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$117+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FSD
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
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 January or June, booked 53 days in advance, depart on a Saturday or Tuesday and return on a Tuesday

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 July 1, 2025.

Round-trip from

$200
(Priceline)

One-way from

$117
(Priceline)

Popular in

December

Cheapest in

January

Average price

$481
From Seattle/Tacoma Intl to Sioux Falls Joe Foss Field
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One-way flight from Seattle/Tacoma Intl to Sioux Falls Joe Foss Field
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Highest demand for flights based on searches. 1% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 1, 2025.

This Priceline deal was found by Cheapflights users on 7/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/306:25 amSEA - FSD
1 stop10h 29mFrontier
Wed 8/67:48 pmFSD - SEA
1 stop5h 54mFrontier
Deal found 7/1$200
This Delta deal was found by Cheapflights users on 6/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/266:10 amSEA - FSD
1 stop5h 40mDelta
Tue 9/210:59 amFSD - SEA
1 stop7h 44mDelta
Deal found 6/30$269
This United Airlines deal was found by Cheapflights users on 7/1. 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 9/31:05 pmSEA - FSD
2 stops8h 35mUnited Airlines
Mon 9/85:06 pmFSD - SEA
1 stop7h 53mUnited Airlines
Deal found 7/1$299
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Mon 8/2512:46 amSEA - FSD
1 stop9h 31mAmerican Airlines
Tue 9/22:35 pmFSD - SEA
1 stop7h 59mAmerican Airlines
Deal found 6/30$329
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2212:59 amSEA - FSD
1 stop8h 50mAlaska Airlines
Sat 8/3012:19 pmFSD - SEA
1 stop9h 58mAlaska Airlines
Deal found 7/1$399

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 July 1, 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

Wed 7/30

6:25 am-6:54 pm

1 stop10h 29m

Sioux Falls Joe Foss Field

Wed 8/6

7:48 pm-11:42 pm

1 stop5h 54m

$200

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Tue 8/26

6:10 am-1:50 pm

1 stop5h 40m

Sioux Falls Joe Foss Field

Tue 9/2

10:59 am-4:43 pm

1 stop7h 44m

$269

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 9/3

1:05 pm-11:40 pm

2 stops8h 35m

Sioux Falls Joe Foss Field

Mon 9/8

5:06 pm-10:59 pm

1 stop7h 53m

$299

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Mon 8/25

12:46 am-12:17 pm

1 stop9h 31m

Sioux Falls Joe Foss Field

Tue 9/2

2:35 pm-8:34 pm

1 stop7h 59m

$329

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Fri 8/22

12:59 am-11:49 am

1 stop8h 50m

Sioux Falls Joe Foss Field

Sat 8/30

12:19 pm-8:17 pm

1 stop9h 58m

$399

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Mon 8/25

6:17 am-1:23 pm

1 stop5h 06m

$117

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Mon 7/14

12:20 am-10:50 am

1 stop8h 30m

$281

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sun 8/24

12:58 am-12:58 pm

1 stop10h 00m

$295

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sun 7/6

3:58 pm-8:49 pm

2 stops26h 51m

$550

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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 June 27, 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 53 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, September is the cheapest month in which you can book a flight from Seattle to Sioux Falls (average of $334). Flying from Seattle to Sioux Falls in December is currently the most expensive (average of $446). 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 July 1, 2025.

It’s typically best to fly out from Seattle to Sioux Falls in the evening. Doing so could potentially save you 55% 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 July 1, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,974 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,858 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Frontier
5.9
Fair
3,289 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

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.

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

    Currently priced at $200, 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 United Airlines - these airlines can fly you to your destination from $269 and $299, respectively. Users have found that Frontier is 59% cheaper than the other options available to this destination.

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

    $117 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $281 and $295, 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, September is the cheapest month in which you can book a flight from Seattle to Sioux Falls (average of $334). Flying from Seattle to Sioux Falls in December is currently the most expensive (average of $446). 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

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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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$339FlexibilityNo cancel feeOn-time62%
DeltaCheapest$268Average$503FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$430FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$353Average$606FlexibilityNo cancel feeOn-time69%

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