feeOn-time62%
DeltaCheapest$87Average$236FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$117Average$274FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$118Average$204FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$127Average$370FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.