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

The flight from State of Washington to South Dakota depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Seattle (a popular airport in State of Washington) to Sioux Falls (the most popular airport in South Dakota), then the flight time is 5h 05m on average. If you fly from Spokane (another popular airport in State of Washington) to Sioux Falls, then the average flight time is 5h 34m.

What is the cheapest airline that flies from Washington to South Dakota?

Delta, United Airlines, and American Airlines are the most popular carriers operating from Washington to South Dakota

What airlines fly to South Dakota?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to South Dakota from State of Washington according to our data. United Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to South Dakota. Keep in mind that there are 5 different airlines that fly to South Dakota on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Washington to South Dakota?

Prices for flights from Washington to South Dakota are refreshed on a daily basis.

How many operators does momondo search for flights from Washington to South Dakota?

As of December 2025, there are 5 operators available to choose from for flights from Washington to South Dakota.

How old do you have to be to fly from Washington to South Dakota?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to South Dakota.

What documentation or ID do you need to fly to South Dakota?

The travel and health documents you'll need for your trip to South Dakota may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at South Dakota. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$126 Cheap Flights from Washington to South Dakota in 2025/26

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Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

10:51 am - 9:20 pm

SEA

RAP

9h 29m1 stop

10:10 pm - 9:36 am

RAP

SEA

12h 26m1 stop

$248Multiple Airlines

Sun, Jan 18 - Thu, Jan 22

2:00 pm - 10:28 pm

GEG

RAP

7h 28m1 stop

6:00 am - 1:03 pm

RAP

GEG

8h 03m1 stop

$269Delta

Tue, Jan 27 - Sat, Jan 31

1:20 pm - 10:28 pm

GEG

RAP

8h 08m2 stops

6:00 am - 1:03 pm

RAP

GEG

8h 03m1 stop

$274Delta

Tue, Jan 27 - Sat, Jan 31

5:00 am - 1:12 pm

PDX

RAP

7h 12m1 stop

12:35 pm - 6:10 pm

RAP

PDX

6h 35m1 stop

$279United Airlines

Wed, Jan 14 - Wed, Jan 21

12:25 pm - 8:32 pm

SEA

RAP

7h 07m1 stop

5:10 am - 9:55 am

RAP

SEA

5h 45m1 stop

$279United Airlines

Thu, Jan 8 - Sun, Jan 11

4:10 pm - 11:44 pm

GEG

FSD

5h 34m1 stop

5:18 pm - 9:22 pm

FSD

GEG

6h 04m1 stop

$279United Airlines

Mon, Jan 12 - Mon, Jan 19

1:24 pm - 7:14 pm

PDX

RAP

4h 50m1 stop

2:40 pm - 10:44 pm

RAP

PDX

9h 04m2 stops

$284United Airlines

Wed, Jan 14 - Wed, Jan 21

5:00 am - 11:25 am

SEA

RAP

5h 25m1 stop

2:40 pm - 12:56 am

RAP

SEA

11h 16m2 stops

$284United Airlines

Thu, Jan 8 - Mon, Jan 12

12:59 am - 12:41 pm

SEA

FSD

9h 42m1 stop

1:26 pm - 9:16 pm

FSD

SEA

9h 50m1 stop

$289American Airlines

Tue, Mar 10 - Wed, Mar 18

2:50 pm - 11:41 pm

PDX

FSD

6h 51m1 stop

2:25 pm - 7:51 pm

FSD

PDX

7h 26m1 stop

$304American Airlines

Sat, Jan 10 - Sat, Jan 17

United Airlines flights from State of Washington to South Dakota

Our best United Airlines deals on State of Washington to South Dakota flight tickets

United Airlines

Jan 12

GEG4:10 pmSpokane

5h 34m

1 stop

FSD11:44 pmSioux Falls Joe Foss Field

Jan 19

FSD5:18 pmSioux Falls Joe Foss Field

6h 04m

1 stop

GEG9:22 pmSpokane

$279

Find similar

United Airlines

Jan 1

GEG1:47 pmSpokane

8h 08m

1 stop

FSD11:55 pmSioux Falls Joe Foss Field

Jan 5

FSD5:12 pmSioux Falls Joe Foss Field

5h 46m

1 stop

GEG8:58 pmSpokane

$284

Find similar

United Airlines

Jan 15

SEA10:58 amSeattle/Tacoma Intl

8h 52m

1 stop

FSD9:50 pmSioux Falls Joe Foss Field

Jan 22

FSD6:00 amSioux Falls Joe Foss Field

5h 55m

1 stop

SEA9:55 amSeattle/Tacoma Intl

$285

Find similar

American Airlines flights from State of Washington to South Dakota

Our best American Airlines deals on State of Washington to South Dakota flight tickets

