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$104+ Cheap flights from Sioux Falls to Seattle (FSD - SEA)

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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — SEA
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Cheap flight deals from Sioux Falls to Seattle

Cheapest flights from Sioux Falls to Seattle
Explore the most affordable flight options available from Sioux Falls to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/288:56 pm
FSD
-
SEA
1 stop14h 23m
Multiple Airlines
Wed 9/28:53 pm
SEA
-
FSD
1 stop22h 19m
Multiple Airlines
Deal found 7/20$236
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:31 pm
FSD
-
SEA
1 stop6h 56m
Multiple Airlines
Wed 9/309:16 pm
SEA
-
FSD
1 stop12h 00m
Multiple Airlines
Deal found 7/21$264
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:08 pm
FSD
-
SEA
1 stop14h 56m
Frontier
Thu 8/137:06 pm
SEA
-
FSD
1 stop22h 17m
Frontier
Deal found 7/20$269
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/2612:28 pm
FSD
-
SEA
2 stops23h 32m
Multiple Airlines
Wed 9/309:16 pm
SEA
-
FSD
1 stop12h 00m
Multiple Airlines
Deal found 7/22$281
This CheapOair deal was found by Cheapflights users on 7/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:56 pm
FSD
-
SEA
1 stop14h 23m
Frontier
Mon 9/147:00 am
SEA
-
FSD
1 stop9h 36m
Frontier
Deal found 7/20$285
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/178:08 pm
FSD
-
SEA
1 stop15h 11m
Multiple Airlines
Wed 8/2610:34 am
SEA
-
FSD
2 stops32h 36m
Multiple Airlines
Deal found 7/23$294
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3010:00 pm
FSD
-
SEA
1 stop14h 39m
Multiple Airlines
Wed 9/28:53 pm
SEA
-
FSD
1 stop22h 19m
Multiple Airlines
Deal found 7/20$311
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/178:08 pm
FSD
-
SEA
1 stop15h 11m
Frontier
Thu 8/277:06 pm
SEA
-
FSD
1 stop22h 55m
Frontier
Deal found 7/23$322

Find flight deals from Sioux Falls to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to Seattle (SEA). 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 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$236
(Kiwi.com)

One-way from

$104
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$540
Provider with most accurate pricing for Sioux Falls Joe Foss Field-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Seattle/Tacoma Intl flights.
Search Deals
From Sioux Falls Joe Foss Field to Seattle/Tacoma Intl
Search Deals
One-way flight from Sioux Falls Joe Foss Field to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($99 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 July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux Falls to Seattle 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 23, 2026.
Use the filters below to find and compare flights from Sioux Falls to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Wed 9/2

1:26 pm-5:00 pm

1 stop5h 34m

Seattle/Tacoma Intl

Sun 9/6

6:05 am-3:48 pm

1 stop7h 43m

$339

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Thu 8/27

6:50 pm-11:04 pm

1 stop6h 14m

Seattle/Tacoma Intl

Tue 9/1

1:16 pm-11:44 pm

2 stops8h 28m

$424

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Wed 9/2

9:35 am-8:43 pm

2 stops13h 08m

Seattle/Tacoma Intl

Thu 9/10

1:57 pm-11:12 pm

1 stop7h 15m

$424

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Wed 9/2

9:35 am-8:43 pm

2 stops13h 08m

Seattle/Tacoma Intl

Sun 9/6

5:00 am-12:39 pm

1 stop5h 39m

$424

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Mon 8/17

9:35 am-3:52 pm

1 stop8h 17m

Seattle/Tacoma Intl

Fri 8/28

1:57 pm-11:22 pm

1 stop7h 25m

$429

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Sat 8/29

3:06 pm-10:43 pm

1 stop9h 37m

Seattle/Tacoma Intl

Tue 9/1

9:05 am-11:22 pm

2 stops12h 17m

$434
Cheapest one-way

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Sun 10/4

12:16 pm-12:27 am

2 stops38h 11m

$204

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Sun 9/6

6:00 am-4:14 pm

2 stops12h 14m

$220

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Wed 9/9

9:35 am-4:14 pm

2 stops8h 39m

$225

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Tue 9/8

10:40 am-4:45 pm

1 stop8h 05m

$268

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Compare providers for flights from Sioux Falls to Seattle

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 Sioux Falls to Seattle in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 Sioux Falls-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux Falls-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sioux Falls-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sioux Falls-Seattle 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 Sioux Falls-Seattle 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 Sioux Falls to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Sioux Falls 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 Sioux Falls to Seattle

How far ahead should I book a flight from Sioux Falls to Seattle?

The price you pay for your flight from Sioux Falls to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 34 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 Sioux Falls to Seattle?

Currently, January is the cheapest month in which you can book a flight from Sioux Falls to Seattle (average of $339). Flying from Sioux Falls to Seattle in June is currently the most expensive (average of $555). 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 Sioux Falls to Seattle?

Airfare is below average for this route at the moment.

