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$98+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — SEA
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap 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 July 31, 2025.

Round-trip from

$218
(Frontier)

One-way from

$98
(Mytrip)

Popular in

March

Cheapest in

July

Average price

$339
From South Dakota to Washington
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One-way flight from South Dakota to Washington
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Highest demand for flights based on searches. 8% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($24 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 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 July 31, 2025.

This Frontier deal was found by Cheapflights users on 7/29. 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.
Wed 8/203:07 pmFSD - SEA
1 stop9h 54mFrontier
Wed 8/276:41 amSEA - FSD
1 stop5h 31mFrontier
Deal found 7/29$218
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/142:57 pmFSD - PDX
1 stop11h 19mFrontier
Wed 8/206:51 amPDX - FSD
1 stop5h 21mFrontier
Deal found 7/30$228
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/115:30 amFSD - PDX
1 stop7h 19mAmerican Airlines
Sat 11/155:30 amPDX - FSD
1 stop9h 09mAmerican Airlines
Deal found 7/30$251
This American Airlines deal was found by Cheapflights users on 7/29. 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.
Wed 11/195:30 amFSD - GEG
1 stop9h 02mAmerican Airlines
Sun 11/231:14 pmGEG - FSD
1 stop8h 45mAmerican Airlines
Deal found 7/29$255
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/195:00 amFSD - PDX
2 stops7h 34mDelta
Tue 8/264:58 pmPDX - FSD
1 stop4h 48mDelta
Deal found 7/28$256
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/268:32 amRAP - PDX
1 stop5h 31mUnited Airlines
Sun 8/315:00 amPDX - RAP
1 stop6h 38mUnited Airlines
Deal found 7/31$259
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 9/264:24 pmRAP - SEA
1 stop8h 19mDelta
Sun 10/56:00 amSEA - RAP
1 stop8h 43mDelta
Deal found 7/31$259
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1511:16 amRAP - GEG
1 stop7h 11mUnited Airlines
Tue 8/191:38 pmGEG - RAP
1 stop7h 21mUnited Airlines
Deal found 7/31$259
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/42:35 pmFSD - SEA
1 stop7h 39mAmerican Airlines
Fri 11/712:59 amSEA - FSD
1 stop7h 28mAmerican Airlines
Deal found 7/31$269
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 9/2710:48 amFSD - GEG
2 stops9h 52mDelta
Wed 10/16:10 amGEG - FSD
1 stop5h 41mDelta
Deal found 7/30$275
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/85:06 pmFSD - SEA
1 stop7h 53mUnited Airlines
Sat 9/137:00 amSEA - FSD
1 stop8h 29mUnited Airlines
Deal found 7/31$283
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/225:06 pmFSD - PDX
1 stop5h 55mUnited Airlines
Fri 9/1210:51 amPDX - FSD
1 stop9h 21mUnited Airlines
Deal found 7/31$283

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 July 31, 2025.
Use the filters below to find and compare flights from South Dakota to Washington that are best for you.

Fly from

South Dakota

Fly to

Washington

Route

Depart

Return

Price

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Wed 8/20

3:07 pm-11:01 pm

1 stop9h 54m

Seattle/Tacoma Intl

Wed 8/27

6:41 am-2:12 pm

1 stop5h 31m

$218

Sioux FallsPortland

FSD - PDX

FSDPDX

Sioux Falls Joe Foss Field

Thu 8/14

2:57 pm-12:16 am

1 stop11h 19m

Portland

Wed 8/20

6:51 am-2:12 pm

1 stop5h 21m

$228

Sioux FallsPortland

FSD - PDX

FSDPDX

Sioux Falls Joe Foss Field

Tue 8/19

1:28 pm-6:52 pm

1 stop7h 24m

Portland

Wed 8/27

7:40 am-4:35 pm

1 stop6h 55m

$251

Sioux FallsPortland

FSD - PDX

FSDPDX

Sioux Falls Joe Foss Field

Tue 8/19

5:00 am-10:34 am

2 stops7h 34m

Portland

Tue 8/26

4:58 pm-11:46 pm

1 stop4h 48m

$256

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Tue 8/26

8:32 am-1:03 pm

1 stop5h 31m

Portland

Sun 8/31

5:00 am-12:38 pm

1 stop6h 38m

$259

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Fri 9/26

4:24 pm-11:43 pm

1 stop8h 19m

Seattle/Tacoma Intl

Sun 10/5

6:00 am-3:43 pm

1 stop8h 43m

$259

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Fri 8/15

11:16 am-5:27 pm

1 stop7h 11m

Spokane

Tue 8/19

1:38 pm-9:59 pm

1 stop7h 21m

$259

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Tue 11/4

2:35 pm-8:14 pm

1 stop7h 39m

Seattle/Tacoma Intl

Fri 11/7

12:59 am-10:27 am

1 stop7h 28m

$269

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Sat 9/27

10:48 am-6:40 pm

2 stops9h 52m

Spokane

Wed 10/1

6:10 am-1:51 pm

1 stop5h 41m

$275

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Mon 9/8

5:06 pm-10:59 pm

1 stop7h 53m

Seattle/Tacoma Intl

Sat 9/13

7:00 am-5:29 pm

1 stop8h 29m

$283

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 47 results
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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, January is the cheapest month in which you can book a flight from South Dakota to State of Washington (average of $238). Flying from South Dakota to State of Washington in June is currently the most expensive (average of $389). 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 SD to WA?

Find hourly flight availability from South Dakota to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from South Dakota to State of Washington as you normally would.

How much does it cost to fly round-trip from South Dakota to State of Washington?

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 July 31, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and United 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Allegiant Air
7.2
Good
702 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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.

  • What are the cheapest airlines to fly from South Dakota to State of Washington one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $105. However, be on the lookout for offers from Delta and Frontier, 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, January is the cheapest month in which you can book a flight from South Dakota to State of Washington (average of $238). Flying from South Dakota to State of Washington in June is currently the most expensive (average of $389). 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.

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Alternative routes for South Dakota to Washington

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Top 4 airlines flying from South Dakota to Washington

Discover the top 4 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$139Average$270FlexibilityNo cancel feeOn-time62%
DeltaCheapest$208Average$487FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$267Average$535FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$268Average$432FlexibilityNo cancel feeOn-time71%

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