Cheap Flights from Sioux Falls (FSD) to Seattle (BFI)

Popular airlines from Sioux Falls Regional Airport (FSD) to Seattle, WA (BFI-Boeing Field)

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 $304
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $304
Flights from Sioux Falls (FSD) to Seattle (BFI)
Origin airport
Sioux Falls Regional
Destination airport
Boeing Field
Distance
1260 mi

Sioux Falls to Seattle Flights

The cheapest times to fly from Sioux Falls 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 Sioux Falls to Seattle are during the month of . You can find some of the cheapest flights from Sioux Falls to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sioux Falls to Seattle

Sunday is one of the best days to book for cheap flights from Sioux Falls 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 Sioux Falls 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 Sioux Falls to Seattle in 2025. 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 Sioux Falls 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 Sioux Falls 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.

 

Frequently asked questions

How much does a flight from Sioux Falls Regional Airport (FSD) to Boeing Field Airport (BFI) cost?
Snag a cheap one-way flight or cheap return flight from Sioux Falls Regional Airport (FSD) to Boeing Field Airport (BFI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Sioux Falls Regional Airport (FSD) to Boeing Field Airport (BFI)?
The cheapest month to fly from FSD to BFI is , when demand is low. Off-peak season is usually when better flight deals are available between these airports.
What is the cheapest airline that flies from Sioux Falls Regional Airport (FSD) to Boeing Field Airport (BFI)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from FSD to BFI. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Sioux Falls Regional Airport (FSD) to Boeing Field Airport (BFI)?
Direct flights from Sioux Falls Regional Airport (FSD) to Boeing Field Airport (BFI) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from FSD to BFI?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the time of year, carrier 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 Sioux Falls Regional Airport (FSD) to Boeing Field Airport (BFI)?
To reach Boeing Field Airport (BFI) on schedule, choose a flight that takes off from Sioux Falls Regional Airport (FSD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Sioux Falls Regional Airport (FSD) to Boeing Field Airport (BFI) last-minute?
Waiting until just before your trip to book a ticket from FSD to BFI often results in higher prices. While it's possible to find some last-minute offers, there's no guarantee. Allow some flexibility in your schedule to boost your chances of landing a bargain.
Is it cheaper to book a FSD to BFI flight and hotel package?
Compared with arranging flights and hotels separately, booking a FSD to BFI flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place will take the hassle out of travel planning. Simply pick your flights and choose from our wide range of hotels, then tailor your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Sioux Falls Regional Airport (FSD) to Boeing Field Airport (BFI)?
Usually, it's possible to reschedule or cancel your FSD to BFI flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.