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Cheap flights from Seattle to Sioux Falls from $124

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 Sioux Falls departing on 9/8. 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 Sioux Falls

Cheap round-trip flights

United Airlines Logo
5:05 am - 12:51 pmSEA-FSD
5h 46m1 stop
United Airlines Logo
6:00 am - 10:09 amFSD-SEA
6h 09m1 stop
$269United Airlines
Find Deal
Wed, Dec 10 - Sun, Dec 14
American Airlines Logo
12:34 am - 12:03 pmSEA-FSD
9h 29m1 stop
American Airlines Logo
6:49 am - 1:00 pmFSD-SEA
8h 11m1 stop
$270American Airlines
Find Deal
Mon, Oct 6 - Tue, Oct 14
Frontier Logo
6:12 am - 2:09 pmSEA-FSD
5h 57m1 stop
Frontier Logo
2:54 pm - 12:30 amFSD-SEA
11h 36m1 stop
$272Frontier
Find Deal
Mon, Sep 22 - Mon, Sep 29
United Airlines Logo
1:05 pm - 11:43 pmSEA-FSD
8h 38m2 stops
United Airlines Logo
6:00 am - 10:09 amFSD-SEA
6h 09m1 stop
$274United Airlines
Find Deal
Wed, Dec 10 - Sun, Dec 14
United Airlines Logo
1:05 pm - 11:43 pmSEA-FSD
8h 38m2 stops
United Airlines Logo
1:55 pm - 9:00 pmFSD-SEA
9h 05m2 stops
$279United Airlines
Find Deal
Wed, Dec 10 - Mon, Dec 15
Frontier Logo
1:02 pm - 6:33 pmSEA-FSD
27h 31m1 stop
Frontier Logo
2:23 pm - 12:07 pmFSD-SEA
23h 44m1 stop
$284Frontier
Find Deal
Thu, Oct 16 - Sun, Oct 19
Delta Logo
1:45 pm - 10:49 pmSEA-FSD
7h 04m1 stop
Delta Logo
5:15 am - 10:56 amFSD-SEA
7h 41m1 stop
$294Delta
Find Deal
Tue, Dec 9 - Sun, Dec 14
Delta Logo
11:55 pm - 10:05 amSEA-FSD
8h 10m1 stop
Delta Logo
5:15 am - 10:56 amFSD-SEA
7h 41m1 stop
$319Delta
Find Deal
Mon, Dec 8 - Sun, Dec 14
American Airlines Logo
5:26 am - 5:03 pmSEA-FSD
9h 37m1 stop
American Airlines Logo
12:19 pm - 8:09 pmFSD-SEA
9h 50m1 stop
$367American Airlines
Find Deal
Sat, Sep 13 - Sat, Sep 27
Alaska Airlines Logo
12:59 am - 11:49 amSEA-FSD
8h 50m1 stop
Alaska Airlines Logo
12:19 pm - 8:17 pmFSD-SEA
9h 58m1 stop
$447Alaska Airlines
Find Deal
Fri, Sep 12 - Sat, Sep 27

United Airlines flights from Seattle to Sioux Falls

Our best United Airlines deals on Seattle to Sioux Falls flight tickets
United Airlines
Dec 10
SEA5:05 amSeattle/Tacoma Intl
5h 46m
1 stop
FSD12:51 pmSioux Falls Joe Foss Field
Dec 14
FSD6:00 amSioux Falls Joe Foss Field
6h 09m
1 stop
SEA10:09 amSeattle/Tacoma Intl
$269
Find similar
United Airlines
Dec 10
SEA1:05 pmSeattle/Tacoma Intl
8h 38m
2 stops
FSD11:43 pmSioux Falls Joe Foss Field
Dec 14
FSD6:00 amSioux Falls Joe Foss Field
6h 09m
1 stop
SEA10:09 amSeattle/Tacoma Intl
$274
Find similar
United Airlines
Dec 10
SEA1:05 pmSeattle/Tacoma Intl
8h 38m
2 stops
FSD11:43 pmSioux Falls Joe Foss Field
Dec 15
FSD1:55 pmSioux Falls Joe Foss Field
9h 05m
2 stops
SEA9:00 pmSeattle/Tacoma Intl
$279
Find similar

Frontier flights from Seattle to Sioux Falls

Our best Frontier deals on Seattle to Sioux Falls flight tickets
Frontier
Sep 22
SEA6:12 amSeattle/Tacoma Intl
5h 57m
1 stop
FSD2:09 pmSioux Falls Joe Foss Field
Sep 29
FSD2:54 pmSioux Falls Joe Foss Field
11h 36m
1 stop
SEA12:30 amSeattle/Tacoma Intl
$272
Find similar
Frontier
Oct 16
SEA1:02 pmSeattle/Tacoma Intl
27h 31m
1 stop
FSD6:33 pmSioux Falls Joe Foss Field
Oct 19
FSD2:23 pmSioux Falls Joe Foss Field
23h 44m
1 stop
SEA12:07 pmSeattle/Tacoma Intl
$284
Find similar
Frontier
Sep 5
SEA6:12 amSeattle/Tacoma Intl
5h 57m
1 stop
FSD2:09 pmSioux Falls Joe Foss Field
Sep 8
FSD2:54 pmSioux Falls Joe Foss Field
11h 36m
1 stop
SEA12:30 amSeattle/Tacoma Intl
$303
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Sioux Falls 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 August 25, 2025.
Use the filters below to find and compare flights from Seattle to Sioux Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 12/10

