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$139+ 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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FSD
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Sioux Falls Joe Foss Field are usually found in November or January, booked 87 days in advance, depart on a Saturday or Tuesday and return on a Tuesday

Find 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 October 30, 2025.

This Mytrip deal was found by Cheapflights users on 10/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1312:58 pmSEA - FSD
1 stop22h 44mFrontier
Mon 11/172:32 pmFSD - SEA
1 stop23h 35mFrontier
Deal found 10/29$139
This American Airlines deal was found by Cheapflights users on 10/30. 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.
Fri 12/512:38 amSEA - FSD
1 stop8h 28mAmerican Airlines
Mon 12/85:18 pmFSD - SEA
1 stop8h 20mAmerican Airlines
Deal found 10/30$269
This American Airlines deal was found by Cheapflights users on 10/28. 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.
Thu 12/183:00 pmSEA - FSD
1 stop6h 39mAmerican Airlines
Wed 1/72:25 pmFSD - SEA
1 stop8h 10mAmerican Airlines
Deal found 10/28$329
This American Airlines deal was found by Cheapflights users on 10/29. 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 11/1212:59 amSEA - FSD
1 stop7h 28mAmerican Airlines
Mon 11/175:27 pmFSD - SEA
1 stop8h 15mAmerican Airlines
Deal found 10/29$339
This United Airlines deal was found by Cheapflights users on 10/28. 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 stops12h 18mUnited Airlines
Mon 12/85:21 pmFSD - SEA
1 stop6h 25mUnited Airlines
Deal found 10/28$354
This American Airlines deal was found by Cheapflights users on 10/29. 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 11/1111:34 amSEA - FSD
1 stop7h 36mAmerican Airlines
Tue 11/184:00 pmFSD - SEA
1 stop9h 18mAmerican Airlines
Deal found 10/29$374
This United Airlines deal was found by Cheapflights users on 10/29. 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 11/118:36 amSEA - FSD
2 stops11h 10mUnited Airlines
Tue 11/185:14 pmFSD - SEA
1 stop6h 19mUnited Airlines
Deal found 10/29$379
This United Airlines deal was found by Cheapflights users on 10/29. 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 11/139:25 amSEA - FSD
2 stops12h 19mUnited Airlines
Mon 11/176:00 amFSD - SEA
2 stops9h 38mUnited Airlines
Deal found 10/29$387
This American Airlines deal was found by Cheapflights users on 10/29. 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.
Sun 11/912:59 amSEA - FSD
1 stop7h 28mAmerican Airlines
Sun 11/168:05 amFSD - SEA
1 stop8h 03mAmerican Airlines
Deal found 10/29$409
This American Airlines deal was found by Cheapflights users on 10/28. 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 10/2812:34 amSEA - FSD
1 stop9h 27mAmerican Airlines
Wed 11/56:30 amFSD - SEA
1 stop8h 40mAmerican Airlines
Deal found 10/28$419
This United Airlines deal was found by Cheapflights users on 10/28. 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 10/298:36 amSEA - FSD
2 stops11h 10mUnited Airlines
Wed 11/58:57 amFSD - SEA
1 stop6h 57mUnited Airlines
Deal found 10/28$424

Cheap 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$139
(Mytrip)

Popular in

April

Cheapest in

November

Average price

$408
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 ($94 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 30, 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 11/13

12:58 pm-1:42 pm

1 stop22h 44m

Sioux Falls Joe Foss Field

Mon 11/17

2:32 pm-12:07 pm

1 stop23h 35m

$139

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sat 12/6

9:25 am-7:40 pm

1 stop8h 15m

Sioux Falls Joe Foss Field

Mon 12/8

4:25 pm-8:35 pm

1 stop6h 10m

$269

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Fri 12/5

12:38 am-11:06 am

1 stop8h 28m

Sioux Falls Joe Foss Field

Mon 12/8

6:00 am-1:06 pm

1 stop9h 06m

$269

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sat 12/6

1:05 pm-11:43 pm

2 stops8h 38m

Sioux Falls Joe Foss Field

Mon 12/8

5:21 pm-9:46 pm

1 stop6h 25m

$354

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 11/13

9:25 am-11:44 pm

2 stops12h 19m

Sioux Falls Joe Foss Field

Mon 11/17

6:00 am-1:38 pm

2 stops9h 38m

$387

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sun 11/9

12:59 am-10:27 am

1 stop7h 28m

Sioux Falls Joe Foss Field

Sun 11/16

8:05 am-2:08 pm

1 stop8h 03m

$409

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Tue 11/11

8:36 am-9:46 pm

2 stops11h 10m

Sioux Falls Joe Foss Field

Tue 11/18

8:57 am-6:25 pm

2 stops11h 28m

$464

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Mon 11/10

12:20 am-10:28 am

1 stop8h 08m

Sioux Falls Joe Foss Field

Tue 11/18

2:35 pm-9:50 pm

1 stop9h 15m

$489

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Mon 11/10

5:05 am-12:31 pm

1 stop5h 26m

Sioux Falls Joe Foss Field

Sun 11/16

6:00 am-1:38 pm

2 stops9h 38m

$548

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 12/18

12:59 am-12:28 pm

1 stop9h 29m

$295

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 14 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 October.
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 October 24, 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 28 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 $181). 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 October 30, 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.

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 October 30, 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
7,998 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,998 reviews
Delta
7.9
Good
7,998 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,998 reviews
Delta
7.9
Good
7,998 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,035 reviews
Delta
7.9
Good
7,998 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Frontier
5.8
Fair
3,122 reviews
Delta
7.9
Good
7,998 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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?

    Frontier, Delta, and American Airlines can get you from Seattle to Sioux Falls in just under 8h 15m. Your travel time can differ by up to 14h 29m. 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 58% cheaper than the other options available to this destination.

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

    $295 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and Alaska Airlines, with prices starting from $432 and $432, 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 $181). 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$188Average$360FlexibilityNo cancel feeOn-time62%
DeltaCheapest$268Average$447FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$404FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$286Average$531FlexibilityNo cancel feeOn-time69%

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