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$78+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FSD
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Sioux Falls Joe Foss Field are usually found in October or November, booked 41 days in advance, depart on a Saturday or Tuesday and return on a Tuesday

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 December 4, 2025.

This Delta deal was found by Cheapflights users on 12/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/126:00 amSEA - FSD
1 stop7h 45mDelta
Mon 12/155:14 amFSD - SEA
1 stop7h 40mDelta
Deal found 12/2$409
This Delta deal was found by Cheapflights users on 12/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/511:59 pmSEA - FSD
1 stop8h 21mDelta
Mon 12/85:14 amFSD - SEA
1 stop7h 40mDelta
Deal found 12/1$439
This United Airlines deal was found by Cheapflights users on 12/1. 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 12/55:30 amSEA - FSD
2 stops8h 51mUnited Airlines
Mon 12/83:15 pmFSD - SEA
1 stop9h 13mUnited Airlines
Deal found 12/1$444
This American Airlines deal was found by Cheapflights users on 12/2. 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 12/1710:38 amSEA - FSD
1 stop8h 26mAmerican Airlines
Sun 12/213:09 pmFSD - SEA
1 stop8h 26mAmerican Airlines
Deal found 12/2$481
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Fri 12/123:45 pmSEA - FSD
1 stop5h 58mUnited Airlines
Mon 12/153:15 pmFSD - SEA
2 stops11h 35mUnited Airlines
Deal found 12/2$494
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/127:59 pmSEA - FSD
2 stops20h 50mAlaska Airlines
Mon 12/1510:43 amFSD - SEA
2 stops13h 00mAlaska Airlines
Deal found 12/3$499
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/69:25 amSEA - FSD
2 stops8h 56mUnited Airlines
Tue 12/98:00 amFSD - SEA
1 stop10h 07mUnited Airlines
Deal found 12/2$524

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$269
(Delta)

One-way from

$78
(Kiwi.com)

Popular in

April

Cheapest in

October

Average price

$484
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.
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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. 17% potential increase in price ($87 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 December 2025
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 December 4, 2025.
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

Thu 1/8

3:35 pm-11:04 pm

1 stop5h 29m

Sioux Falls Joe Foss Field

Sat 1/10

10:50 am-2:45 pm

1 stop5h 55m

$269

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 1/8

12:25 pm-8:24 pm

1 stop5h 59m

Sioux Falls Joe Foss Field

Sat 1/10

11:22 am-6:14 pm

1 stop8h 52m

$269

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 1/8

3:30 pm-11:44 pm

1 stop6h 14m

Sioux Falls Joe Foss Field

Sun 1/11

9:00 am-1:57 pm

1 stop6h 57m

$349

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 2/5

3:30 pm-11:44 pm

1 stop6h 14m

Sioux Falls Joe Foss Field

Sat 2/7

11:22 am-9:25 pm

2 stops12h 03m

$357

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 1/8

7:25 am-11:04 pm

2 stops13h 39m

Sioux Falls Joe Foss Field

Sun 1/11

5:00 am-4:38 pm

2 stops13h 38m

$392

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 2/5

4:33 pm-5:45 pm

2 stops23h 12m

Sioux Falls Joe Foss Field

Sat 2/7

12:19 pm-10:15 pm

2 stops11h 56m

$394

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Fri 2/27

11:59 pm-10:46 am

1 stop8h 47m

Sioux Falls Joe Foss Field

Fri 3/6

6:35 pm-9:49 am

2 stops17h 14m

$457

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 12/17

10:38 am-9:04 pm

1 stop8h 26m

Sioux Falls Joe Foss Field

Sun 12/21

3:09 pm-9:35 pm

1 stop8h 26m

$481

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Fri 12/12

7:59 pm-6:49 pm

2 stops20h 50m

Sioux Falls Joe Foss Field

Mon 12/15

10:43 am-9:43 pm

2 stops13h 00m

$499

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 12/18

1:25 pm-7:55 pm

1 stop28h 30m

$248

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 17 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Sioux Falls flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 November 28, 2025.

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 41 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 $327). 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.

What is the cheapest time of day to fly from SEA to FSD?

Find hourly flight availability from Seattle to Sioux Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.

It’s typically best to fly out from Seattle to Sioux Falls in the evening. Doing so could potentially save you 54% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 December 4, 2025.
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
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

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
9,066 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

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
11,047 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

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
5.8
Fair
3,091 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

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?

    Delta and United Airlines can get you from Seattle to Sioux Falls in just under 5h 29m. Your travel time can differ by up to 30m. 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 Delta and American Airlines - these airlines can fly you to your destination from $268 and $268, 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 $144, 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 $327). 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$188Average$360FlexibilityNo cancel feeOn-time62%
DeltaCheapest$268Average$438FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$357FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$286Average$500FlexibilityNo cancel feeOn-time69%

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