$383 Cheap Flights from Seattle (BFI) to Denver (DEN)

View $383 flight on Sun, Aug 31, 2025Opens in a new window

Popular airlines from Seattle, WA (BFI-Boeing Field) to Denver Intl. Airport (DEN)

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Cheap Flights from Seattle to Denver (BFI-DEN)

Prices were available within the past 7 days and start at $383 for one-way flights and $775 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Excursions LLC
Sun, Aug 31 - Wed, Sep 3
BFI
Seattle
DEN
Denver
$775 Roundtrip, found 2 days ago
$775
Roundtrip
found 2 days ago
Select Air Excursions LLC flight, departing Sun, Aug 31 from Seattle to Denver, returning Wed, Sep 3, priced at $775 found 2 days ago
Air Excursions LLC
Mon, Aug 18 - Tue, Aug 19
BFI
Seattle
DEN
Denver
$785 Roundtrip, found 1 day ago
$785
Roundtrip
found 1 day ago
Select Air Excursions LLC flight, departing Mon, Aug 18 from Seattle to Denver, returning Tue, Aug 19, priced at $785 found 1 day ago
Air Excursions LLC
Sun, Aug 31 - Thu, Sep 4
BFI
Seattle
DEN
Denver
$795 Roundtrip, found 2 days ago
$795
Roundtrip
found 2 days ago
Select Air Excursions LLC flight, departing Sun, Aug 31 from Seattle to Denver, returning Thu, Sep 4, priced at $795 found 2 days ago
Air Excursions LLC
Mon, Aug 25 - Fri, Aug 29
BFI
Seattle
DEN
Denver
$805 Roundtrip, found 2 days ago
$805
Roundtrip
found 2 days ago
Select Air Excursions LLC flight, departing Mon, Aug 25 from Seattle to Denver, returning Fri, Aug 29, priced at $805 found 2 days ago
Air Excursions LLC
Sun, Aug 31 - Tue, Sep 2
BFI
Seattle
DEN
Denver
$815 Roundtrip, found 2 days ago
$815
Roundtrip
found 2 days ago
Select Air Excursions LLC flight, departing Sun, Aug 31 from Seattle to Denver, returning Tue, Sep 2, priced at $815 found 2 days ago
Air Excursions LLC
Mon, Aug 25 - Tue, Sep 2
BFI
Seattle
DEN
Denver
$825 Roundtrip, found 2 days ago
$825
Roundtrip
found 2 days ago
Select Air Excursions LLC flight, departing Mon, Aug 25 from Seattle to Denver, returning Tue, Sep 2, priced at $825 found 2 days ago
Air Excursions LLC
Tue, Aug 26 - Tue, Sep 2
BFI
Seattle
DEN
Denver
$835 Roundtrip, found 2 days ago
$835
Roundtrip
found 2 days ago
Select Air Excursions LLC flight, departing Tue, Aug 26 from Seattle to Denver, returning Tue, Sep 2, priced at $835 found 2 days ago
Air Excursions LLC
Sun, Aug 31 - Mon, Sep 1
BFI
Seattle
DEN
Denver
$840 Roundtrip, found 2 days ago
$840
Roundtrip
found 2 days ago
Select Air Excursions LLC flight, departing Sun, Aug 31 from Seattle to Denver, returning Mon, Sep 1, priced at $840 found 2 days ago
Air Excursions LLC
Mon, Sep 1 - Thu, Sep 4
BFI
Seattle
DEN
Denver
$845 Roundtrip, found 2 days ago
$845
Roundtrip
found 2 days ago
Select Air Excursions LLC flight, departing Mon, Sep 1 from Seattle to Denver, returning Thu, Sep 4, priced at $845 found 2 days ago
Air Excursions LLC
Sat, Aug 16 - Tue, Aug 19
BFI
Seattle
DEN
Denver
$850 Roundtrip, found 1 day ago
$850
Roundtrip
found 1 day ago
Select Air Excursions LLC flight, departing Sat, Aug 16 from Seattle to Denver, returning Tue, Aug 19, priced at $850 found 1 day ago
Flights from Seattle (BFI) to Denver (DEN)
Origin airport
Boeing Field
Destination airport
Denver Intl.
Roundtrip price
$775
Distance
1024 mi

Seattle to Denver Flights

The cheapest times to fly from Seattle to Denver

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 Seattle to Denver are during the month of August. You can find some of the cheapest flights from Seattle to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Denver

Sunday is one of the best days to book for cheap flights from Seattle to Denver: 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 Seattle to Denver

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 Seattle to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $383 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 Seattle to Denver 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 Seattle to Denver 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.

 

Frequently asked questions

How much does a flight from Boeing Field Airport (BFI) to Denver Intl. Airport (DEN) cost?
Discover the latest flight deals from BFI to DEN by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BFI to DEN?
The cheapest flights from BFI to DEN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Boeing Field Airport (BFI) to Denver Intl. Airport (DEN)?
Although Seattle, WA (BFI-Boeing Field) doesn't offer any direct flights to Denver Intl. Airport (DEN), other airports have nonstop routes. Traveling from Seattle - Tacoma Intl. Airport (SEA) will get you to Denver without any detours.
What is the cheapest airline that flies from BFI to DEN?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BFI to DEN. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Boeing Field Airport (BFI) to Denver Intl. Airport (DEN)?
Nonstop flights from Boeing Field Airport (BFI) to Denver Intl. Airport (DEN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BFI to DEN?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on various factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boeing Field Airport (BFI) to Denver Intl. Airport (DEN)?
To avoid potential delays on the Boeing Field Airport (BFI) to Denver Intl. Airport (DEN) route, aim to fly before 3 PM. Departures after this time are 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 Boeing Field Airport (BFI) to Denver Intl. Airport (DEN) last-minute?
Last-minute fares from BFI to DEN are usually more expensive. To secure the lowest prices, start looking for flights well ahead of time. That being said, if you're flexible with your travel dates, you may find a cheap fare right before your trip.
Is it cheaper to book a BFI to DEN flight and hotel package?
You can save money by securing a BFI to DEN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. After choosing your preferred flights and accommodations, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Boeing Field Airport (BFI) to Denver Intl. Airport (DEN)?
In most cases, you're able to cancel or reschedule your BFI to DEN flight. However, there may be additional fees, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you need more details, go to our Customer Service portal.

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*Available to One Key members.