What is the cheapest airline that flies from Seattle/Tacoma Intl to South Dakota?

Frontier, Delta, and American Airlines are the most popular carriers operating from Seattle/Tacoma Intl to South Dakota

What airlines fly to South Dakota?

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to South Dakota from Seattle according to our data. United Airlines is the first choice among our users, with 56% of people opting to fly with this airline when traveling to South Dakota. Keep in mind that there are 4 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 Seattle/Tacoma Intl Airport to South Dakota?

Prices for flights from Seattle/Tacoma Intl Airport to South Dakota refresh daily.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to South Dakota?

There are 4 operators available for flights from Seattle/Tacoma Intl Airport to South Dakota as of May 2026.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to South Dakota?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to South Dakota.

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

The necessary travel and health documents for your South Dakota trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$144 Cheap Flights from Seattle to South Dakota in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Seattle to South Dakota

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:41 pm - 7:19 pm

SEA

FSD

21h 38m

1 stop

8:14 pm - 9:48 am

FSD

SEA

15h 34m

1 stop

$278Frontier

Thu, Jun 18 - Mon, Jun 22

7:41 pm - 7:23 pm

SEA

FSD

21h 42m

1 stop

8:14 pm - 9:49 am

FSD

SEA

15h 35m

1 stop

$299Frontier

Tue, Jul 28 - Mon, Aug 3

7:50 pm - 3:40 pm

SEA

FSD

17h 50m

1 stop

7:18 pm - 10:06 am

FSD

SEA

16h 48m

1 stop

$300Frontier

Sun, May 31 - Wed, Jun 3

5:00 am - 12:25 pm

SEA

RAP

6h 25m

1 stop

10:26 am - 3:51 pm

RAP

SEA

6h 25m

1 stop

$319United Airlines

Thu, Sep 24 - Wed, Sep 30

5:10 am - 4:55 pm

SEA

FSD

9h 45m

1 stop

4:40 pm - 12:41 am

FSD

SEA

10h 01m

1 stop

$329American Airlines

Tue, Jun 16 - Tue, Jun 23

12:44 pm - 8:02 pm

SEA

FSD

5h 18m

1 stop

11:25 am - 6:29 pm

FSD

SEA

9h 04m

2 stops

$334United Airlines

Wed, Oct 7 - Wed, Oct 14

6:05 am - 3:10 pm

SEA

RAP

8h 05m

1 stop

4:00 pm - 11:26 pm

RAP

SEA

8h 26m

1 stop

$339Delta

Fri, Sep 25 - Thu, Oct 1

11:53 pm - 9:58 am

SEA

RAP

9h 05m

1 stop

4:00 pm - 11:59 pm

RAP

SEA

8h 59m

1 stop

$344Delta

Sat, Oct 3 - Wed, Oct 7

5:05 am - 4:20 pm

SEA

RAP

10h 15m

1 stop

4:55 pm - 12:57 am

RAP

SEA

9h 02m

1 stop

$350American Airlines

Wed, Jul 15 - Tue, Jul 21

8:13 pm - 9:10 pm

SEA

FSD

22h 57m

1 stop

1:50 pm - 10:35 am

FSD

SEA

22h 45m

2 stops

$357Multiple Airlines

Wed, Aug 19 - Wed, Aug 26

American Airlines flights from Seattle to South Dakota

Our best American Airlines deals on Seattle to South Dakota flight tickets

American Airlines

Jun 16

SEA5:10 amSeattle/Tacoma Intl

9h 45m

1 stop

FSD4:55 pmSioux Falls Joe Foss Field

Jun 23

FSD4:40 pmSioux Falls Joe Foss Field

10h 01m

1 stop

SEA12:41 amSeattle/Tacoma Intl

$329

American Airlines

Jul 15

SEA5:05 amSeattle/Tacoma Intl

10h 15m

1 stop

RAP4:20 pmRapid City

Jul 21

RAP4:55 pmRapid City

9h 02m

1 stop

SEA12:57 amSeattle/Tacoma Intl

$350

American Airlines

Jul 15

SEA5:05 amSeattle/Tacoma Intl

10h 15m

1 stop

RAP4:20 pmRapid City

Jul 21

RAP4:55 pmRapid City

9h 02m

1 stop

SEA12:57 amSeattle/Tacoma Intl

$360

Delta flights from Seattle to South Dakota

Our best Delta deals on Seattle to South Dakota flight tickets

Delta

Sep 25

SEA6:05 amSeattle/Tacoma Intl

8h 05m

1 stop

RAP3:10 pmRapid City

Oct 1

RAP4:00 pmRapid City

8h 26m

1 stop

SEA11:26 pmSeattle/Tacoma Intl

$339

Delta

Oct 3

SEA11:53 pmSeattle/Tacoma Intl

9h 05m

1 stop

RAP9:58 amRapid City

Oct 7

RAP4:00 pmRapid City

8h 59m

1 stop

SEA11:59 pmSeattle/Tacoma Intl

$344

Delta

Sep 18

SEA1:45 pmSeattle/Tacoma Intl

7h 01m

1 stop

FSD10:46 pmSioux Falls Joe Foss Field

Sep 22

FSD4:09 pmSioux Falls Joe Foss Field

6h 15m

1 stop

SEA8:24 pmSeattle/Tacoma Intl

$349

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 6/18

7:41 pm-7:19 pm

1 stop21h 38m

Sioux Falls Joe Foss Field

Mon 6/22

8:14 pm-9:48 am

1 stop15h 34m

$278

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Tue 7/28

7:41 pm-7:23 pm

1 stop21h 42m

Sioux Falls Joe Foss Field

