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Sioux Falls

$289+ Cheap flights from Seattle to Sioux Falls (SEA - FSD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FSD
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
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 January 21, 2026.

This American Airlines deal was found by Cheapflights users on 1/20. 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 4/251:29 pm
SEA
-
FSD
1 stop7h 36m
American Airlines
Thu 4/301:46 pm
FSD
-
SEA
1 stop7h 46m
American Airlines
Deal found 1/20$289
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/63:35 pm
SEA
-
FSD
1 stop5h 29m
Delta
Wed 2/115:00 am
FSD
-
SEA
1 stop7h 55m
Delta
Deal found 1/20$314
This United Airlines deal was found by Cheapflights users on 1/20. 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 4/253:48 pm
SEA
-
FSD
1 stop5h 56m
United Airlines
Thu 4/306:00 am
FSD
-
SEA
2 stops10h 36m
United Airlines
Deal found 1/20$331
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Wed 2/47:35 am
SEA
-
FSD
1 stop7h 24m
American Airlines
Sun 2/86:00 am
FSD
-
SEA
1 stop8h 01m
American Airlines
Deal found 1/20$339
This United Airlines deal was found by Cheapflights users on 1/20. 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 3/1110:55 am
SEA
-
FSD
1 stop9h 07m
United Airlines
Wed 3/189:00 am
FSD
-
SEA
2 stops11h 40m
United Airlines
Deal found 1/20$374
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Mon 5/412:59 am
SEA
-
FSD
1 stop10h 02m
American Airlines
Mon 5/117:44 pm
FSD
-
SEA
1 stop16h 10m
American Airlines
Deal found 1/21$376
This American Airlines deal was found by Cheapflights users on 1/21. 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 14m
American Airlines
Sat 4/2512:12 pm
FSD
-
SEA
1 stop13h 27m
American Airlines
Deal found 1/21$385
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Tue 4/712:59 am
SEA
-
FSD
1 stop10h 02m
American Airlines
Sat 4/113:21 pm
FSD
-
SEA
1 stop10h 18m
American Airlines
Deal found 1/21$397
This United Airlines deal was found by Cheapflights users on 1/19. 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 2/285:00 am
SEA
-
FSD
1 stop5h 55m
United Airlines
Wed 3/49:00 am
FSD
-
SEA
2 stops14h 01m
United Airlines
Deal found 1/19$399
This United Airlines deal was found by Cheapflights users on 1/20. 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 2/49:25 am
SEA
-
FSD
2 stops12h 19m
United Airlines
Sun 2/86:00 am
FSD
-
SEA
1 stop5h 55m
United Airlines
Deal found 1/20$417
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:29 am
SEA
-
FSD
1 stop9h 13m
Alaska Airlines
Sat 4/253:21 pm
FSD
-
SEA
1 stop10h 08m
Alaska Airlines
Deal found 1/20$419

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 January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$289
(American Airlines)

Popular in

April

Cheapest in

October

Average price

$479
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
Highest demand for flights based on searches. 17% potential increase in price ($92 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 January 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 January 21, 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

Sat 4/25

1:29 pm-11:05 pm

1 stop7h 36m

Sioux Falls Joe Foss Field

Thu 4/30

1:46 pm-7:32 pm

1 stop7h 46m

$289

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Fri 2/6

3:35 pm-11:04 pm

1 stop5h 29m

Sioux Falls Joe Foss Field

Wed 2/11

5:00 am-10:55 am

1 stop7h 55m

$314

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

5:21 pm-12:55 am

1 stop9h 34m

$314

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sat 4/25

3:48 pm-11:44 pm

1 stop5h 56m

Sioux Falls Joe Foss Field

Thu 4/30

6:00 am-2:36 pm

2 stops10h 36m

$331

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 2/4

7:35 am-4:59 pm

1 stop7h 24m

Sioux Falls Joe Foss Field

Sun 2/8

6:00 am-12:01 pm

1 stop8h 01m

$339

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Mon 5/4

12:59 am-1:01 pm

1 stop10h 02m

Sioux Falls Joe Foss Field

Mon 5/11

7:44 pm-9:54 am

1 stop16h 10m

$376

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Fri 4/24

7:00 am-7:14 pm

1 stop10h 14m

Sioux Falls Joe Foss Field

Sat 4/25

12:12 pm-11:39 pm

1 stop13h 27m

$385

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Tue 4/7

12:59 am-1:01 pm

1 stop10h 02m

Sioux Falls Joe Foss Field

Sat 4/11

3:21 pm-11:39 pm

1 stop10h 18m

$397

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

$405

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Expedia the most. Expedia 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 16, 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 $163). 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.

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 January 21, 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
8,087 reviews

Boarding

8.1

Entertainment

7.8

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.2

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
8,087 reviews
Delta
7.9
Good
8,087 reviews

Boarding

8.1

Entertainment

7.8

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.2

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
9,188 reviews
Delta
7.9
Good
8,087 reviews

Boarding

8.1

Entertainment

7.8

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.2

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
11,169 reviews
Delta
7.9
Good
8,087 reviews

Boarding

8.1

Entertainment

7.8

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.2

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
3,055 reviews
Delta
7.9
Good
8,087 reviews

Boarding

8.1

Entertainment

7.8

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.2

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 Delta can get you from Seattle to Sioux Falls in just under 5h 29m. Your travel time can differ by up to 2h 07m. 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 $268, respectively. Users have found that Frontier is 55% 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 $142, 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 $163). 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$188Average$360FlexibilityNo cancel feeOn-time62%
DeltaCheapest$268Average$443FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$366FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$286Average$496FlexibilityNo cancel feeOn-time69%

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