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Cheap flights from Seattle to Sioux Falls from $139

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Sioux Falls departing on 11/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Seattle to Sioux Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:58 pm - 1:42 pmSEA-FSD
22h 44m1 stop
Frontier Logo
2:32 pm - 12:07 pmFSD-SEA
23h 35m1 stop
$139Frontier
Find Deal
Thu, Nov 13 - Mon, Nov 17
Frontier Logo
8:22 pm - 1:42 pmSEA-FSD
15h 20m2 stops
Frontier Logo
2:32 pm - 12:07 pmFSD-SEA
23h 35m1 stop
$227Frontier
Find Deal
Thu, Nov 13 - Mon, Nov 17
American Airlines Logo
12:38 am - 11:06 amSEA-FSD
8h 28m1 stop
American Airlines Logo
5:18 pm - 11:38 pmFSD-SEA
8h 20m1 stop
$269American Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
American Airlines Logo
3:00 pm - 11:39 pmSEA-FSD
6h 39m1 stop
American Airlines Logo
2:25 pm - 8:35 pmFSD-SEA
8h 10m1 stop
$329American Airlines
Find Deal
Thu, Dec 18 - Wed, Jan 7
United Airlines Logo
9:25 am - 11:43 pmSEA-FSD
12h 18m2 stops
United Airlines Logo
5:21 pm - 9:46 pmFSD-SEA
6h 25m1 stop
$354United Airlines
Find Deal
Sat, Dec 6 - Mon, Dec 8
United Airlines Logo
8:36 am - 9:46 pmSEA-FSD
11h 10m2 stops
United Airlines Logo
5:14 pm - 9:33 pmFSD-SEA
6h 19m1 stop
$379United Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 18
Alaska Airlines Logo
12:20 am - 10:28 amSEA-FSD
8h 08m1 stop
Alaska Airlines Logo
2:35 pm - 9:50 pmFSD-SEA
9h 15m1 stop
$489Alaska Airlines
Find Deal
Mon, Nov 10 - Tue, Nov 18
Alaska Airlines Logo
12:20 am - 10:28 amSEA-FSD
8h 08m1 stop
Alaska Airlines Logo
2:35 pm - 10:23 amFSD-SEA
21h 48m2 stops
$494Alaska Airlines
Find Deal
Mon, Nov 10 - Tue, Nov 18
Multiple Airlines Logo
2:22 pm - 1:43 pmSEA-FSD
21h 21m1 stop
Multiple Airlines Logo
12:06 pm - 1:22 pmFSD-SEA
27h 16m1 stop
$687Multiple Airlines
Find Deal
Sun, Nov 2 - Sun, Nov 30
Multiple Airlines Logo
2:22 pm - 1:43 pmSEA-FSD
21h 21m1 stop
Multiple Airlines Logo
12:06 pm - 11:56 amFSD-SEA
25h 50m2 stops
$723Multiple Airlines
Find Deal
Sun, Nov 2 - Sun, Nov 30

United Airlines flights from Seattle to Sioux Falls

Our best United Airlines deals on Seattle to Sioux Falls flight tickets
United Airlines
Dec 6
SEA9:25 amSeattle/Tacoma Intl
12h 18m
2 stops
FSD11:43 pmSioux Falls Joe Foss Field
Dec 8
FSD5:21 pmSioux Falls Joe Foss Field
6h 25m
1 stop
SEA9:46 pmSeattle/Tacoma Intl
$354
Find similar
United Airlines
Nov 11
SEA8:36 amSeattle/Tacoma Intl
11h 10m
2 stops
FSD9:46 pmSioux Falls Joe Foss Field
Nov 18
FSD5:14 pmSioux Falls Joe Foss Field
6h 19m
1 stop
SEA9:33 pmSeattle/Tacoma Intl
$379
Find similar
United Airlines
Nov 13
SEA9:25 amSeattle/Tacoma Intl
12h 19m
2 stops
FSD11:44 pmSioux Falls Joe Foss Field
Nov 17
FSD6:00 amSioux Falls Joe Foss Field
9h 38m
2 stops
SEA1:38 pmSeattle/Tacoma Intl
$387
Find similar

