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South Dakota

$143+ Cheap flights from Washington to South Dakota

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FSD
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Washington to South Dakota

Keep the following information in mind while searching for Washington to South Dakota flight deals. Data was last updated September 16, 2025.

Round-trip from

$162
(Kiwi.com)

One-way from

$143
(Kiwi.com)

Popular in

April

Cheapest in

January

Average price

$409
From Washington to South Dakota
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One-way flight from Washington to South Dakota
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Highest demand for flights based on searches. 13% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Washington to South Dakota

Cheapest flights from Washington to South Dakota
Explore the most affordable flight options available from Washington to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2212:43 pmPDX - FSD
1 stop23h 41mFrontier
Mon 10/277:28 pmFSD - PDX
1 stop18h 28mFrontier
Deal found 9/14$162
This Booking.com deal was found by Cheapflights users on 9/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1512:52 pmPDX - FSD
1 stop22h 46mFrontier
Mon 11/172:32 pmFSD - PDX
1 stop23h 24mFrontier
Deal found 9/16$167
This Priceline deal was found by Cheapflights users on 9/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:12 amSEA - FSD
1 stop5h 57mFrontier
Sun 10/122:23 pmFSD - SEA
1 stop7h 25mFrontier
Deal found 9/14$210
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2812:51 pmGEG - FSD
1 stop8h 05mDelta
Fri 10/311:35 pmFSD - GEG
1 stop8h 11mDelta
Deal found 9/14$225
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/56:12 amSEA - FSD
1 stop5h 57mFrontier
Mon 10/207:28 pmFSD - SEA
1 stop18h 39mFrontier
Deal found 9/15$225
This Flightnetwork deal was found by Cheapflights users on 9/16. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2212:43 pmPDX - FSD
1 stop23h 41mFrontier
Fri 10/247:28 pmFSD - PDX
1 stop18h 20mFrontier
Deal found 9/16$228
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/299:22 amGEG - FSD
2 stops11h 35mDelta
Fri 10/318:01 amFSD - GEG
1 stop7h 04mDelta
Deal found 9/14$230
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2212:43 pmPDX - FSD
2 stops20h 08mMultiple Airlines
Mon 10/277:28 pmFSD - PDX
1 stop18h 28mMultiple Airlines
Deal found 9/14$233
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/282:17 pmGEG - RAP
1 stop7h 19mDelta
Tue 11/46:05 amRAP - GEG
1 stop8h 00mDelta
Deal found 9/14$249
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2412:40 amPDX - FSD
1 stop7h 33mDelta
Tue 10/285:20 amFSD - PDX
1 stop7h 41mDelta
Deal found 9/14$251
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Sat 11/151:14 pmGEG - FSD
1 stop8h 45mAmerican Airlines
Wed 11/195:30 amFSD - GEG
1 stop9h 02mAmerican Airlines
Deal found 9/14$251
This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Thu 10/2312:43 pmPDX - FSD
1 stop27h 50mFrontier
Thu 10/302:23 pmFSD - PDX
1 stop23h 33mFrontier
Deal found 9/16$256

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to South Dakota 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 September 16, 2025.
Use the filters below to find and compare flights from Washington to South Dakota that are best for you.

Fly from

Washington

Fly to

South Dakota

Route

Depart

Return

Price

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Fri 10/3

6:12 am-2:09 pm

1 stop5h 57m

Sioux Falls Joe Foss Field

Sun 10/12

2:23 pm-7:48 pm

1 stop7h 25m

$210

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Tue 10/28

12:51 pm-10:56 pm

1 stop8h 05m

Sioux Falls Joe Foss Field

Fri 10/31

1:35 pm-7:46 pm

1 stop8h 11m

$225

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Wed 10/29

2:17 pm-10:57 pm

1 stop6h 40m

Sioux Falls Joe Foss Field

Fri 10/31

1:35 pm-7:46 pm

1 stop8h 11m

$225

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Tue 10/28

2:17 pm-10:36 pm

1 stop7h 19m

Rapid City

Tue 11/4

6:05 am-1:05 pm

1 stop8h 00m

$249

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Sat 10/11

6:00 am-7:19 pm

2 stops11h 19m

Sioux Falls Joe Foss Field

Sat 10/25

8:01 am-1:05 pm

1 stop7h 04m

$256

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Sat 10/25

10:50 am-5:00 pm

1 stop5h 10m

Rapid City

Wed 10/29

5:15 am-9:38 am

1 stop5h 23m

$259

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Wed 10/8

5:00 am-10:57 am

1 stop4h 57m

Rapid City

Tue 10/14

7:00 am-1:03 pm

1 stop7h 03m

$259

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Wed 10/15

5:00 am-12:37 pm

1 stop6h 37m

Rapid City

Wed 10/22

5:50 pm-10:45 pm

1 stop5h 55m

$259

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Fri 10/24

12:40 am-9:53 am

1 stop8h 13m

Rapid City

Wed 10/29

6:05 am-12:50 pm

1 stop7h 45m

$259

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Wed 11/5

11:55 pm-9:53 am

1 stop8h 58m

Rapid City

Sat 11/8

2:25 pm-8:20 pm

1 stop6h 55m

$259

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 54 results
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Best time to book a flight from Washington to South Dakota

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

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

Currently, September is the cheapest month in which you can book a flight from State of Washington to South Dakota (average of $334). Flying from State of Washington to South Dakota in December is currently the most expensive (average of $446). 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 WA to SD?

Find hourly flight availability from Washington to South Dakota. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

When flying from State of Washington to South Dakota, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Reviews of airlines servicing South Dakota

Get insights into the airlines that provide service to South Dakota. 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 South Dakota. Reviews last updated September 16, 2025.
Read through reviews of airlines operating flights from Washington to South Dakota, such as Delta, United Airlines, and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

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!
Delta
8.0
Very good
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

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!
United Airlines
7.4
Good
8,924 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

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!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

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!
Sun Country Air
6.9
Okay
330 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

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!
Frontier
5.8
Fair
3,174 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

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 Washington to South Dakota. 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 State of Washington to South Dakota?

    Frontier, Delta, and United Airlines can get you from State of Washington to South Dakota in just under 5h 10m. Your travel time can differ by up to 2h 55m. The distance between State of Washington and South Dakota is about 960 mi. This flight may include one or multiple stops.

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

    The cheapest airlines for a one-way flight from State of Washington to South Dakota are Frontier ($143), Delta ($191), and American Airlines ($241).

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from State of Washington to South Dakota (average of $334). Flying from State of Washington to South Dakota in December is currently the most expensive (average of $446). 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 Washington to South Dakota

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Washington to South Dakota

Discover the top 5 airlines that operate flights from Washington to South Dakota. 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$137Average$443FlexibilityNo cancel feeOn-time83%
FrontierCheapest$184Average$360FlexibilityNo cancel feeOn-time62%
DeltaCheapest$204Average$424FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$252Average$519FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$407FlexibilityNo cancel feeOn-time71%

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