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Sioux Falls

$127+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FSD
Sep 3 — Sep 101
Thu 9/3
Thu 9/10
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 August 4, 2026.

This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Sat 11/79:16 pm
SEA
-
FSD
1 stop14h 12m
Multiple Airlines
Fri 11/138:48 pm
FSD
-
SEA
1 stop15h 03m
Multiple Airlines
Deal found 8/3$277
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Fri 11/1310:56 pm
SEA
-
FSD
1 stop9h 36m
United Airlines
Sat 11/145:06 pm
FSD
-
SEA
1 stop6h 13m
United Airlines
Deal found 8/1$334
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Mon 8/249:29 pm
SEA
-
FSD
2 stops37h 31m
Multiple Airlines
Mon 8/318:56 pm
FSD
-
SEA
1 stop14h 23m
Multiple Airlines
Deal found 8/3$339
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Wed 9/28:48 pm
SEA
-
FSD
1 stop22h 24m
Multiple Airlines
Sun 9/1310:02 pm
FSD
-
SEA
1 stop13h 40m
Multiple Airlines
Deal found 7/31$343
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/212:44 pm
SEA
-
FSD
1 stop5h 23m
United Airlines
Wed 9/96:00 am
FSD
-
SEA
2 stops10h 24m
United Airlines
Deal found 8/3$344
This United Airlines deal was found by Cheapflights users on 8/2. 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.
Tue 10/61:56 pm
SEA
-
FSD
1 stop7h 15m
United Airlines
Sun 10/116:00 am
FSD
-
SEA
1 stop6h 01m
United Airlines
Deal found 8/2$358
This American Airlines deal was found by Cheapflights users on 7/30. 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 9/82:53 pm
SEA
-
FSD
1 stop6h 55m
American Airlines
Tue 9/1512:56 pm
FSD
-
SEA
1 stop8h 52m
American Airlines
Deal found 7/30$359
This American Airlines deal was found by Cheapflights users on 8/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/162:19 pm
SEA
-
FSD
1 stop7h 34m
American Airlines
Wed 9/232:10 pm
FSD
-
SEA
1 stop8h 19m
American Airlines
Deal found 8/2$360
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/32:37 pm
SEA
-
FSD
1 stop27h 24m
Multiple Airlines
Sun 9/1310:02 pm
FSD
-
SEA
1 stop13h 40m
Multiple Airlines
Deal found 7/31$370

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 August 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$277
(Kiwi.com)

One-way from

$127
(Kiwi.com)

Popular in

May

Cheapest in

November

Average price

$473
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. 23% potential increase in price ($154 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 August 4, 2026.
Use the filters below to find and compare flights from Seattle to Sioux Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Tue 9/1

5:00 am-12:39 pm

1 stop5h 39m

Sioux Falls Joe Foss Field

Tue 9/8

6:00 am-10:01 am

1 stop6h 01m

$374

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sun 9/13

10:53 am-8:07 pm

2 stops31h 14m

Sioux Falls Joe Foss Field

Sun 9/20

10:02 pm-9:42 am

1 stop13h 40m

$426

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Tue 9/22

3:54 pm-11:44 pm

1 stop5h 50m

Sioux Falls Joe Foss Field

Sat 9/26

5:04 pm-9:15 pm

1 stop6h 11m

$429

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Fri 9/18

1:57 pm-11:12 pm

1 stop7h 15m

Sioux Falls Joe Foss Field

Tue 9/22

1:33 pm-5:52 pm

1 stop6h 19m

$429

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Tue 9/8

11:00 pm-10:37 am

1 stop9h 37m

Sioux Falls Joe Foss Field

Tue 9/15

9:35 am-8:43 pm

2 stops13h 08m

$434

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Fri 8/21

3:54 pm-11:44 pm

1 stop5h 50m

Sioux Falls Joe Foss Field

Thu 8/27

6:50 pm-11:04 pm

1 stop6h 14m

$464

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 9/3

2:34 pm-11:44 pm

1 stop7h 10m

Sioux Falls Joe Foss Field

Sun 9/6

9:35 am-8:43 pm

2 stops13h 08m

$469
Cheapest one-way

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sun 9/13

10:53 am-8:07 pm

2 stops31h 14m

$189

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 8/27

9:29 pm-8:01 pm

2 stops20h 32m

$215

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 8/27

2:37 pm-1:59 pm

3 stops21h 22m

$236

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 17 resultsSorted by cheapest first
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 August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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

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

Currently, November is the cheapest month in which you can book a flight from Seattle to Sioux Falls (average of $286). Flying from Seattle to Sioux Falls in May is currently the most expensive (average of $689). 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?

Airfare is below average for this route at the moment.

Seattle to Sioux Falls flights typically cost between $353 and $586 in November.
The cheapest round-trip price found within the last 5 days was $277 on Multiple Airlines (Nov 7-Nov 13).

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 August 4, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican 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
7.8
Good
8,483 reviews

Entertainment

7.8

Crew

8.5

Boarding

8.1

Overall

7.8

Comfort

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,483 reviews
Delta
7.8
Good
8,483 reviews

Entertainment

7.8

Crew

8.5

Boarding

8.1

Overall

7.8

Comfort

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
10,059 reviews
Delta
7.8
Good
8,483 reviews

Entertainment

7.8

Crew

8.5

Boarding

8.1

Overall

7.8

Comfort

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,845 reviews
Delta
7.8
Good
8,483 reviews

Entertainment

7.8

Crew

8.5

Boarding

8.1

Overall

7.8

Comfort

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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?

    United Airlines can get you from Seattle to Sioux Falls in just under 5h 39m. Your travel time can differ by up to . The distance between Seattle and Sioux Falls is about 1259 mi.

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

    Currently priced at $268, American Airlines will fly you from Seattle to Sioux Falls and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Delta - these airlines can fly you to your destination from $286 and $288, respectively. Users have found that American Airlines is 45% cheaper than the other options available to this destination.

  • 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, November is the cheapest month in which you can book a flight from Seattle to Sioux Falls (average of $286). Flying from Seattle to Sioux Falls in May is currently the most expensive (average of $689). 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
Yankton

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Top 3 airlines flying from Seattle to Sioux Falls

Discover the top 3 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 August 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$423FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$286Average$547FlexibilityNo cancel feeOn-time69%
DeltaCheapest$288Average$478FlexibilityNo cancel feeOn-timeN/A

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