How popular is this Seattle to Fort Collins flight route?

Within the past month, 193 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 $29. Users have also found prices from $58 and $59 on Delta and United Airlines, respectively.

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.

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).

What are the cheapest flights from Seattle to Fort Collins?

The cheapest flight price from Seattle to Fort Collins is $114. On average you can expect to pay $626. The most popular route, (Seattle/Tacoma Intl - Denver Intl), can usually be booked for $136.

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 American Airlines (100%), SWISS (100%) and Alaska Airlines (83%).

What are the most popular airlines that fly from Seattle to Fort Collins?

Consider Frontier, Alaska Airlines or Delta when booking your flight. These represent the most popular airlines when flying from Seattle to Fort Collins.

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 12 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.

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.

Find Cheap Flights from Seattle to Fort Collins

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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

Find flight deals from Seattle to Fort Collins

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	June
Cheapest in	January
Average price	$276

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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Highest demand for flights based on searches. 16% potential increase in price ($50 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Cheapflights Insights

Everything you need to know about your flight from Seattle to Fort Collins

What is the cheapest time of day to fly from SEA to FC9?

It’s typically best to fly out from Seattle to Fort Collins in the evening. Doing so could potentially save you 33% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Seattle to Fort Collins?

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. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Fort Collins

Read through reviews of airlines operating flights from Seattle to Fort Collins, such as Alaska Airlines,Southwest, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

7.9

Good

13,135 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Alaska Airlines

7.9

Good

13,135 reviews

Alaska Airlines

7.9

Good

13,135 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Southwest

7.9

Good

4,221 reviews

Alaska Airlines

7.9

Good

13,135 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Delta

7.8

Good

8,696 reviews

Alaska Airlines

7.9

Good

13,135 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

United Airlines

7.3

Good

10,459 reviews

Alaska Airlines

7.9

Good

13,135 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Frontier

5.5

Fair

2,517 reviews

Alaska Airlines

7.9

Good

13,135 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Related info for your journey

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 12 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, 193 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 $29. Users have also found prices from $58 and $59 on Delta and United 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 American Airlines (100%), SWISS (100%) and Alaska Airlines (83%).
What are the cheapest flights from Seattle to Fort Collins?
The cheapest flight price from Seattle to Fort Collins is $114. On average you can expect to pay $626. The most popular route, (Seattle/Tacoma Intl - Denver Intl), can usually be booked for $136.
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.

See more FAQs

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Top 6 airlines flying from Seattle to Fort Collins

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$56	Average$205	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$97	Average$286	FlexibilityNo cancel fee	On-timeN/A
Alaska Airlines	Cheapest$119	Average$317	FlexibilityNo cancel fee	On-time75%
Southwest	Cheapest$130	Average$349	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$141	Average$344	FlexibilityNo cancel fee	On-time69%
JetBlue	Cheapest$143	Average$313	FlexibilityNo cancel fee	On-time62%

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

Find cheap flights from Seattle to Fort Collins with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Seattle to Fort Collins

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Cheapflights Insights

What is the cheapest time of day to fly from SEA to FC9?

It’s typically best to fly out from Seattle to Fort Collins in the evening. Doing so could potentially save you 33% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Seattle to Fort Collins?

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. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Fort Collins

Read through reviews of airlines operating flights from Seattle to Fort Collins, such as Alaska Airlines,Southwest, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

How popular is this Seattle to Fort Collins flight route?

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

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

What are the cheapest flights from Seattle to Fort Collins?

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

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

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

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

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Complete your trip

Complete your trip to Fort Collins by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Seattle to Fort Collins by cabin class

Find flights from Seattle to Fort Collins, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Seattle and Fort Collins flights

Browse other Seattle and Fort Collins flight options. Last updated on October 30, 2026.

Other flights from Seattle

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Top 6 airlines flying from Seattle to Fort Collins

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