South Dakota

$211+ Cheap flights from Washington to South Dakota

SEA — FSD
Nov 29 — Dec 61
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Cheap flight deals from Washington to South Dakota

Cheapest flights from Washington to South Dakota

Fri 12/412:26 pm -
2 stops9h 20m
Mon 12/72:40 pm -
1 stop6h 20m
Deal found 10/29$344
Wed 12/94:58 pm -
2 stops27h 00m
Sun 12/139:48 pm -
1 stop15h 28m
Deal found 10/29$348
Tue 12/84:04 pm -
1 stop5h 25m
Sat 12/1212:18 pm -
1 stop7h 06m
Deal found 10/29$349
Fri 11/206:25 am -
1 stop6h 18m
Tue 12/12:40 pm -
1 stop6h 37m
Deal found 10/28$349
Fri 11/201:50 pm -
2 stops7h 51m
Thu 11/2611:29 am -
2 stops8h 28m
Deal found 10/28$359
Fri 12/116:00 am -
1 stop8h 20m
Mon 12/1412:59 pm -
1 stop6h 11m
Deal found 10/28$359
Fri 12/112:05 pm -
1 stop7h 25m
Mon 12/149:24 am -
2 stops8h 58m
Deal found 10/28$364
Fri 11/203:49 pm -
1 stop5h 41m
Mon 11/235:00 am -
1 stop5h 47m
Deal found 10/28$365
Tue 11/105:00 am -
1 stop6h 48m
Sat 11/147:00 am -
1 stop6h 47m
Deal found 10/26$369
Fri 11/275:05 am -
1 stop5h 30m
Mon 12/77:40 am -
1 stop10h 38m
Deal found 10/28$373
Fri 11/1312:21 pm -
2 stops9h 20m
Tue 11/172:23 pm -
1 stop6h 21m
Deal found 10/29$374
Tue 11/102:07 pm -
1 stop7h 34m
Sat 11/1411:29 am -
2 stops8h 28m
Deal found 10/26$374

Find flight deals from Washington to South Dakota

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$339
(United Airlines)

One-way from

$211
(Kiwi.com)

Popular in

May

Cheapest in

March

Average price

$553
Provider with most accurate pricing for Seattle/Tacoma Intl-Sioux Falls Joe Foss Field flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sioux Falls Joe Foss Field flights.
From Washington to South Dakota
One-way flight from Washington to South Dakota
Highest demand for flights based on searches. 19% potential increase in price ($122 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Average for round-trip flights in October 2026

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SpokaneRapid City

GEG Spokane - RAP Rapid City

GEGRAP

Spokane

Mon 11/23

5:36 pm-3:08 pm

1 stop20h 32m

Rapid City

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$215

SeattleRapid City

SEA Seattle/Tacoma Intl - RAP Rapid City

SEARAP

Seattle/Tacoma Intl

Thu 11/19

10:50 am-9:06 pm

2 stops9h 16m

Rapid City

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$248

PascoRapid City

PSC Pasco Tri Cities - RAP Rapid City

PSCRAP

Pasco Tri Cities

Tue 12/15

12:59 pm-9:08 pm

1 stop7h 09m

Rapid City

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$261

SeattleRapid City

SEA Seattle/Tacoma Intl - RAP Rapid City

SEARAP

Seattle/Tacoma Intl

Fri 4/23

6:05 am-3:46 pm

1 stop8h 41m

Rapid City

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$273

SeattleSioux Falls

SEA Seattle/Tacoma Intl - FSD Sioux Falls Joe Foss Field

SEAFSD

Seattle/Tacoma Intl

Thu 11/5

9:13 pm-9:41 pm

1 stop22h 28m

Sioux Falls Joe Foss Field

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$273

SeattleRapid City

SEA Seattle/Tacoma Intl - RAP Rapid City

SEARAP

Seattle/Tacoma Intl

Wed 11/18

4:27 pm-9:06 pm

2 stops27h 39m

Rapid City

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$275

SeattleSioux Falls

SEA Seattle/Tacoma Intl - FSD Sioux Falls Joe Foss Field

SEAFSD

Seattle/Tacoma Intl

Mon 12/7

8:56 pm-3:47 pm

1 stop16h 51m

Sioux Falls Joe Foss Field

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$283

SpokaneRapid City

GEG Spokane - RAP Rapid City

GEGRAP

Spokane

Sat 11/21

6:25 am-3:54 pm

1 stop8h 29m

Rapid City

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$284

SpokaneRapid City

GEG Spokane - RAP Rapid City

GEGRAP

Spokane

Sun 11/22

6:45 am-3:54 pm

1 stop8h 09m

Rapid City

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$284

SpokaneRapid City

GEG Spokane - RAP Rapid City

GEGRAP

Spokane

Mon 11/23

5:00 am-3:54 pm

2 stops9h 54m

Rapid City

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 57 resultsSorted by cheapest first
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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

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, February is the cheapest month in which you can book a flight from State of Washington to South Dakota (average of $379). Flying from State of Washington to South Dakota in December is currently the most expensive (average of $604). 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 State of Washington to South Dakota?

Airfare is typical for this route at the moment.
State of Washington to South Dakota flights typically cost between $338 and $495 in December.
The cheapest round-trip price found within the last 5 days was $359 on Delta (Dec 11-Dec 14).

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

Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from State of Washington to South Dakota. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing South Dakota

Read through reviews of airlines operating flights from Washington to South Dakota, such as Delta,United Airlines, andAmerican 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.

Boarding

8.1

Entertainment

7.8

Crew

8.5

Comfort

7.8

Overall

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

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

Boarding

8.1

Entertainment

7.8

Crew

8.5

Comfort

7.8

Overall

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

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

Boarding

8.1

Entertainment

7.8

Crew

8.5

Comfort

7.8

Overall

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

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

Boarding

8.1

Entertainment

7.8

Crew

8.5

Comfort

7.8

Overall

7.8

Food

7.2

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

  • How long is the flight from State of Washington to South Dakota?

    Delta, United Airlines, and American Airlines can get you from State of Washington to South Dakota in just under 9h 10m. Your travel time can differ by up to 26m. The distance between State of Washington and South Dakota is about 954 mi. This flight may include one or multiple stops.

  • 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, February is the cheapest month in which you can book a flight from State of Washington to South Dakota (average of $379). Flying from State of Washington to South Dakota in December is currently the most expensive (average of $604). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Washington to South Dakota

Top 3 airlines flying from Washington to South Dakota

AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$190Average$435FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$278Average$478FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$289Average$468FlexibilityNo cancel feeOn-time71%

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