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

The cheapest airline one-way is Allegiant Air, with whom users have recently found tickets for as low as $126. However, be on the lookout for offers from Frontier and Sun Country Air, as they are both options that can get you from South Dakota to State of Washington for a low price.

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

To save up to 150% on this flight, we recommend booking at least 30 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from South Dakota to State of Washington from $292 1-2 weeks out and tickets from $883 for flights departing within the next 72 hours.

What is the cheapest month to fly from South Dakota to State of Washington?

Our data shows that October tends to be the cheapest month to fly to State of Washington from South Dakota. Users have commonly found prices around $510 for the month, but tickets can be as low as $138. Due to multiple factors, prepare for potentially higher prices in March.

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.

$123+ Flights from South Dakota to Washington - Compare & Save Big

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from South Dakota to Washington with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from South Dakota to Washington

Most accurate provider	Mytrip 3 stars
Most trusted provider	Mytrip 3 stars
Round-trip from	$258 (Frontier)
One-way from	$123 (Mytrip)
Popular in	March
Cheapest in	October
Average price	$463

Provider with most accurate pricing for Sioux Falls Joe Foss Field-Seattle/Tacoma Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Seattle/Tacoma Intl flights.

Search Deals

From South Dakota to Washington

Search Deals

One-way flight from South Dakota to Washington

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($17 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

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 April 30, 2025.

Fri 5/303:58 pmFSD - SEA

1 stop10h 39mFrontier

Mon 6/26:25 amSEA - FSD

1 stop6h 33mFrontier

Deal found 4/29

$258

Wed 9/174:38 pmRAP - PDX

1 stop7h 05mAmerican Airlines

Tue 9/237:00 amPDX - RAP

1 stop9h 27mAmerican Airlines

Deal found 4/28

$259

Wed 5/147:00 amRAP - GEG

1 stop6h 38mUnited Airlines

Sun 5/184:10 pmGEG - RAP

1 stop5h 06mUnited Airlines

Deal found 4/29

$259

Tue 6/37:59 pmFSD - GEG

1 stop5h 16mDelta

Sun 6/87:30 pmGEG - FSD

2 stops12h 44mDelta

Deal found 4/29

$260

Mon 5/269:58 pmFSD - SEA

1 stop15h 48mMultiple Airlines

Mon 6/210:49 amSEA - FSD

1 stop8h 19mMultiple Airlines

Deal found 4/28

$275

Thu 7/35:59 pmRAP - PDX

1 stop5h 17mUnited Airlines

Mon 7/75:00 amPDX - RAP

1 stop6h 46mUnited Airlines

Deal found 4/28

$287

Wed 5/141:32 pmFSD - GEG

1 stop9h 21mAmerican Airlines

Sun 5/181:22 pmGEG - FSD

1 stop6h 15mAmerican Airlines

Deal found 4/29

$289

Tue 5/134:20 pmFSD - PSC

1 stop5h 15mDelta

Sat 5/176:45 amPSC - FSD

1 stop6h 51mDelta

Deal found 4/28

$289

Mon 6/235:27 pmRAP - SEA

1 stop6h 23mSun Country Air

Thu 6/2611:59 pmSEA - RAP

1 stop15h 22mSun Country Air

Deal found 4/29

$290

Tue 6/106:07 pmFSD - PDX

2 stops7h 32mDelta

Wed 6/188:29 pmPDX - FSD

2 stops11h 45mDelta

Deal found 4/27

$295

Wed 5/146:00 amFSD - GEG

2 stops10h 41mUnited Airlines

Sun 5/186:00 amGEG - FSD

2 stops12h 49mUnited Airlines

Deal found 4/29

$299

Sat 6/143:31 pmRAP - PDX

1 stop19h 14mMultiple Airlines

Wed 6/186:39 pmPDX - RAP

1 stop25h 33mMultiple Airlines

Deal found 4/28

$307

Best flights from South Dakota to Washington
Discover carefully curated flight deals from South Dakota to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 30, 2025.

