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South Dakota

$107+ Cheap flights from Seattle (SEA) 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FSD
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
1 adult, Economy
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Cheap flight deals from Seattle to South Dakota

Cheapest flights from Seattle to South Dakota
Explore the most affordable flight options available from Seattle to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:45 pm
SEA
-
RAP
1 stop13h 01m
Multiple Airlines
Sun 9/133:34 pm
RAP
-
SEA
1 stop19h 08m
Multiple Airlines
Deal found 7/28$238
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:53 pm
SEA
-
RAP
1 stop18h 02m
Multiple Airlines
Sun 8/233:30 pm
RAP
-
SEA
1 stop20h 09m
Multiple Airlines
Deal found 7/28$245
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:48 pm
SEA
-
RAP
1 stop13h 58m
Multiple Airlines
Thu 9/1012:36 pm
RAP
-
SEA
1 stop22h 06m
Multiple Airlines
Deal found 7/29$247
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/32:37 pm
SEA
-
FSD
1 stop27h 24m
Frontier
Mon 9/78:56 pm
FSD
-
SEA
1 stop14h 23m
Frontier
Deal found 7/29$250
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.
Wed 9/28:48 pm
SEA
-
RAP
1 stop13h 58m
Multiple Airlines
Sun 9/133:34 pm
RAP
-
SEA
1 stop27h 54m
Multiple Airlines
Deal found 7/30$265
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/112:22 pm
SEA
-
FSD
1 stop27h 01m
Frontier
Fri 8/148:08 pm
FSD
-
SEA
1 stop14h 56m
Frontier
Deal found 7/29$305
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/192:47 pm
SEA
-
FSD
1 stop7h 01m
American Airlines
Wed 8/268:30 am
FSD
-
SEA
1 stop7h 33m
American Airlines
Deal found 7/28$339
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:48 pm
SEA
-
FSD
1 stop22h 24m
Multiple Airlines
Sun 9/1310:02 pm
FSD
-
SEA
1 stop13h 40m
Multiple Airlines
Deal found 7/31$343
This CheapOair deal was found by Cheapflights users on 7/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/287:06 pm
SEA
-
FSD
1 stop22h 17m
Frontier
Mon 8/38:08 pm
FSD
-
SEA
1 stop17h 12m
Frontier
Deal found 7/27$350
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/311:59 pm
SEA
-
FSD
1 stop8h 21m
Delta
Mon 9/75:00 am
FSD
-
SEA
1 stop5h 48m
Delta
Deal found 7/29$359
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/165:00 am
SEA
-
FSD
1 stop5h 39m
United Airlines
Tue 9/229:35 am
FSD
-
SEA
2 stops8h 39m
United Airlines
Deal found 7/28$364
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/32:37 pm
SEA
-
FSD
1 stop27h 24m
Multiple Airlines
Sun 9/1310:02 pm
FSD
-
SEA
1 stop13h 40m
Multiple Airlines
Deal found 7/31$370

Find flight deals from Seattle to South Dakota

Keep the following information in mind while searching for Seattle to South Dakota flight deals. Data was last updated August 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$238
(Kiwi.com)

One-way from

$107
(Kiwi.com)

Popular in

May

Cheapest in

November

Average price

$473
Provider with most accurate pricing for Seattle/Tacoma Intl-Sioux Falls Joe Foss Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sioux Falls Joe Foss Field flights.
Search Deals
From Seattle/Tacoma Intl to South Dakota
Search Deals
One-way flight from Seattle/Tacoma Intl to South Dakota
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($154 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 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 Seattle 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 August 1, 2026.
Use the filters below to find and compare flights from Seattle to South Dakota that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 9/3

11:59 pm-10:20 am

1 stop8h 21m

Sioux Falls Joe Foss Field

Mon 9/7

5:00 am-8:48 am

1 stop5h 48m

$359
Quickest round-trip

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Mon 8/31

3:54 pm-10:28 pm

1 stop5h 34m

Rapid City

Sun 9/6

5:00 am-10:01 am

1 stop6h 01m

$361

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 10/28

7:06 am-8:04 pm

2 stops10h 58m

Sioux Falls Joe Foss Field

Tue 11/3

5:55 am-9:47 am

1 stop5h 52m

$364

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Fri 8/21

5:00 am-12:24 pm

1 stop6h 24m

Rapid City

Fri 8/28

5:00 am-10:01 am

1 stop6h 01m

$389

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Wed 9/9

5:00 am-12:24 pm

1 stop6h 24m

Rapid City

Thu 9/17

4:41 pm-11:04 pm

1 stop7h 23m

$391

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Tue 9/1

9:35 am-10:37 pm

2 stops12h 02m

Rapid City

Fri 9/11

4:31 pm-11:55 pm

1 stop8h 24m

$417

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Wed 9/2

9:35 am-10:37 pm

2 stops12h 02m

Rapid City

Thu 9/10

4:31 pm-11:55 pm

1 stop8h 24m

$417

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Thu 8/27

6:30 am-5:06 pm

2 stops9h 36m

Rapid City

Mon 8/31

10:26 am-9:51 pm

2 stops12h 25m

$419

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Wed 8/19

2:34 pm-10:28 pm

1 stop6h 54m

Rapid City

Sat 8/22

11:22 am-6:29 pm

2 stops8h 07m

$421

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Fri 9/11

5:30 am-5:20 pm

1 stop9h 50m

Sioux Falls Joe Foss Field

Fri 9/18

2:10 pm-8:29 pm

1 stop8h 19m

$428

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 40 resultsSorted by cheapest first
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Best time to book a flight from Seattle to South Dakota

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

What is the cheapest month to book a flight from Seattle to South Dakota?

Currently, November is the cheapest month in which you can book a flight from Seattle to South Dakota (average of $353). Flying from Seattle to South Dakota in June is currently the most expensive (average of $627). 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 Seattle to South Dakota?

Airfare is below average for this route at the moment.
Seattle to South Dakota flights typically cost between $353 and $586 in September.
The cheapest round-trip price found within the last 5 days was $250 on Frontier (Sep 3-Sep 7).

How far ahead should I book a flight from Seattle to South Dakota?

The best time to book flights from Seattle to South Dakota is 75 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 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 August 1, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Seattle to South Dakota have to say. 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
7.8
Good
8,497 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Overall

7.8

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,497 reviews
Delta
7.8
Good
8,497 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Overall

7.8

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
10,062 reviews
Delta
7.8
Good
8,497 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Overall

7.8

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,845 reviews
Delta
7.8
Good
8,497 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Overall

7.8

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Seattle to South Dakota. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to South Dakota?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to South Dakota from Seattle.

  • How long is the flight from Seattle to South Dakota?

    Airlines like Frontier, American Airlines, and Delta fly from Seattle to South Dakota in about 7h 01m. The time it takes to get you to your destination can typically vary by up to 20h 23m. Seattle and South Dakota are separated by a distance of 1259 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Seattle to South Dakota?

    Most travelers choose Seattle/Tacoma Intl - Rapid City, Seattle/Tacoma Intl - Sioux Falls Joe Foss Field or Seattle/Tacoma Intl - Aberdeen when deciding on the best route from Seattle to South Dakota.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to South Dakota?

    Currently, November is the cheapest month in which you can book a flight from Seattle to South Dakota (average of $353). Flying from Seattle to South Dakota in June is currently the most expensive (average of $627). 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 Seattle to South Dakota

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

Discover the top 3 airlines that operate flights from Seattle 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 August 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$190Average$442FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$423FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$286Average$547FlexibilityNo cancel feeOn-time69%

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