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Cheap flights from Sioux Falls to Seattle from $120

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sioux Falls to Seattle departing on 9/25. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Sioux Falls to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:56 pm - 9:19 am
FSD
-
SEA
14h 23m
1 stop
Frontier Logo
7:06 pm - 8:01 pm
SEA
-
FSD
22h 55m
1 stop
$265Frontier
Mon, Aug 24 - Sun, Aug 30
Multiple Airlines Logo
8:52 pm - 3:08 pm
FSD
-
SEA
20h 16m
1 stop
Multiple Airlines Logo
9:45 pm - 11:26 am
SEA
-
FSD
11h 41m
1 stop
$275Multiple Airlines
Fri, Sep 25 - Sat, Oct 3
Frontier Logo
7:31 pm - 9:51 am
FSD
-
SEA
16h 20m
1 stop
Frontier Logo
7:41 pm - 6:36 pm
SEA
-
FSD
20h 55m
1 stop
$276Frontier
Fri, Oct 9 - Sun, Oct 11
Multiple Airlines Logo
8:52 pm - 8:30 pm
FSD
-
SEA
25h 38m
2 stops
Multiple Airlines Logo
9:45 pm - 11:26 am
SEA
-
FSD
11h 41m
1 stop
$299Multiple Airlines
Fri, Sep 25 - Sat, Oct 3
United Airlines Logo
5:05 pm - 11:04 pm
FSD
-
SEA
7h 59m
1 stop
United Airlines Logo
1:56 pm - 11:11 pm
SEA
-
FSD
7h 15m
1 stop
$339United Airlines
Wed, Sep 2 - Thu, Sep 24
United Airlines Logo
5:55 am - 9:47 am
FSD
-
SEA
5h 52m
1 stop
United Airlines Logo
2:30 pm - 11:19 pm
SEA
-
FSD
6h 49m
1 stop
$339United Airlines
Tue, Nov 10 - Tue, Nov 17
American Airlines Logo
12:57 pm - 6:47 pm
FSD
-
SEA
7h 50m
1 stop
American Airlines Logo
5:30 am - 5:20 pm
SEA
-
FSD
9h 50m
1 stop
$339American Airlines
Tue, Sep 8 - Sat, Sep 12
American Airlines Logo
12:57 pm - 6:47 pm
FSD
-
SEA
7h 50m
1 stop
American Airlines Logo
5:30 am - 5:20 pm
SEA
-
FSD
9h 50m
1 stop
$339American Airlines
Tue, Sep 8 - Tue, Sep 15
Delta Logo
4:28 pm - 8:36 pm
FSD
-
SEA
6h 08m
1 stop
Delta Logo
6:00 am - 3:46 pm
SEA
-
FSD
7h 46m
1 stop
$359Delta
Tue, Sep 22 - Tue, Sep 29
Delta Logo
4:28 pm - 8:36 pm
FSD
-
SEA
6h 08m
1 stop
Delta Logo
11:59 pm - 10:19 am
SEA
-
FSD
8h 20m
1 stop
$359Delta
Tue, Sep 22 - Mon, Sep 28

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American Airlines flights from Sioux Falls to Seattle

Our best American Airlines deals on Sioux Falls to Seattle flight tickets
American Airlines
Sep 23
FSD2:10 pmSioux Falls Joe Foss Field
8h 19m
1 stop
SEA8:29 pmSeattle/Tacoma Intl
Sep 27
SEA5:30 amSeattle/Tacoma Intl
9h 50m
1 stop
FSD5:20 pmSioux Falls Joe Foss Field
$339
American Airlines
Sep 19
FSD2:10 pmSioux Falls Joe Foss Field
8h 19m
1 stop
SEA8:29 pmSeattle/Tacoma Intl
Sep 30
SEA7:51 amSeattle/Tacoma Intl
7h 29m
1 stop
FSD5:20 pmSioux Falls Joe Foss Field
$345
American Airlines
Aug 17
FSD8:30 amSioux Falls Joe Foss Field
7h 58m
1 stop
SEA2:28 pmSeattle/Tacoma Intl
Aug 22
SEA3:08 pmSeattle/Tacoma Intl
6h 40m
1 stop
FSD11:48 pmSioux Falls Joe Foss Field
$374

Frontier flights from Sioux Falls to Seattle

Our best Frontier deals on Sioux Falls to Seattle flight tickets
Frontier
Aug 24
FSD8:56 pmSioux Falls Joe Foss Field
14h 23m
1 stop
SEA9:19 amSeattle/Tacoma Intl
Aug 30
SEA7:06 pmSeattle/Tacoma Intl
22h 55m
1 stop
FSD8:01 pmSioux Falls Joe Foss Field
$265
Frontier
Oct 9
FSD7:31 pmSioux Falls Joe Foss Field
16h 20m
1 stop
SEA9:51 amSeattle/Tacoma Intl
Oct 11
SEA7:41 pmSeattle/Tacoma Intl
20h 55m
1 stop
FSD6:36 pmSioux Falls Joe Foss Field
$276
Frontier
Aug 24
FSD8:56 pmSioux Falls Joe Foss Field
14h 23m
1 stop
SEA9:19 amSeattle/Tacoma Intl
Aug 30
SEA9:29 pmSeattle/Tacoma Intl
20h 32m
2 stops
FSD8:01 pmSioux Falls Joe Foss Field
$307

momondo Fare Finder

 
Customize your flight search to find flights from Sioux Falls to Seattle 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 July 29, 2026.
Use the filters below to find and compare flights from Sioux Falls to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Mon 8/24