Mon 8/3

8:14 pm-9:49 am

1 stop15h 35m

$299

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sun 5/31

7:50 pm-3:40 pm

1 stop17h 50m

Sioux Falls Joe Foss Field

Wed 6/3

7:18 pm-10:06 am

1 stop16h 48m

$300

Quickest round-trip

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Thu 9/24

5:00 am-12:25 pm

1 stop6h 25m

Rapid City

Wed 9/30

10:26 am-3:51 pm

1 stop6h 25m

$319

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Tue 6/16

5:10 am-4:55 pm

1 stop9h 45m

Sioux Falls Joe Foss Field

Tue 6/23

4:40 pm-12:41 am

1 stop10h 01m

$329

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 10/7

12:44 pm-8:02 pm

1 stop5h 18m

Sioux Falls Joe Foss Field

Wed 10/14

11:25 am-6:29 pm

2 stops9h 04m

$334

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Fri 9/25

6:05 am-3:10 pm

1 stop8h 05m

Rapid City

Thu 10/1

4:00 pm-11:26 pm

1 stop8h 26m

$339

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Sat 10/3

11:53 pm-9:58 am

1 stop9h 05m

Rapid City

Wed 10/7

4:00 pm-11:59 pm

1 stop8h 59m

$344

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Wed 7/15

5:05 am-4:20 pm

1 stop10h 15m

Rapid City

Tue 7/21

4:55 pm-12:57 am

1 stop9h 02m

$350

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 8/19

8:13 pm-9:10 pm

1 stop22h 57m

Sioux Falls Joe Foss Field

Wed 8/26

1:50 pm-10:35 am

2 stops22h 45m

$357

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 Seattle 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

What is the cheapest month to fly to South Dakota?

The month of June is, on average, the cheapest month to fly to South Dakota from Seattle, with most prices found around $123. If you aren’t able to travel to South Dakota during the month of June, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $190.

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

You are more likely to see cheaper flights to South Dakota from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to South Dakota for around $457 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Dakota from Seattle for as low as $367 on momondo.

Can stopping save me money on Seattle to South Dakota flights?

You could potentially save up to 16% on your flight if you consider stops on a Seattle to South Dakota flight.

Cheap Seattle to South Dakota flight deals and tips

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

Fastest flight time	4h 57m
Direct flights	None

The fastest flight from Seattle to South Dakota takes 4h 57m

There are no direct flights from Seattle to South Dakota. There are no popular flight routes from Seattle to South Dakota.

Search flight deals

Frequently asked questions about flying from Seattle to South Dakota

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to South Dakota?
Prices for flights from Seattle/Tacoma Intl Airport to South Dakota refresh daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to South Dakota?
There are 4 operators available for flights from Seattle/Tacoma Intl Airport to South Dakota as of May 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to South Dakota?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to South Dakota.
What documentation or ID do you need to fly to South Dakota?
The necessary travel and health documents for your South Dakota trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Seattle to South Dakota

Compare and see reviews for airlines that fly from Seattle to South Dakota with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $188	Free Cancellation	Rating 5.6 2,945 reviews	Search Frontier flights
Delta	PriceFrom $190	Free Cancellation	Rating 7.9 8,452 reviews	Search Delta flights
American Airlines	PriceFrom $268	Free Cancellation	Rating 7.1 11,642 reviews	Search American Airlines flights
United Airlines	PriceFrom $286	Free Cancellation	Rating 7.4 9,738 reviews	Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Seattle to South Dakota flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to South Dakota that suits you.

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

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

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

Once you have performed a search for Seattle to South Dakota flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to South Dakota from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.