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Sioux Falls

$172+ Cheap flights from Seattle to Sioux Falls (SEA - FSD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FSD
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap flight deals from Seattle to Sioux Falls

Cheapest flights from Seattle to Sioux Falls
Explore the most affordable flight options available from Seattle to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/225:24 am
SEA
-
FSD
1 stop9h 11m
American Airlines
Tue 8/255:15 pm
FSD
-
SEA
1 stop8h 01m
American Airlines
Deal found 2/1$289
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/269:23 pm
SEA
-
FSD
1 stop12h 31m
Multiple Airlines
Mon 3/22:42 pm
FSD
-
SEA
2 stops29h 36m
Multiple Airlines
Deal found 2/1$290
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/113:48 pm
SEA
-
FSD
1 stop5h 56m
United Airlines
Tue 4/141:43 pm
FSD
-
SEA
2 stops11h 44m
United Airlines
Deal found 2/1$294
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:00 am
SEA
-
FSD
1 stop10h 09m
American Airlines
Sat 4/251:41 pm
FSD
-
SEA
1 stop7h 55m
American Airlines
Deal found 2/1$314
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:50 pm
SEA
-
FSD
1 stop8h 42m
United Airlines
Wed 9/911:44 am
FSD
-
SEA
2 stops8h 49m
United Airlines
Deal found 2/2$319
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:59 pm
SEA
-
FSD
1 stop8h 43m
United Airlines
Sat 4/116:00 am
FSD
-
SEA
1 stop5h 46m
United Airlines
Deal found 2/1$339
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1811:59 pm
SEA
-
FSD
1 stop8h 47m
United Airlines
Wed 2/2511:21 am
FSD
-
SEA
1 stop9h 42m
United Airlines
Deal found 2/1$355
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:55 am
SEA
-
FSD
2 stops10h 54m
United Airlines
Sat 4/116:00 am
FSD
-
SEA
1 stop5h 46m
United Airlines
Deal found 2/1$357
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1611:59 pm
SEA
-
FSD
1 stop8h 47m
United Airlines
Mon 2/235:50 am
FSD
-
SEA
1 stop5h 59m
United Airlines
Deal found 2/1$374
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/117:15 am
SEA
-
FSD
2 stops11h 25m
United Airlines
Wed 3/189:00 am
FSD
-
SEA
2 stops11h 40m
United Airlines
Deal found 2/1$379
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/265:00 am
SEA
-
FSD
1 stop5h 55m
United Airlines
Sat 2/281:40 pm
FSD
-
SEA
2 stops9h 21m
United Airlines
Deal found 2/1$383

Find flight deals from Seattle to Sioux Falls

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Sioux Falls (FSD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$289
(American Airlines)

One-way from

$172
(CheapOair)

Popular in

April

Cheapest in

October

Average price

$431
Provider with most accurate pricing for Seattle/Tacoma Intl-Sioux Falls Joe Foss Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sioux Falls Joe Foss Field flights.
Search Deals
From Seattle/Tacoma Intl to Sioux Falls Joe Foss Field
Search Deals
One-way flight from Seattle/Tacoma Intl to Sioux Falls Joe Foss Field
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Sioux Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Seattle to Sioux Falls that are best for you.

