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$126+ Cheap flights from South Dakota to Washington

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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — SEA
Sep 2 — Sep 91
Wed 9/2
Wed 9/9
1 adult, Economy
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Cheap flight deals from South Dakota to Washington

Cheapest flights from South Dakota to Washington
Explore the most affordable flight options available from South Dakota to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 3, 2026.

This Frontier deal was found by Cheapflights users on 7/31. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:56 pm
FSD
-
SEA
1 stop18h 26m
Frontier
Sun 8/307:06 pm
SEA
-
FSD
1 stop22h 55m
Frontier
Deal found 7/31$240
This CheapOair deal was found by Cheapflights users on 7/31. 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.
Fri 8/288:56 pm
FSD
-
PDX
1 stop22h 15m
Frontier
Fri 9/412:20 pm
PDX
-
FSD
1 stop5h 41m
Frontier
Deal found 7/31$250
This Frontier deal was found by Cheapflights users on 8/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/48:56 pm
FSD
-
SEA
1 stop14h 23m
Frontier
Thu 9/104:27 pm
SEA
-
FSD
1 stop25h 40m
Frontier
Deal found 8/3$267
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:31 pm
FSD
-
SEA
1 stop16h 20m
Multiple Airlines
Sat 10/249:16 pm
SEA
-
FSD
1 stop13h 50m
Multiple Airlines
Deal found 7/30$287
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/196:00 am
FSD
-
PDX
1 stop5h 32m
United Airlines
Tue 9/224:07 pm
PDX
-
FSD
1 stop5h 37m
United Airlines
Deal found 7/30$301
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:22 pm
FSD
-
PDX
2 stops18h 32m
Multiple Airlines
Tue 10/135:35 pm
PDX
-
FSD
1 stop23h 01m
Multiple Airlines
Deal found 7/30$309
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:22 pm
FSD
-
PDX
2 stops18h 32m
Multiple Airlines
Fri 10/912:34 pm
PDX
-
FSD
1 stop28h 02m
Multiple Airlines
Deal found 7/30$310
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/412:16 pm
FSD
-
PDX
1 stop25h 38m
Multiple Airlines
Thu 10/812:34 pm
PDX
-
FSD
1 stop28h 02m
Multiple Airlines
Deal found 7/30$312
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/412:16 pm
FSD
-
PDX
1 stop25h 38m
Multiple Airlines
Wed 10/145:35 pm
PDX
-
FSD
2 stops15h 41m
Multiple Airlines
Deal found 7/30$317
This Delta deal was found by Cheapflights users on 7/31. 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.
Fri 10/24:28 pm
FSD
-
PDX
1 stop8h 42m
Delta
Tue 10/63:22 pm
PDX
-
FSD
1 stop6h 00m
Delta
Deal found 7/31$320
This American Airlines deal was found by Cheapflights users on 8/2. 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 9/108:05 am
FSD
-
PSC
1 stop8h 46m
American Airlines
Tue 9/155:05 am
PSC
-
FSD
1 stop6h 34m
American Airlines
Deal found 8/2$321
This Delta deal was found by Cheapflights users on 7/30. 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.
Sat 10/31:05 pm
FSD
-
PDX
1 stop6h 26m
Delta
Sat 10/103:00 pm
PDX
-
FSD
1 stop6h 03m
Delta
Deal found 7/30$321

Find flight deals from South Dakota to Washington

Keep the following information in mind while searching for South Dakota to Washington flight deals. Data was last updated August 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$240
(Frontier)

One-way from

$126
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$428
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 South Dakota to Washington
Search Deals
One-way flight from South Dakota to Washington
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($85 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from South Dakota to Washington 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 August 3, 2026.
Use the filters below to find and compare flights from South Dakota to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Sioux FallsPortland

