Cheap Flights from Colorado Springs (COS) to Seattle (BFI)

Popular airlines from Colorado Springs Airport (COS) to Seattle, WA (BFI-Boeing Field)

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Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $392
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $392

Frequently asked questions

How much does a flight from Colorado Springs Airport (COS) to Boeing Field Airport (BFI) cost?
Grab a cheap one-way flight or cheap return flight from Colorado Springs Airport (COS) to Boeing Field Airport (BFI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Colorado Springs Airport (COS) to Boeing Field Airport (BFI)?
Planning your trip for is a great way to save, as it's the cheapest month for flights between COS and BFI. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Colorado Springs Airport (COS) to Boeing Field Airport (BFI)?
To find the cheapest airline that'll fly you from COS to BFI, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Colorado Springs Airport (COS) to Boeing Field Airport (BFI)?
You'll have to take a flight with a layover if you're traveling from Colorado Springs Airport (COS) to Boeing Field Airport (BFI). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from COS to BFI?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Colorado Springs Airport (COS) to Boeing Field Airport (BFI)?
Choose a flight from Colorado Springs Airport (COS) to Boeing Field Airport (BFI) that leaves before 3 PM to reduce the risk of cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Colorado Springs Airport (COS) to Boeing Field Airport (BFI) last-minute?
Booking your ticket from COS to BFI just before your trip is typically more expensive. But if there's some wiggle room with your schedule, you could score a cheap last-minute fare.
Is it cheaper to book a COS to BFI flight and hotel package?
You'll generally save money by booking a COS to BFI flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've chosen your ideal accommodations and flights, consider adding extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Colorado Springs Airport (COS) to Boeing Field Airport (BFI)?
If you reserved your COS to BFI flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

Travel information

Origin airport
Colorado Springs
Destination airport
Boeing Field
Distance
1069 mi

Book with confidence

Colorado Springs to Seattle Flights

The cheapest times to fly from Colorado Springs to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Colorado Springs to Seattle are during the month of . You can find some of the cheapest flights from Colorado Springs to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Colorado Springs to Seattle

Sunday is one of the best days to book for cheap flights from Colorado Springs to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Colorado Springs to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Colorado Springs to Seattle in 2026. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Colorado Springs to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Colorado Springs to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Colorado Springs to Seattle Flights

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*Available to One Key members.