Fly from

Seattle

Fly to

Sioux Falls

Route

Depart

Return

Price

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Tue 3/10

12:07 am-11:38 am

1 stop9h 31m

Sioux Falls Joe Foss Field

Wed 3/18

6:50 am-12:47 pm

1 stop7h 57m

$289

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 2/26

3:00 pm-11:58 pm

1 stop6h 58m

Sioux Falls Joe Foss Field

Sat 2/28

5:19 pm-11:07 pm

1 stop7h 48m

$289

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sat 4/11

3:48 pm-11:44 pm

1 stop5h 56m

Sioux Falls Joe Foss Field

Tue 4/14

1:43 pm-11:27 pm

2 stops11h 44m

$294

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Tue 4/7

11:59 pm-10:42 am

1 stop8h 43m

Sioux Falls Joe Foss Field

Sat 4/11

6:00 am-9:46 am

1 stop5h 46m

$339

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 4/8

5:00 am-12:50 pm

1 stop5h 50m

Sioux Falls Joe Foss Field

Sat 4/11

6:00 am-9:46 am

1 stop5h 46m

$339

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 2/18

11:59 pm-10:46 am

1 stop8h 47m

Sioux Falls Joe Foss Field

Wed 2/25

11:21 am-7:03 pm

1 stop9h 42m

$355

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Mon 2/16

11:59 pm-10:46 am

1 stop8h 47m

Sioux Falls Joe Foss Field

Mon 2/23

5:50 am-9:49 am

1 stop5h 59m

$374

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 3/11

7:15 am-8:40 pm

2 stops11h 25m

Sioux Falls Joe Foss Field

Wed 3/18

9:00 am-6:40 pm

2 stops11h 40m

$379

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 2/26

5:00 am-12:55 pm

1 stop5h 55m

Sioux Falls Joe Foss Field

Sat 2/28

1:40 pm-9:01 pm

2 stops9h 21m

$383

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 4/2

12:42 pm-6:31 pm

1 stop27h 49m

$172

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 13 results
1
2

Compare providers for flights from Seattle to Sioux Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Sioux Falls in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Sioux Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Sioux Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Sioux Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Sioux Falls flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Sioux Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Sioux Falls

Have a flexible travel schedule? Discover the best time to fly to Sioux Falls from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Sioux Falls

How far ahead should I book a flight from Seattle to Sioux Falls?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Sioux Falls. Price data was last updated on January 30, 2026.

The price you pay for your flight from Seattle to Sioux Falls may vary depending on when you book. For the best chance of a lower fare, look to book 37 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Sioux Falls?

Currently, March is the cheapest month in which you can book a flight from Seattle to Sioux Falls (average of $167). Flying from Seattle to Sioux Falls in May is currently the most expensive (average of $325). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Seattle to Sioux Falls?

Reviews of airlines servicing Sioux Falls

Get insights into the airlines that provide service to Sioux Falls. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sioux Falls. Reviews last updated February 3, 2026.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Seattle to Sioux Falls have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,138 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,138 reviews
Delta
7.9
Good
8,138 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,236 reviews
Delta
7.9
Good
8,138 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,218 reviews
Delta
7.9
Good
8,138 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.7
Fair
3,051 reviews
Delta
7.9
Good
8,138 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Sioux Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Sioux Falls?

    American Airlines and United Airlines can get you from Seattle to Sioux Falls in just under 5h 56m. Your travel time can differ by up to 3h 35m. The distance between Seattle and Sioux Falls is about 1259 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Seattle to Sioux Falls round-trip?

    Currently priced at $188, Frontier will fly you from Seattle to Sioux Falls and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Delta - these airlines can fly you to your destination from $268 and $278, respectively. Users have found that Frontier is 56% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Seattle to Sioux Falls one-way?

    $104 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Frontier and United Airlines, with prices starting from $111 and $234, respectively.

  • Can I find deals for flights from Seattle to Sioux Falls that include hotel bookings?

    Yes. In addition to deals on Seattle to Sioux Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Sioux Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Sioux Falls.

  • Can I find deals for business class flights from Seattle to Sioux Falls?

    Yes. Cheapflights offers flight deals from Seattle to Sioux Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Sioux Falls?

    Currently, March is the cheapest month in which you can book a flight from Seattle to Sioux Falls (average of $167). Flying from Seattle to Sioux Falls in May is currently the most expensive (average of $325). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Sioux Falls?

Book flights to Sioux Falls if you plan to visit one of these locations
Marshall

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Top 4 airlines flying from Seattle to Sioux Falls

Discover the top 4 airlines that operate flights from Seattle to Sioux Falls. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$188Average$360FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$268Average$366FlexibilityNo cancel feeOn-time71%
DeltaCheapest$278Average$448FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$286Average$508FlexibilityNo cancel feeOn-time69%

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