American Airlines flights from Seattle to Sioux Falls

Our best American Airlines deals on Seattle to Sioux Falls flight tickets
American Airlines
Dec 5
SEA12:38 amSeattle/Tacoma Intl
8h 28m
1 stop
FSD11:06 amSioux Falls Joe Foss Field
Dec 8
FSD5:18 pmSioux Falls Joe Foss Field
8h 20m
1 stop
SEA11:38 pmSeattle/Tacoma Intl
$269
Find similar
American Airlines
Dec 18
SEA3:00 pmSeattle/Tacoma Intl
6h 39m
1 stop
FSD11:39 pmSioux Falls Joe Foss Field
Jan 7
FSD2:25 pmSioux Falls Joe Foss Field
8h 10m
1 stop
SEA8:35 pmSeattle/Tacoma Intl
$329
Find similar
American Airlines
Nov 12
SEA12:59 amSeattle/Tacoma Intl
7h 28m
1 stop
FSD10:27 amSioux Falls Joe Foss Field
Nov 17
FSD5:27 pmSioux Falls Joe Foss Field
8h 15m
1 stop
SEA11:42 pmSeattle/Tacoma Intl
$339
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 October 30, 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

Thu 11/13

12:58 pm-1:42 pm

1 stop22h 44m

Sioux Falls Joe Foss Field

Mon 11/17

2:32 pm-12:07 pm

1 stop23h 35m

$139

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 11/13

8:22 pm-1:42 pm

2 stops15h 20m

Sioux Falls Joe Foss Field

Mon 11/17

2:32 pm-12:07 pm

1 stop23h 35m

$227

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Fri 12/5

12:38 am-11:06 am

1 stop8h 28m

Sioux Falls Joe Foss Field

Mon 12/8

5:18 pm-11:38 pm

1 stop8h 20m

$269

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Thu 12/18

3:00 pm-11:39 pm

1 stop6h 39m

Sioux Falls Joe Foss Field

Wed 1/7

2:25 pm-8:35 pm

1 stop8h 10m

$329

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sat 12/6

9:25 am-11:43 pm

2 stops12h 18m

Sioux Falls Joe Foss Field

Mon 12/8

5:21 pm-9:46 pm

1 stop6h 25m

$354

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Tue 11/11

8:36 am-9:46 pm

2 stops11h 10m

Sioux Falls Joe Foss Field

Tue 11/18

5:14 pm-9:33 pm

1 stop6h 19m

$379

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Mon 11/10

12:20 am-10:28 am

1 stop8h 08m

Sioux Falls Joe Foss Field

Tue 11/18

2:35 pm-9:50 pm

1 stop9h 15m

$489

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Mon 11/10

12:20 am-10:28 am

1 stop8h 08m

Sioux Falls Joe Foss Field

Tue 11/18

2:35 pm-10:23 am

2 stops21h 48m

$494

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sun 11/2

2:22 pm-1:43 pm

1 stop21h 21m

Sioux Falls Joe Foss Field

Sun 11/30

12:06 pm-1:22 pm

1 stop27h 16m

$687

SeattleSioux Falls

SEA - FSD

SEAFSD

Seattle/Tacoma Intl

Sun 11/2

2:22 pm-1:43 pm

1 stop21h 21m

Sioux Falls Joe Foss Field

Sun 11/30

12:06 pm-11:56 am

2 stops25h 50m

$723

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 November. Flight prices, which tend to average around $351, are often lower during this time because this is during the off-season. If you’re not able to fly to Sioux Falls in November, 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 $457 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 $336 on momondo.

Can stopping save me money on Seattle to Sioux Falls flights?

You could potentially save up to 58% on your flight if you consider stops on a Seattle to Sioux Falls flight.

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

As of October 2025, prices for Seattle to Sioux Falls flights are approximately 9% 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 18m 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 $188Free CancellationRating
5.8
3,122 reviews
Search Frontier flights
DeltaPriceFrom $268Free CancellationRating
7.9
7,998 reviews
Search Delta flights
American AirlinesPriceFrom $268Free CancellationRating
7.2
11,035 reviews
Search American Airlines flights
United AirlinesPriceFrom $286Free CancellationRating
7.4
8,998 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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