Sioux Falls to Seattle flights typically cost between $346 and $660 in August.
The cheapest round-trip price found within the last 5 days was $236 on Multiple Airlines (Aug 28-Sep 2).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated July 23, 2026.
Read through reviews of airlines operating flights from Sioux Falls to Seattle, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,484 reviews

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Lesley,Aug 2023

LIH - SEA

It was a red eye flight . And after take off and the first service the flight attendants were no where to be found except in the galley. When I went to the bathroom, the entrance was blocked by a FA sitting and he basically exhaled loudly as he had to move his legs so I could get in. Never mind I was a comfort plus passenger and traveled to the back of the plane to go to the bathroom. I know I can go up to first class because there are no rules to prohibit me but it followed the “air” rules and was the flight attendants were rude as if I was putting them out. I will always fly delta but get your crew in check. I’m a former flight attendant and the crew is not priviledged. They are hired and paid to do a service.
Delta
7.8
Good
8,484 reviews
Delta
7.8
Good
8,484 reviews

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Lesley,Aug 2023

LIH - SEA

It was a red eye flight . And after take off and the first service the flight attendants were no where to be found except in the galley. When I went to the bathroom, the entrance was blocked by a FA sitting and he basically exhaled loudly as he had to move his legs so I could get in. Never mind I was a comfort plus passenger and traveled to the back of the plane to go to the bathroom. I know I can go up to first class because there are no rules to prohibit me but it followed the “air” rules and was the flight attendants were rude as if I was putting them out. I will always fly delta but get your crew in check. I’m a former flight attendant and the crew is not priviledged. They are hired and paid to do a service.
United Airlines
7.4
Good
10,024 reviews
Delta
7.8
Good
8,484 reviews

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Lesley,Aug 2023

LIH - SEA

It was a red eye flight . And after take off and the first service the flight attendants were no where to be found except in the galley. When I went to the bathroom, the entrance was blocked by a FA sitting and he basically exhaled loudly as he had to move his legs so I could get in. Never mind I was a comfort plus passenger and traveled to the back of the plane to go to the bathroom. I know I can go up to first class because there are no rules to prohibit me but it followed the “air” rules and was the flight attendants were rude as if I was putting them out. I will always fly delta but get your crew in check. I’m a former flight attendant and the crew is not priviledged. They are hired and paid to do a service.
American Airlines
7.1
Good
11,838 reviews
Delta
7.8
Good
8,484 reviews

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Lesley,Aug 2023

LIH - SEA

It was a red eye flight . And after take off and the first service the flight attendants were no where to be found except in the galley. When I went to the bathroom, the entrance was blocked by a FA sitting and he basically exhaled loudly as he had to move his legs so I could get in. Never mind I was a comfort plus passenger and traveled to the back of the plane to go to the bathroom. I know I can go up to first class because there are no rules to prohibit me but it followed the “air” rules and was the flight attendants were rude as if I was putting them out. I will always fly delta but get your crew in check. I’m a former flight attendant and the crew is not priviledged. They are hired and paid to do a service.
Frontier
5.6
Fair
2,772 reviews
Delta
7.8
Good
8,484 reviews

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Lesley,Aug 2023

LIH - SEA

It was a red eye flight . And after take off and the first service the flight attendants were no where to be found except in the galley. When I went to the bathroom, the entrance was blocked by a FA sitting and he basically exhaled loudly as he had to move his legs so I could get in. Never mind I was a comfort plus passenger and traveled to the back of the plane to go to the bathroom. I know I can go up to first class because there are no rules to prohibit me but it followed the “air” rules and was the flight attendants were rude as if I was putting them out. I will always fly delta but get your crew in check. I’m a former flight attendant and the crew is not priviledged. They are hired and paid to do a service.

Related info for your journey

Find useful and relevant information for your journey from Sioux Falls to Seattle. 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 Sioux Falls to Seattle?

    There are many flights that can get you from Sioux Falls to Seattle in 5h 34m. Fly via Delta or United Airlines to get the fastest option. The distance between Sioux Falls and Seattle is about 1259 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Our cheapest airline available from Sioux Falls to Seattle is Frontier. Our recent data shows that you can find tickets from as low as $156 on this airline. Additional options worth looking into are Delta and American Airlines, starting at $228 and $268 round-trip. These flights start at 64% lower than the current average price 3 months from now.

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

    $96 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $228 and $248, respectively.

  • Can I find deals for flights from Sioux Falls to Seattle that include hotel bookings?

    Yes. In addition to deals on Sioux Falls to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sioux Falls to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sioux Falls to Seattle.

  • Can I find deals for business class flights from Sioux Falls to Seattle?

    Yes. Cheapflights offers flight deals from Sioux Falls to Seattle 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 Sioux Falls to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Sioux Falls to Seattle (average of $339). Flying from Sioux Falls to Seattle in June is currently the most expensive (average of $555). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Renton
Lacey
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Centralia
Puyallup
Kent
Ellensburg
Fife
Marysville
Ocean Shores
Lakewood
Lynnwood
Issaquah

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Top 4 airlines flying from Sioux Falls to Seattle

Discover the top 4 airlines that operate flights from Sioux Falls to Seattle. 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 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$156Average$299FlexibilityNo cancel feeOn-time62%
DeltaCheapest$228Average$423FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$425FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$489FlexibilityNo cancel feeOn-time69%

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