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Cheap flights from Seattle to South Dakota from $121

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to South Dakota departing on 1/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to South Dakota

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:51 am - 9:20 pm
SEA
-
RAP
9h 29m1 stop
Multiple Airlines Logo
10:10 pm - 9:36 am
RAP
-
SEA
12h 26m1 stop
$248Multiple Airlines
Sun, Jan 18 - Thu, Jan 22
Delta Logo
6:05 am - 3:25 pm
SEA
-
RAP
8h 20m1 stop
Delta Logo
10:54 am - 4:45 pm
RAP
-
SEA
6h 51m1 stop
$279Delta
Thu, Jan 8 - Wed, Jan 14
Delta Logo
3:35 pm - 10:28 pm
SEA
-
RAP
5h 53m1 stop
Delta Logo
10:54 am - 6:29 pm
RAP
-
SEA
8h 35m2 stops
$284Delta
Thu, Jan 8 - Wed, Jan 14
Delta Logo
3:35 pm - 11:04 pm
SEA
-
FSD
5h 29m1 stop
Delta Logo
10:50 am - 2:45 pm
FSD
-
SEA
5h 55m1 stop
$284Delta
Wed, Jan 7 - Sat, Jan 17
United Airlines Logo
10:58 am - 9:50 pm
SEA
-
FSD
8h 52m1 stop
United Airlines Logo
6:00 am - 9:55 am
FSD
-
SEA
5h 55m1 stop
$285United Airlines
Thu, Jan 15 - Thu, Jan 22
Delta Logo
6:05 am - 3:25 pm
SEA
-
RAP
8h 20m1 stop
Delta Logo
6:00 am - 8:48 pm
RAP
-
SEA
15h 48m2 stops
$287Delta
Sat, Jan 17 - Tue, Jan 20
American Airlines Logo
12:59 am - 12:41 pm
SEA
-
FSD
9h 42m1 stop
American Airlines Logo
1:26 pm - 9:16 pm
FSD
-
SEA
9h 50m1 stop
$289American Airlines
Tue, Mar 10 - Wed, Mar 18
Delta Logo
1:38 pm - 10:28 pm
SEA
-
RAP
7h 50m2 stops
Delta Logo
10:54 am - 6:29 pm
RAP
-
SEA
8h 35m2 stops
$289Delta
Tue, Jan 20 - Mon, Jan 26
United Airlines Logo
10:58 am - 9:50 pm
SEA
-
FSD
8h 52m1 stop
United Airlines Logo
7:30 am - 6:26 pm
FSD
-
SEA
12h 56m2 stops
$290United Airlines
Thu, Jan 15 - Thu, Jan 22
American Airlines Logo
5:44 am - 4:45 pm
SEA
-
FSD
9h 01m1 stop
American Airlines Logo
5:46 pm - 10:54 pm
FSD
-
SEA
7h 08m1 stop
$314American Airlines
Wed, May 27 - Mon, Jun 1

American Airlines flights from Seattle to South Dakota

Our best American Airlines deals on Seattle 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
Dec 30
SEA10:32 amSeattle/Tacoma Intl
8h 45m
1 stop
FSD9:17 pmSioux Falls Joe Foss Field
Jan 6
FSD2:25 pmSioux Falls Joe Foss Field
8h 10m
1 stop
SEA8:35 pmSeattle/Tacoma Intl
$374
Find similar
American Airlines
Dec 30
SEA12:14 amSeattle/Tacoma Intl
7h 57m
1 stop
FSD10:11 amSioux Falls Joe Foss Field
Jan 4
FSD8:11 amSioux Falls Joe Foss Field
8h 00m
1 stop
SEA2:11 pmSeattle/Tacoma Intl
$587
Find similar

Alaska Airlines flights from Seattle to South Dakota

Our best Alaska Airlines deals on Seattle to South Dakota flight tickets
Alaska Airlines
Feb 6
SEA8:30 amSeattle/Tacoma Intl
7h 15m
1 stop
FSD5:45 pmSioux Falls Joe Foss Field
Feb 8
FSD12:26 pmSioux Falls Joe Foss Field
7h 56m
1 stop
SEA6:22 pmSeattle/Tacoma Intl
$369
Find similar
Alaska Airlines
Dec 23
SEA9:41 amSeattle/Tacoma Intl
12h 18m
2 stops
FSD11:59 pmSioux Falls Joe Foss Field
Dec 25
FSD8:11 amSioux Falls Joe Foss Field
9h 10m
1 stop
SEA3:21 pmSeattle/Tacoma Intl
$762
Find similar
Alaska Airlines
Dec 22
SEA6:09 pmSeattle/Tacoma Intl
22h 40m
2 stops
FSD6:49 pmSioux Falls Joe Foss Field
Jan 2
FSD10:41 amSioux Falls Joe Foss Field
16h 00m
2 stops
SEA12:41 amSeattle/Tacoma Intl
$831
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 18, 2025.
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

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

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Thu 1/8

6:05 am-3:25 pm

1 stop8h 20m

Rapid City

Wed 1/14

10:54 am-4:45 pm

1 stop6h 51m

$279

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Thu 1/8

3:35 pm-10:28 pm

1 stop5h 53m

Rapid City

Wed 1/14

10:54 am-6:29 pm

2 stops8h 35m

$284

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 1/7

3:35 pm-11:04 pm

1 stop5h 29m

Sioux Falls Joe Foss Field

Sat 1/17

10:50 am-2:45 pm

1 stop5h 55m

$284

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 1/15

10:58 am-9:50 pm

1 stop8h 52m

Sioux Falls Joe Foss Field

Thu 1/22

6:00 am-9:55 am

1 stop5h 55m

$285

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Sat 1/17

6:05 am-3:25 pm

1 stop8h 20m

Rapid City

Tue 1/20

6:00 am-8:48 pm

2 stops15h 48m

$287

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

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Tue 1/20

1:38 pm-10:28 pm

2 stops7h 50m

Rapid City

Mon 1/26

10:54 am-6:29 pm

2 stops8h 35m

$289

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 1/15

10:58 am-9:50 pm

1 stop8h 52m

Sioux Falls Joe Foss Field

Thu 1/22

7:30 am-6:26 pm

2 stops12h 56m

$290

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 5/27

5:44 am-4:45 pm

1 stop9h 01m

Sioux Falls Joe Foss Field

Mon 6/1

5:46 pm-10:54 pm

1 stop7h 08m

$314

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to South Dakota from

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

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 Seattle, 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 Seattle 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 Seattle 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 Seattle for as low as $328 on momondo.

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

You could potentially save up to 29% 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

5h 05m

Direct flights

None
The fastest flight from Seattle to South Dakota takes 5h 05m
There are no direct flights from Seattle to South Dakota. There are no popular flight routes from Seattle to South Dakota.
Search flight deals

  • 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?

  • 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
Sun Country AirPriceFrom $137Free CancellationRating
6.9
333 reviews
Search Sun Country Air flights
FrontierPriceFrom $188Free CancellationRating
5.8
3,082 reviews
Search Frontier flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,053 reviews
Search American Airlines flights
DeltaPriceFrom $258Free CancellationRating
7.9
8,006 reviews
Search Delta flights
United AirlinesPriceFrom $286Free CancellationRating
7.4
9,092 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.

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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Sat 1/17
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Find better results for your trip to South Dakota

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