Seattle

$112+ 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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — SEA
Jul 19 — Jul 261
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Cheapflights Tip: The best prices from Sioux Falls Joe Foss Field to Seattle/Tacoma Intl are usually found in October or January, booked 29 days in advance, depart on a Tuesday or Saturday and return on a Saturday

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 July 14, 2025.

Round-trip from

$234
(FlightHub)

One-way from

$112
(Priceline)

Popular in

March

Cheapest in

October

Average price

$387
From Sioux Falls Joe Foss Field to Seattle/Tacoma Intl
One-way flight from Sioux Falls Joe Foss Field to Seattle/Tacoma Intl
Highest demand for flights based on searches. 8% potential increase in price ($45 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($23 potential savings vs. average RT price).
Average for round-trip flights in July 2025

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 July 14, 2025.

This Priceline deal was found by Cheapflights users on 7/13. 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.
Mon 7/147:32 pmFSD - SEA
1 stop7h 02mFrontier
Thu 7/176:25 amSEA - FSD
1 stop5h 37mFrontier
Deal found 7/13$188
This Delta deal was found by Cheapflights users on 7/13. 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.
Wed 8/275:00 amFSD - SEA
1 stop5h 48mDelta
Tue 9/211:55 pmSEA - FSD
1 stop8h 24mDelta
Deal found 7/13$269
This United Airlines deal was found by Cheapflights users on 7/14. 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 9/189:16 amFSD - SEA
1 stop8h 36mUnited Airlines
Tue 9/235:02 amSEA - FSD
1 stop5h 43mUnited Airlines
Deal found 7/14$338
This American Airlines deal was found by Cheapflights users on 7/14. 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 8/215:15 pmFSD - SEA
1 stop9h 41mAmerican Airlines
Thu 8/2812:46 amSEA - FSD
1 stop9h 31mAmerican Airlines
Deal found 7/14$354
This Mytrip deal was found by Cheapflights users on 7/14. 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.
Mon 8/119:39 pmFSD - SEA
2 stops20h 46mMultiple Airlines
Thu 8/146:18 pmSEA - FSD
3 stops23h 03mMultiple Airlines
Deal found 7/14$423

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 14, 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

Mon 8/11

7:32 pm-12:34 am

1 stop7h 02m

Seattle/Tacoma Intl

Thu 8/14

6:25 am-2:02 pm

1 stop5h 37m

$234

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Wed 8/27

5:00 am-8:48 am

1 stop5h 48m

Seattle/Tacoma Intl

Tue 9/2

11:55 pm-10:19 am

1 stop8h 24m

$269

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Thu 9/18

9:16 am-3:52 pm

1 stop8h 36m

Seattle/Tacoma Intl

Tue 9/23

5:02 am-12:45 pm

1 stop5h 43m

$338

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Thu 8/21

5:15 pm-12:56 am

1 stop9h 41m

Seattle/Tacoma Intl

Thu 8/28

12:46 am-12:17 pm

1 stop9h 31m

$354

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Mon 8/11

9:39 pm-4:25 pm

2 stops20h 46m

Seattle/Tacoma Intl

Thu 8/14

6:18 pm-7:21 pm

3 stops23h 03m

$423

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Sun 7/20

2:57 pm-6:46 pm

1 stop5h 49m

$112

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Fri 7/25

9:39 pm-4:25 pm

2 stops20h 46m

$214

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Tue 7/29

6:00 am-10:45 am

1 stop6h 45m

$229

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Sat 9/6

9:25 am-4:19 pm

2 stops8h 54m

$243

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/13

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 July 11, 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 29 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 $238). Flying from Sioux Falls to Seattle in June is currently the most expensive (average of $388). 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 July 14, 2025.

It’s optimal to fly from Sioux Falls to Seattle at noon. By choosing this option you can save up to 12% on the cost of your flight, compared to a flight in the morning.

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 14, 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.
8.0
Very good

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good
8.0
Very good

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.
  • 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 $234 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $269 and $338 round-trip. These flights start at 49% lower than the current average price 3 months from now.

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

    $112 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 $229 and $243, 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 $238). Flying from Sioux Falls to Seattle in June is currently the most expensive (average of $388). 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
Ocean Shores
Lynnwood
Lacey
Leavenworth
Renton
Olympia
Puyallup
Cle Elum
Shoreline
Kent
Chehalis
Kirkland
Aberdeen
Federal Way
Shelton
Silverdale

Browse thousands of different options on Cheapflights for your next trip

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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 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$138Average$230FlexibilityNo cancel feeOn-time62%
DeltaCheapest$229Average$438FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$435FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$323Average$600FlexibilityNo cancel feeOn-time69%

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