FSD - PDX

FSDPDX

Sioux Falls Joe Foss Field

Sat 9/19

9:35 am-6:19 pm

2 stops10h 44m

Portland

Tue 9/22

5:00 am-12:39 pm

1 stop5h 39m

$306

Sioux FallsPortland

FSD - PDX

FSDPDX

Sioux Falls Joe Foss Field

Fri 10/2

4:28 pm-11:10 pm

1 stop8h 42m

Portland

Tue 10/6

3:22 pm-11:22 pm

1 stop6h 00m

$320

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Wed 9/9

4:31 pm-10:54 pm

1 stop7h 23m

Spokane

Tue 9/22

7:30 pm-10:01 am

2 stops13h 31m

$324

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Fri 9/18

5:48 pm-10:53 pm

1 stop6h 05m

Portland

Sun 9/20

5:00 am-11:55 am

1 stop5h 55m

$329

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Fri 8/28

8:22 am-12:57 pm

1 stop6h 35m

Spokane

Fri 9/4

2:05 pm-10:51 pm

1 stop6h 46m

$329

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Wed 8/26

3:27 pm-9:05 pm

1 stop6h 38m

Portland

Mon 8/31

5:00 am-12:24 pm

1 stop6h 24m

$329

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Sat 8/29

1:26 pm-7:24 pm

1 stop7h 58m

Spokane

Sat 9/5

2:05 pm-10:51 pm

1 stop6h 46m

$329
Quickest round-trip

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Wed 10/28

9:32 am-12:47 pm

1 stop5h 15m

Spokane

Sat 10/31

4:10 pm-11:44 pm

1 stop5h 34m

$349

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Thu 10/22

8:30 am-12:15 pm

1 stop5h 45m

Spokane

Sun 10/25

1:54 pm-11:22 pm

1 stop7h 28m

$349

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 8/26

10:26 am-3:52 pm

1 stop6h 26m

Seattle/Tacoma Intl

Wed 9/2

11:03 am-5:58 pm

1 stop5h 55m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from South Dakota to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from South Dakota 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 South Dakota to Washington

What is the cheapest month to book a flight from South Dakota to State of Washington?

Currently, April is the cheapest month in which you can book a flight from South Dakota to State of Washington (average of $363). Flying from South Dakota to State of Washington in July is currently the most expensive (average of $617). 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 South Dakota to State of Washington?

Airfare is below average for this route at the moment.
South Dakota to State of Washington flights typically cost between $368 and $514 in August.
The cheapest round-trip price found within the last 5 days was $240 on Frontier (Aug 24-Aug 30).

How far ahead should I book a flight from South Dakota to State of Washington?

The best time to book flights from South Dakota to State of Washington is 31 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated August 3, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines from South Dakota to Washington by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,488 reviews

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.8

Boarding

8.1

Overall

7.8

Reviews

1 / 20
4.0
Okay

Peter,Oct 2023

MSP - GEG

The amount of carry on is put of control. We were in group 3 boarding and there was no room in upper storage for our 1 bag (between 2 people) Just because we can’t afford to up grade our seats… $2000 more. We get penaltized. Make us feel less than
Delta
7.8
Good
8,488 reviews
Delta
7.8
Good
8,488 reviews

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.8

Boarding

8.1

Overall

7.8

Reviews

1 / 20
4.0
Okay

Peter,Oct 2023

MSP - GEG

The amount of carry on is put of control. We were in group 3 boarding and there was no room in upper storage for our 1 bag (between 2 people) Just because we can’t afford to up grade our seats… $2000 more. We get penaltized. Make us feel less than
United Airlines
7.4
Good
10,058 reviews
Delta
7.8
Good
8,488 reviews

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.8

Boarding

8.1

Overall

7.8

Reviews

1 / 20
4.0
Okay

Peter,Oct 2023

MSP - GEG

The amount of carry on is put of control. We were in group 3 boarding and there was no room in upper storage for our 1 bag (between 2 people) Just because we can’t afford to up grade our seats… $2000 more. We get penaltized. Make us feel less than
American Airlines
7.1
Good
11,843 reviews
Delta
7.8
Good
8,488 reviews

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.8

Boarding

8.1

Overall

7.8

Reviews

1 / 20
4.0
Okay

Peter,Oct 2023

MSP - GEG

The amount of carry on is put of control. We were in group 3 boarding and there was no room in upper storage for our 1 bag (between 2 people) Just because we can’t afford to up grade our seats… $2000 more. We get penaltized. Make us feel less than
Frontier
5.6
Fair
2,740 reviews
Delta
7.8
Good
8,488 reviews

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.8

Boarding

8.1

Overall

7.8

Reviews

1 / 20
4.0
Okay

Peter,Oct 2023

MSP - GEG

The amount of carry on is put of control. We were in group 3 boarding and there was no room in upper storage for our 1 bag (between 2 people) Just because we can’t afford to up grade our seats… $2000 more. We get penaltized. Make us feel less than

Related info for your journey

Find useful and relevant information for your journey from South Dakota to Washington. 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 South Dakota to State of Washington?

    Airlines like Delta, United Airlines, and Allegiant Air fly from South Dakota to State of Washington in about 6h 05m. The time it takes to get you to your destination can typically vary by up to 11h 04m. The distance between South Dakota and State of Washington is about 960 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 to fly from South Dakota to State of Washington one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $96. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from South Dakota to State of Washington for a low price.

  • Can I find deals for flights from South Dakota to Washington that include hotel bookings?

    Yes. In addition to deals on South Dakota to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from South Dakota to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from South Dakota to Washington.

  • Can I find deals for business class flights from South Dakota to Washington?

    Yes. Cheapflights offers flight deals from South Dakota to Washington 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 South Dakota to State of Washington?

    Currently, April is the cheapest month in which you can book a flight from South Dakota to State of Washington (average of $363). Flying from South Dakota to State of Washington in July is currently the most expensive (average of $617). 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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Alternative routes for South Dakota to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from South Dakota to Washington

Discover the top 3 airlines that operate flights from South Dakota to Washington. 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 August 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$228Average$436FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$244Average$442FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$268Average$487FlexibilityNo cancel feeOn-time71%

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