American Airlines

Mar 10

SEA12:59 amSeattle/Tacoma Intl

9h 42m

1 stop

FSD12:41 pmSioux Falls Joe Foss Field

Mar 18

FSD1:26 pmSioux Falls Joe Foss Field

9h 50m

1 stop

SEA9:16 pmSeattle/Tacoma Intl

$289

Find similar

American Airlines

Jan 10

PDX2:50 pmPortland

6h 51m

1 stop

FSD11:41 pmSioux Falls Joe Foss Field

Jan 17

FSD2:25 pmSioux Falls Joe Foss Field

7h 26m

1 stop

PDX7:51 pmPortland

$304

Find similar

American Airlines

May 27

SEA5:44 amSeattle/Tacoma Intl

9h 01m

1 stop

FSD4:45 pmSioux Falls Joe Foss Field

Jun 1

FSD5:46 pmSioux Falls Joe Foss Field

7h 08m

1 stop

SEA10:54 pmSeattle/Tacoma Intl

$314

Find similar

momondo 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

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Sun 1/18

10:51 am-9:20 pm

1 stop9h 29m

Rapid City

Thu 1/22

10:10 pm-9:36 am

1 stop12h 26m

$248

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Tue 1/27

2:00 pm-10:28 pm

1 stop7h 28m

Rapid City

Sat 1/31

6:00 am-1:03 pm

1 stop8h 03m

$269

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Tue 1/27

1:20 pm-10:28 pm

2 stops8h 08m

Rapid City

Sat 1/31

6:00 am-1:03 pm

1 stop8h 03m

$274

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Wed 1/14

5:00 am-1:12 pm

1 stop7h 12m

Rapid City

Wed 1/21

12:35 pm-6:10 pm

1 stop6h 35m

$279

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Thu 1/8

12:25 pm-8:32 pm

1 stop7h 07m

Rapid City

Sun 1/11

5:10 am-9:55 am

1 stop5h 45m

$279

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Mon 1/12

4:10 pm-11:44 pm

1 stop5h 34m

Sioux Falls Joe Foss Field

Mon 1/19

5:18 pm-9:22 pm

1 stop6h 04m

$279

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Wed 1/14

1:24 pm-7:14 pm

1 stop4h 50m

Rapid City

Wed 1/21

2:40 pm-10:44 pm

2 stops9h 04m

$284

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Thu 1/8

5:00 am-11:25 am

1 stop5h 25m

Rapid City

Mon 1/12

2:40 pm-12:56 am

2 stops11h 16m

$284

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Tue 3/10

12:59 am-12:41 pm

1 stop9h 42m

Sioux Falls Joe Foss Field

Wed 3/18

1:26 pm-9:16 pm

1 stop9h 50m

$289

PortlandSioux Falls

PDX - FSD

PDXFSD

Portland

Sat 1/10

2:50 pm-11:41 pm

1 stop6h 51m

Sioux Falls Joe Foss Field

Sat 1/17

2:25 pm-7:51 pm

1 stop7h 26m

$304

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to South Dakota

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to South Dakota?

The month of October is, on average, the cheapest month to fly to South Dakota from State of Washington, with most prices found around $273. If you aren’t able to travel to South Dakota during the month of October, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $286.

What is the cheapest day to depart on your flight to South Dakota?

The cheapest day to depart from State of Washington to South Dakota is on a Saturday. Travelers who choose to depart for South Dakota on a Saturday will often find tickets for as low as $507. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $643. These prices are subject to change though, so be sure to set up a Price Alert for flights to South Dakota.

What is the cheapest time of day to depart on your flight to South Dakota?

The cheapest time of day to fly to South Dakota is in the evening when flights can be purchased for as low as $318. In the afternoon is when there is more demand to fly to South Dakota, so prices are often more expensive at around $703 per ticket.

How far in advance should I book a flight to South Dakota?