Fri 5/303:58 pmFSD - SEA

1 stop10h 39mFrontier

Mon 6/26:25 amSEA - FSD

1 stop6h 33mFrontier

Deal found 4/29

$258

Wed 5/147:00 amRAP - GEG

1 stop6h 38mUnited Airlines

Sun 5/184:10 pmGEG - RAP

1 stop5h 06mUnited Airlines

Deal found 4/29

$259

Tue 6/37:59 pmFSD - GEG

1 stop5h 16mDelta

Sun 6/87:30 pmGEG - FSD

2 stops12h 44mDelta

Deal found 4/29

$260

Mon 5/269:58 pmFSD - SEA

1 stop15h 48mMultiple Airlines

Mon 6/210:49 amSEA - FSD

1 stop8h 19mMultiple Airlines

Deal found 4/28

$275

Wed 5/141:32 pmFSD - GEG

1 stop9h 21mAmerican Airlines

Sun 5/181:22 pmGEG - FSD

1 stop6h 15mAmerican Airlines

Deal found 4/29

$289

Mon 6/235:27 pmRAP - SEA

1 stop6h 23mSun Country Air

Thu 6/2611:59 pmSEA - RAP

1 stop15h 22mSun Country Air

Deal found 4/29

$290

Sun 6/89:33 pmFSD - GEG

1 stop15h 45mAllegiant Air

Sun 6/159:35 amGEG - FSD

1 stop23h 34mAllegiant Air

Deal found 4/29

$310

Thu 7/35:59 pmRAP - PDX

1 stop5h 17mUnited Airlines

Mon 7/75:00 amPDX - RAP

1 stop6h 46mUnited Airlines

Deal found 4/28

$287

Tue 6/106:07 pmFSD - PDX

2 stops7h 32mDelta

Wed 6/188:29 pmPDX - FSD

2 stops11h 45mDelta

Deal found 4/27

$295

Sat 6/143:31 pmRAP - PDX

1 stop19h 14mMultiple Airlines

Wed 6/186:39 pmPDX - RAP

1 stop25h 33mMultiple Airlines

Deal found 4/28

$307

Fri 7/115:11 pmFSD - PDX

1 stop9h 16mAmerican Airlines

Wed 7/165:30 amPDX - FSD

1 stop9h 01mAmerican Airlines

Deal found 4/28

$319

Wed 5/146:00 amFSD - GEG

2 stops10h 41mUnited Airlines

Sun 5/186:00 amGEG - FSD

2 stops12h 49mUnited Airlines

Deal found 4/29

$299

Last-minute flights from South Dakota to Washington
Discover last-minute flight deals from South Dakota to Washington. Data last updated April 30, 2025 and is based on user searches.

Fri 5/22:08 pmFSD - PDX

1 stop12h 30mMultiple Airlines

Tue 5/67:40 amPDX - FSD

2 stops13h 03mMultiple Airlines

Deal found 4/28

$385

Sat 5/312:26 pmRAP - PDX

1 stop10h 16mAmerican Airlines

Sat 5/105:26 amPDX - RAP

1 stop9h 38mAmerican Airlines

Deal found 4/28

$379

Mon 5/54:53 pmFSD - GEG

1 stop5h 57mUnited Airlines

Sun 5/115:29 amGEG - FSD

1 stop5h 09mUnited Airlines

Deal found 4/27

$329

Mon 5/55:00 amFSD - GEG

2 stops9h 07mDelta

Sun 5/117:25 pmGEG - FSD

2 stops12h 50mDelta

Deal found 4/27

$379

Tue 5/612:27 pmFSD - SEA

1 stop7h 01mAmerican Airlines

Tue 5/136:20 amSEA - FSD

1 stop7h 17mAmerican Airlines

Deal found 4/28

$465

Wed 5/76:00 amFSD - SEA

1 stop14h 06mUnited Airlines

Tue 5/208:50 amSEA - FSD

1 stop12h 56mUnited Airlines

Deal found 4/27

$535

Tue 5/134:20 pmFSD - PSC

1 stop5h 15mDelta

Sat 5/176:45 amPSC - FSD

1 stop6h 51mDelta

Deal found 4/28

$289

Tue 5/1311:40 amFSD - PSC

2 stops13h 40mUnited Airlines

Sat 5/171:35 pmPSC - FSD

2 stops8h 11mUnited Airlines

Deal found 4/28

$330

Tue 5/136:00 amFSD - PDX

1 stop5h 46mUnited Airlines

Sat 5/174:20 pmPDX - FSD

1 stop5h 26mUnited Airlines

Deal found 4/28

$399

Wed 5/147:00 amRAP - GEG

1 stop6h 38mUnited Airlines

Sun 5/184:10 pmGEG - RAP

1 stop5h 06mUnited Airlines

Deal found 4/29

$259

Wed 5/141:32 pmFSD - GEG

1 stop9h 21mAmerican Airlines

Sun 5/181:22 pmGEG - FSD

1 stop6h 15mAmerican Airlines

Deal found 4/29

$289

Wed 5/147:59 pmFSD - GEG

1 stop5h 16mDelta

Sun 5/187:25 pmGEG - FSD

2 stops12h 50mDelta

Deal found 4/29

$294

One-way flights from South Dakota to Washington
Search for one-way flight options from South Dakota to Washington. Find affordable one-way fares based on user searches. Data last updated April 30, 2025.

