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$171+ Cheap flights from Sioux Falls to Seattle (FSD - SEA)

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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — SEA
nov. 27 — dic. 41
jue. 11/27
jue. 12/4
1 adult, Economy
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Cheapflights Tip: The best prices from Sioux Falls Joe Foss Field to Seattle/Tacoma Intl are usually found in August or July, booked 58 days in advance, depart on a Tuesday or Saturday and return on a Saturday

Find 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 octubre 28, 2025.

This Mytrip deal was found by Cheapflights users on 10/26. 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.
dom. 11/92:18 pmFSD - SEA
1 stop23h 55mFrontier
mié. 11/121:37 pmSEA - FSD
1 stop21h 51mFrontier
Deal found 10/26$171
This United Airlines deal was found by Cheapflights users on 10/26. 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.
mié. 12/176:00 amFSD - SEA
1 stop6h 10mUnited Airlines
lun. 1/57:00 amSEA - FSD
1 stop8h 30mUnited Airlines
Deal found 10/26$269
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.
mar. 12/161:55 pmFSD - SEA
2 stops9h 05mUnited Airlines
sáb. 1/1012:25 pmSEA - FSD
1 stop6h 14mUnited Airlines
Deal found 10/28$274
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.
vie. 12/51:55 pmFSD - SEA
2 stops11h 20mUnited Airlines
dom. 12/73:45 pmSEA - FSD
1 stop5h 58mUnited Airlines
Deal found 10/28$305
This United Airlines deal was found by Cheapflights users on 10/27. 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.
dom. 12/76:00 amFSD - SEA
1 stop6h 09mUnited Airlines
lun. 12/151:05 pmSEA - FSD
2 stops8h 38mUnited Airlines
Deal found 10/27$324
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
vie. 12/268:50 pmFSD - SEA
2 stops39h 21mMultiple Airlines
jue. 1/86:07 pmSEA - FSD
1 stop24h 34mMultiple Airlines
Deal found 10/26$328
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.
jue. 11/206:30 amFSD - SEA
1 stop8h 39mAmerican Airlines
lun. 11/242:46 pmSEA - FSD
1 stop7h 13mAmerican Airlines
Deal found 10/28$329
This United Airlines deal was found by Cheapflights users on 10/27. 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.
sáb. 12/68:00 amFSD - SEA
2 stops12h 25mUnited Airlines
lun. 12/85:00 amSEA - FSD
1 stop5h 51mUnited Airlines
Deal found 10/27$332
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.
mié. 11/126:00 amFSD - SEA
1 stop6h 35mUnited Airlines
dom. 11/1611:30 pmSEA - FSD
1 stop9h 12mUnited Airlines
Deal found 10/28$339
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.
mié. 11/124:00 pmFSD - SEA
1 stop9h 18mAmerican Airlines
sáb. 11/1512:59 amSEA - FSD
1 stop7h 28mAmerican Airlines
Deal found 10/28$354

Cheap 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 octubre 28, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$171
(Mytrip)

Popular in

March

Cheapest in

August

Average price

$376
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
Highest demand for flights based on searches. 9% potential increase in price ($46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($20 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 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 octubre 28, 2025.
Use the filters below to find and compare flights from Sioux Falls to Seattle that are best for you.

Fly from

Sioux Falls

Fly to

Seattle

Route

Depart

Return

Price

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

dom. 11/9

2:18 pm-12:13 pm

1 stop23h 55m

Seattle/Tacoma Intl

mié. 11/12

1:37 pm-1:28 pm

1 stop21h 51m

$171

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

mié. 12/17

8:05 am-2:05 pm

1 stop8h 00m

Seattle/Tacoma Intl

dom. 1/4

12:14 am-10:11 am

1 stop7h 57m

$269

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

dom. 12/7

5:05 am-12:40 pm

1 stop9h 35m

Seattle/Tacoma Intl

lun. 12/15

11:59 pm-10:20 am

1 stop8h 21m

$269

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

vie. 12/5

4:25 pm-8:36 pm

1 stop6h 11m

Seattle/Tacoma Intl

dom. 12/7

1:47 pm-11:12 pm

1 stop7h 25m

$269

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

mar. 12/16

1:55 pm-9:00 pm

2 stops9h 05m

Seattle/Tacoma Intl

sáb. 1/10

12:25 pm-8:39 pm

1 stop6h 14m

$274

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

dom. 1/25

11:43 am-9:34 am

1 stop23h 51m

Seattle/Tacoma Intl

jue. 1/29

1:39 pm-9:57 am

2 stops18h 18m

$282

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

dom. 12/7

6:00 am-10:09 am

1 stop6h 09m

Seattle/Tacoma Intl

lun. 12/15

1:05 pm-11:43 pm

2 stops8h 38m

$324

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

mié. 12/17

1:55 pm-9:00 pm

2 stops9h 05m

Seattle/Tacoma Intl

lun. 1/5

7:00 am-5:30 pm

1 stop8h 30m

$332

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

sáb. 12/6

8:00 am-6:25 pm

2 stops12h 25m

Seattle/Tacoma Intl

lun. 12/8

5:00 am-12:51 pm

1 stop5h 51m

$332

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

mié. 11/12

6:00 am-10:35 am

1 stop6h 35m

Seattle/Tacoma Intl

dom. 11/16

11:30 pm-10:42 am

1 stop9h 12m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 16 results
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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*1 star
MytripPrice 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 Sioux Falls-Seattle flights, users find the pricing of Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Sioux Falls-Seattle flight deals on Cheapflights vs. Mytrip >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 Mytrip the most. Mytrip 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?

Use this chart to determine the optimal time to book a round-trip flight from Sioux Falls to Seattle. Price data was last updated on October 24, 2025.

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 18 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, November is the cheapest month in which you can book a flight from Sioux Falls to Seattle (average of $153). Flying from Sioux Falls to Seattle in June is currently the most expensive (average of $304). 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 FSD to SEA?

Find hourly flight availability from Sioux Falls to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 28, 2025.

It’s optimal to fly from Sioux Falls to Seattle at noon. By choosing this option you can save up to 11% on the cost of your flight, compared to a flight in the morning.

How much does it cost to fly round-trip from Sioux Falls to Seattle?

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 octubre 28, 2025.
Read through reviews of airlines operating flights from Sioux Falls to Seattle, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,994 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
7,994 reviews
Delta
7.9
Good
7,994 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
9,001 reviews
Delta
7.9
Good
7,994 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
11,032 reviews
Delta
7.9
Good
7,994 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
3,124 reviews
Delta
7.9
Good
7,994 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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 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 8h. Fly via Frontier, American Airlines, or Delta 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 $183 on this airline. Additional options worth looking into are Delta and American Airlines, starting at $208 and $268 round-trip. These flights start at 57% lower than the current average price 3 months from now.

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

    $226 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 Alaska Airlines, with prices starting from $295 and $385, 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, November is the cheapest month in which you can book a flight from Sioux Falls to Seattle (average of $153). Flying from Sioux Falls to Seattle in June is currently the most expensive (average of $304). 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
Tukwila
Tacoma
Lakewood
Olympia
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Kirkland
Lacey
Kent
Federal Way
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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 octubre 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$183Average$280FlexibilityNo cancel feeOn-time62%
DeltaCheapest$208Average$433FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$422FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$284Average$514FlexibilityNo cancel feeOn-time69%

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