A waterfall, a river, and ruins of an old structure.

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

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Seattle to Sioux Falls Flights

The cheapest times to fly from Seattle to Sioux Falls

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

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

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

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 Sioux Falls 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 Seattle to Sioux Falls 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 Sioux Falls 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 Sioux Falls Regional Airport (FSD) cost?

Snag a cheap one-way flight or cheap return flight from Boeing Field Airport (BFI) to Sioux Falls Regional Airport (FSD) 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 Boeing Field Airport (BFI) to Sioux Falls Regional Airport (FSD)?

is the cheapest month to fly from BFI to FSD. Traveling during an off-peak travel window is often the key to landing a great deal.

What is the cheapest airline that flies from Boeing Field Airport (BFI) to Sioux Falls Regional Airport (FSD)?

To find the cheapest airline that'll fly you from BFI to FSD, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.

How many flights per day from Boeing Field Airport (BFI) to Sioux Falls Regional Airport (FSD)?

There aren't any daily nonstop flights departing from Boeing Field Airport (BFI) to Sioux Falls Regional Airport (FSD). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way before you know it.

What day of the week has the most flights from BFI to FSD?

You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.

*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 Sioux Falls Regional Airport (FSD)?

Opt for a flight from Boeing Field Airport (BFI) to Sioux Falls Regional Airport (FSD) that leaves before 3 PM to reduce the risk of cancellations. Later departures have a 22% higher chance of being canceled, on average.*

*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 Sioux Falls Regional Airport (FSD) last-minute?

Booking your plane ticket from BFI to FSD right before your journey is usually more expensive. However, if you're flexible with your departure dates and times, you could snag a cheap last-minute fare.

Is it cheaper to book a BFI to FSD flight and hotel package?

Compared with arranging hotels and flights separately, booking a BFI to FSD flight and hotel package with Expedia could lead to significant savings. Better still, managing everything in one place will take the hassle out of planning your trip. Just pick your flights and select from our wide range of stays, then customize your trip with extras like car rentals and activities.

Can I cancel or change the date of my flight from Boeing Field Airport (BFI) to Sioux Falls Regional Airport (FSD)?

It's generally possible to reschedule or cancel your BFI to FSD flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Seattle, WA
Destination airport
Sioux Falls Regional Airport
Distance
1,260 miles away
*Available to One Key members.