Sun 6/810:04 pmRAP - SEA

1 stop17h 21mMultiple Airlines

Deal found 4/29

$123

Sat 6/213:30 pmRAP - PDX

1 stop19h 15mAllegiant Air

Deal found 4/27

$126

Mon 5/52:08 pmFSD - SEA

1 stop12h 36mFrontier

Deal found 4/29

$135

Mon 7/75:21 pmRAP - PDX

1 stop6h 25mSun Country Air

Deal found 4/29

$143

Fri 5/233:58 pmFSD - PDX

1 stop10h 19mFrontier

Deal found 4/28

$156

Mon 7/711:16 amRAP - PDX

2 stops10h 21mUnited Airlines

Deal found 4/29

$181

Sat 7/121:01 pmFSD - GEG

2 stops11h 36mDelta

Deal found 4/28

$195

Sat 7/1211:55 amFSD - GEG

1 stop7h 32mUnited Airlines

Deal found 4/28

$200

Wed 8/64:30 pmRAP - SEA

1 stop8h 22mDelta

Deal found 4/28

$206

Fri 5/239:58 pmFSD - PDX

2 stops20h 47mMultiple Airlines

Deal found 4/28

$206

Fri 7/115:11 pmFSD - GEG

1 stop8h 17mAmerican Airlines

Deal found 4/29

$230

Tue 5/134:25 pmRAP - PDX

1 stop8h 00mDelta

Deal found 4/28

$236

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Fri 5/30

3:58 pm-12:37 am

1 stop10h 39m

Seattle/Tacoma Intl

Mon 6/2

6:25 am-2:58 pm

1 stop6h 33m

$258

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Wed 5/14

7:00 am-12:38 pm

1 stop6h 38m

Spokane

Sun 5/18

4:10 pm-10:16 pm

1 stop5h 06m

$259

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Tue 6/3

7:59 pm-11:15 pm

1 stop5h 16m

Spokane

Sun 6/8

7:30 pm-10:14 am

2 stops12h 44m

$260

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Mon 5/26

9:58 pm-11:46 am

1 stop15h 48m

Seattle/Tacoma Intl

Mon 6/2

10:49 am-9:08 pm

1 stop8h 19m

$275

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Thu 7/3

5:59 pm-10:16 pm

1 stop5h 17m

Portland

Mon 7/7

5:00 am-12:46 pm

1 stop6h 46m

$287

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Wed 5/14

1:32 pm-8:53 pm

1 stop9h 21m

Spokane

Sun 5/18

1:22 pm-9:37 pm

1 stop6h 15m

$289

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Mon 6/23

5:27 pm-10:50 pm

1 stop6h 23m

Seattle/Tacoma Intl

Thu 6/26

11:59 pm-4:21 pm

1 stop15h 22m

$290

Sioux FallsPortland

FSD - PDX

FSDPDX

Sioux Falls Joe Foss Field

Tue 6/10

6:07 pm-11:39 pm

2 stops7h 32m

Portland

Wed 6/18

8:29 pm-10:14 am

2 stops11h 45m

$295

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Wed 5/14

6:00 am-2:41 pm

2 stops10h 41m

Spokane

Sun 5/18

6:00 am-8:49 pm

2 stops12h 49m

$299

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Sat 6/14

3:31 pm-9:45 am

1 stop19h 14m

Portland

Wed 6/18

6:39 pm-9:12 pm

1 stop25h 33m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 47 results

...

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 July is currently the most expensive (average of $405). 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?

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.

Rainfall in Washington by month

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

If weather is an important factor for your trip to State of Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Washington

Peruse reviews from past customers who have flown with Alaska Airlines, Delta and United Airlines from South Dakota to Washington to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,961 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

7,929 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,696 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Allegiant Air

7.3

Good

734 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

What are the cheapest airlines to fly from South Dakota to State of Washington one-way?
The cheapest airline one-way is Allegiant Air, with whom users have recently found tickets for as low as $126. However, be on the lookout for offers from Frontier and Sun Country Air, 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 July is currently the most expensive (average of $405). 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

Top 4 airlines flying from South Dakota to Washington

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$138	Average$223	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$198	Average$393	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$267	Average$562	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$268	Average$492	FlexibilityNo cancel fee	On-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$123+ 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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from South Dakota to Washington with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 April 30, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from South Dakota to Washington

Cheapest flights from South Dakota to WashingtonExplore 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 April 30, 2025.

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 April 30, 2025.

Cheapflights Fare Finder

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

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.

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?

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 April 30, 2025.

Rainfall in Washington by month

Plan your trip to Washington by taking into account the average rainfall totals by month.

Temperature in Washington by month

Plan your trip to Washington by taking into account the average temperature totals by month.

Reviews of airlines servicing Washington

Peruse reviews from past customers who have flown with Alaska Airlines, Delta and United Airlines from South Dakota to Washington to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for South Dakota to Washington

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from South Dakota to Washington

100% Free

Book with Flexibility

Travel Smart

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 April 30, 2025.