You are more likely to see cheaper flights to South Dakota from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to South Dakota for around $424 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Dakota from State of Washington for as low as $328 on momondo.

Can stopping save me money on State of Washington to South Dakota flights?

You could potentially save up to 28% on your flight if you consider stops on a State of Washington to South Dakota flight.

Cheap State of Washington to South Dakota flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to South Dakota

Fastest flight time	5h 05m
Direct flights	None

The fastest flight from State of Washington to South Dakota takes 5h 05m

There are no direct flights from State of Washington to South Dakota. There are no popular flight routes from State of Washington to South Dakota.

Search flight deals

When did momondo last update prices for flights from Washington to South Dakota?
Prices for flights from Washington to South Dakota are refreshed on a daily basis.
How many operators does momondo search for flights from Washington to South Dakota?
As of December 2025, there are 5 operators available to choose from for flights from Washington to South Dakota.
How old do you have to be to fly from Washington to South Dakota?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to South Dakota.
What documentation or ID do you need to fly to South Dakota?
The travel and health documents you'll need for your trip to South Dakota may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at South Dakota. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to South Dakota

Compare and see reviews for airlines that fly from State of Washington to South Dakota with momondo

Airline	Rating	Free Cancellation	Price
Sun Country Air	PriceFrom $137	Free Cancellation	Rating 6.9 333 reviews	Search Sun Country Air flights
Frontier	PriceFrom $188	Free Cancellation	Rating 5.8 3,082 reviews	Search Frontier flights
Delta	PriceFrom $204	Free Cancellation	Rating 7.9 8,006 reviews	Search Delta flights
United Airlines	PriceFrom $252	Free Cancellation	Rating 7.4 9,091 reviews	Search United Airlines flights
American Airlines	PriceFrom $254	Free Cancellation	Rating 7.2 11,054 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to South Dakota?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to South Dakota for you.

Can I find flights from Washington to South Dakota with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington to South Dakota flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington to South Dakota?

momondo provides multiple filters to help you find the best flight to South Dakota from Washington. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington to South Dakota right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to South Dakota from Washington. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your South Dakota trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Popular cities in South Dakota

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Cheap flights from Washington to South Dakota from $126

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to South Dakota departing on 1/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Washington to South Dakota

Cheap round-trip flights

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Cheap last minute flights

United Airlines flights from State of Washington to South Dakota

Our best United Airlines deals on State of Washington to South Dakota flight tickets

American Airlines flights from State of Washington to South Dakota

Our best American Airlines deals on State of Washington to South Dakota flight tickets

momondo Fare Finder

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

See travel insights to South Dakota from

How to get the cheapest flight ticket from State of Washington to South Dakota

What is the cheapest month to fly to South Dakota?

What is the cheapest day to depart on your flight to South Dakota?

What is the cheapest time of day to depart on your flight to South Dakota?

The cheapest time of day to fly to South Dakota is in the evening when flights can be purchased for as low as $318. In the afternoon is when there is more demand to fly to South Dakota, so prices are often more expensive at around $703 per ticket.

How far in advance should I book a flight to South Dakota?

Can stopping save me money on State of Washington to South Dakota flights?

You could potentially save up to 28% on your flight if you consider stops on a State of Washington to South Dakota flight.

What is the cheapest airline that flies from Washington to South Dakota?

Delta, United Airlines, and American Airlines are the most popular carriers operating from Washington to South Dakota

What airlines fly to South Dakota?

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

Cheap State of Washington to South Dakota flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to South Dakota

Fastest flight time

Direct flights

When did momondo last update prices for flights from Washington to South Dakota?

How many operators does momondo search for flights from Washington to South Dakota?

How old do you have to be to fly from Washington to South Dakota?

What documentation or ID do you need to fly to South Dakota?

Best airlines flying from State of Washington to South Dakota

Compare and see reviews for airlines that fly from State of Washington to South Dakota with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Washington to South Dakota?

Can I find flights from Washington to South Dakota with flexible booking policies on momondo?

How can momondo help me find flights from Washington to South Dakota?

I’m not ready to book a flight from Washington to South Dakota right now. Can momondo alert me if prices change?

An easier way to manage your South Dakota trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to South Dakota

Popular cities in South Dakota

Popular flights according to clicks in the last 7 days on momondo