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

£201 Cheap Flights from Seattle (SEA) to Sioux Falls (FSD)

View £201 flight on Wed, 19 Aug 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Sioux Falls Regional Airport (FSD)

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

Prices were available within the past 7 days and start at £201 for one-way flights and £661 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, 27 Aug - Mon, 31 Aug
SEA
Seattle
FSD
Sioux Falls
£661 Return, found 1 day ago
£661
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 27 Aug from Seattle to Sioux Falls, returning Mon, 31 Aug, priced at £661 found 1 day ago

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sioux Falls, SD (FSD-Sioux Falls Regional) cost?
You can find one-way and return flights from SEA to FSD with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when SEA to FSD ticket fares go up or down.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
The cheapest months to fly from SEA to FSD are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
Enter SEA to FSD and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
American Airlines is one of the cheapest airlines offering connecting return flights from Seattle - Tacoma Intl. (SEA) to Sioux Falls Regional (FSD), with tickets starting from around £292 for flights that can be booked for departure within the next year. These prices are per adult for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Seattle, WA (SEA) to Sioux Falls, SD (FSD)?
To find a cheap flight from Seattle, WA (SEA) to Sioux Falls, SD (FSD), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to Sioux Falls Regional (FSD) typically departs around 12:05 AM local time, operated by American Airlines. This is a seasonal service, active in February and March. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
There are no nonstop flights from Seattle - Tacoma Intl. (SEA) to Sioux Falls Regional (FSD), which is a distance of about 2,028 kilometers. If you're flying with one stop, your journey will typically take around 9 hours. Flights with two or more stops usually take longer, averaging about 11 hours 18 minutes. Keep in mind that these times are averages and can vary based on your specific routing and layover durations.
Can you fly business or first class from Seattle, WA (SEA) to Sioux Falls, SD (FSD)?
Select the "Business class" and "First class" filters when looking for Seattle, WA (SEA) to Sioux Falls, SD (FSD) flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sioux Falls, SD (FSD-Sioux Falls Regional) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sioux Falls, SD (FSD-Sioux Falls Regional) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Sioux Falls, SD (FSD) from Seattle, WA (SEA)?
If you're planning to travel to Sioux Falls from Seattle - Tacoma Intl. (SEA), you can fly directly into Sioux Falls Regional (FSD). Some flights may connect through major hubs like San Francisco Intl. (SFO), Portland Intl. (PDX), or San Diego Intl. (SAN) before reaching Sioux Falls. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sioux Falls, SD (FSD-Sioux Falls Regional) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sioux Falls, SD (FSD-Sioux Falls Regional) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sioux Falls, SD (FSD-Sioux Falls Regional) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sioux Falls, SD (FSD-Sioux Falls Regional) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA) to Sioux Falls, SD (FSD)?
If you booked your Seattle, WA (SEA) to Sioux Falls, SD (FSD) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Sioux Falls Regional
Airlines serving
Alaska Airlines
Return price
£660
Distance
2016 km

Book with confidence

Compare flights from Seattle to Sioux Falls easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Seattle to Sioux Falls. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Sioux Falls Regional in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Seattle - Tacoma Intl. to Sioux Falls Regional.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Seattle - Tacoma Intl. (SEA) to Sioux Falls Regional (FSD)

The easiest way to view the best deals on flights from Seattle to Sioux Falls today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Seattle - Tacoma Intl. to Sioux Falls Regional start at just £661 and range up to £661.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Seattle and Sioux Falls
  • booking your flight during August, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Seattle to Sioux Falls flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Seattle - Tacoma Intl. to Sioux Falls Regional for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Seattle to Sioux Falls easily and book with confidence

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