5:05 am-12:51 pm

1 stop5h 46m

Sioux Falls Joe Foss Field

Sun 12/14

6:00 am-10:09 am

1 stop6h 09m

$269

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Mon 10/6

12:34 am-12:03 pm

1 stop9h 29m

Sioux Falls Joe Foss Field

Tue 10/14

6:49 am-1:00 pm

1 stop8h 11m

$270

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Mon 9/22

6:12 am-2:09 pm

1 stop5h 57m

Sioux Falls Joe Foss Field

Mon 9/29

2:54 pm-12:30 am

1 stop11h 36m

$272

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 12/10

1:05 pm-11:43 pm

2 stops8h 38m

Sioux Falls Joe Foss Field

Sun 12/14

6:00 am-10:09 am

1 stop6h 09m

$274

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Wed 12/10

1:05 pm-11:43 pm

2 stops8h 38m

Sioux Falls Joe Foss Field

Mon 12/15

1:55 pm-9:00 pm

2 stops9h 05m

$279

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 10/16

1:02 pm-6:33 pm

1 stop27h 31m

Sioux Falls Joe Foss Field

Sun 10/19

2:23 pm-12:07 pm

1 stop23h 44m

$284

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Tue 12/9

1:45 pm-10:49 pm

1 stop7h 04m

Sioux Falls Joe Foss Field

Sun 12/14

5:15 am-10:56 am

1 stop7h 41m

$294

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Mon 12/8

11:55 pm-10:05 am

1 stop8h 10m

Sioux Falls Joe Foss Field

Sun 12/14

5:15 am-10:56 am

1 stop7h 41m

$319

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sat 9/13

5:26 am-5:03 pm

1 stop9h 37m

Sioux Falls Joe Foss Field

Sat 9/27

12:19 pm-8:09 pm

1 stop9h 50m

$367

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Fri 9/12

12:59 am-11:49 am

1 stop8h 50m

Sioux Falls Joe Foss Field

Sat 9/27

12:19 pm-8:17 pm

1 stop9h 58m

$447

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 Sioux Falls from

How to get the cheapest flight ticket from Seattle to Sioux Falls

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 Sioux Falls?

The cheapest month to fly to Sioux Falls from Seattle is in October. Flight prices, which tend to average around $298, are often lower during this time because this is during the off-season. If you’re not able to fly to Sioux Falls in October, then January is your next best option. Flight prices from Seattle to Sioux Falls during January average around $377.

What is the cheapest day to depart on your flight to Sioux Falls?

The cheapest day to depart on your flight to Sioux Falls is on a Saturday when prices can be found for as low as $507. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $643.

What is the cheapest time of day to depart on your flight to Sioux Falls?

Our most recent data shows that the best time of day to fly to Sioux Falls is in the evening. Flights from Seattle to Sioux Falls during this time can be as low as $318. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $703 on average. Flights to Sioux Falls from Seattle in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Sioux Falls?

You are more likely to see cheaper flights to Sioux Falls from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Sioux Falls for around $468 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sioux Falls from Seattle for as low as $331 on momondo.

How have Seattle to Sioux Falls flight prices changed over time?

As of August 2025, prices for Seattle to Sioux Falls flights are approximately 17% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Sioux Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Sioux Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Sioux Falls (SEA to FSD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Sioux Falls

Direct flights

None
There are no direct flights from Seattle to Sioux Falls. There are no popular flight routes from Seattle to Sioux Falls.
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  • How far is Seattle/Tacoma Intl to Sioux Falls Joe Foss Field by plane?

    A flight from Seattle/Tacoma Intl to Sioux Falls Joe Foss Field will travel around 1262.9 mi. 5h 43m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Sioux Falls Joe Foss Field Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Sioux Falls Joe Foss Field Airport refresh daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Sioux Falls Joe Foss Field Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Sioux Falls Joe Foss Field Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Sioux Falls Joe Foss Field Airport.

  • What documentation or ID do you need to fly to Sioux Falls Joe Foss Field Airport?

    The travel and health documents required for your trip to Sioux Falls Joe Foss Field Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sioux Falls Joe Foss Field Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Seattle to Sioux Falls?

Best airlines flying from Seattle to Sioux Falls

Compare and see reviews for airlines that fly from Seattle to Sioux Falls with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $128Free CancellationRating
5.8
3,201 reviews
Search Frontier flights
DeltaPriceFrom $268Free CancellationRating
7.9
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $268Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $348Free CancellationRating
7.4
8,940 reviews
Search United Airlines flights

Traveling to a place near Sioux Falls?

Book flights to Sioux Falls if you plan to visit one of these locations
Yankton
Marshall
Worthington

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Sioux Falls?

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 Seattle to Sioux Falls for you.

Can I find flights from Seattle to Sioux Falls with flexible booking policies on momondo?

All flight searches from Seattle to Sioux Falls on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Sioux Falls?

Once all potential Seattle to Sioux Falls flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from Seattle to Sioux Falls now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sioux Falls and let you know when they change.

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