8:56 pm-9:19 am

1 stop14h 23m

Seattle/Tacoma Intl

Sun 8/30

7:06 pm-8:01 pm

1 stop22h 55m

$265

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Fri 9/25

8:52 pm-3:08 pm

1 stop20h 16m

Seattle/Tacoma Intl

Sat 10/3

9:45 pm-11:26 am

1 stop11h 41m

$275

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Fri 10/9

7:31 pm-9:51 am

1 stop16h 20m

Seattle/Tacoma Intl

Sun 10/11

7:41 pm-6:36 pm

1 stop20h 55m

$276

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Fri 9/25

8:52 pm-8:30 pm

2 stops25h 38m

Seattle/Tacoma Intl

Sat 10/3

9:45 pm-11:26 am

1 stop11h 41m

$299

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Wed 9/2

5:05 pm-11:04 pm

1 stop7h 59m

Seattle/Tacoma Intl

Thu 9/24

1:56 pm-11:11 pm

1 stop7h 15m

$339
Quickest round-trip

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Tue 11/10

5:55 am-9:47 am

1 stop5h 52m

Seattle/Tacoma Intl

Tue 11/17

2:30 pm-11:19 pm

1 stop6h 49m

$339

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Tue 9/8

12:57 pm-6:47 pm

1 stop7h 50m

Seattle/Tacoma Intl

Sat 9/12

5:30 am-5:20 pm

1 stop9h 50m

$339

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Tue 9/8

12:57 pm-6:47 pm

1 stop7h 50m

Seattle/Tacoma Intl

Tue 9/15

5:30 am-5:20 pm

1 stop9h 50m

$339

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Tue 9/22

4:28 pm-8:36 pm

1 stop6h 08m

Seattle/Tacoma Intl

Tue 9/29

6:00 am-3:46 pm

1 stop7h 46m

$359

Sioux FallsSeattle

FSD - SEA

FSDSEA

Sioux Falls Joe Foss Field

Tue 9/22

4:28 pm-8:36 pm

1 stop6h 08m

Seattle/Tacoma Intl

Mon 9/28

11:59 pm-10:19 am

1 stop8h 20m

$359

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 Seattle from

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

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 typical price of a round-trip flight between Sioux Falls and Seattle?

Prices are currently low for flights on this route.

Typical prices usually range from $368 to $514.
The lowest price recently found on this route was $265.

What is the cheapest month to fly to Seattle?

In general, January is the cheapest month to fly from Sioux Falls to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $339. If you don’t want to visit Seattle in January, then you should wait until April to fly from Sioux Falls, when ticket prices are also cheap, with an average price of $358.

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

You are more likely to see cheaper flights to Seattle from Sioux Falls when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $452 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Sioux Falls for as low as $330 on momondo.

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

As of July 2026, prices for Sioux Falls to Seattle flights are approximately 73% more expensive when compared to flights at the same time last year.

When to book flights from Sioux Falls to Seattle

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

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

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

Fastest flight time

5h 45m

Direct flights

None
The fastest flight from Sioux Falls to Seattle takes 5h 45m
There are no direct flights from Sioux Falls to Seattle. There are no popular flight routes from Sioux Falls to Seattle.
Search flight deals

Frequently asked questions about flying from Sioux Falls to Seattle

  • How far is Sioux Falls Joe Foss Field to Seattle/Tacoma Intl by plane?

    The straight-line distance from Sioux Falls Joe Foss Field to Seattle/Tacoma Intl is 1262.9 mi. By plane, this route typically takes 5h 45m.

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

    Prices for flights from Sioux Falls Joe Foss Field Airport to Seattle/Tacoma Intl Airport were last updated today.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sioux Falls Joe Foss Field Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport 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.

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

Best airlines flying from Sioux Falls to Seattle

Compare and see reviews for airlines that fly from Sioux Falls to Seattle with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $156Free CancellationRating
5.6
2,748 reviews
Search Frontier flights
DeltaPriceFrom $228Free CancellationRating
7.8
8,489 reviews
Search Delta flights
American AirlinesPriceFrom $268Free CancellationRating
7.1
11,842 reviews
Search American Airlines flights
United AirlinesPriceFrom $288Free CancellationRating
7.4
10,047 reviews
Search United Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Kent
Lynnwood
Redmond
Lakewood
Puyallup
Tukwila
Federal Way
Fife
Cle Elum
Marysville
Kirkland
Centralia
Shoreline
Lacey

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Sioux Falls to Seattle. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Seattle from Sioux Falls which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Sioux Falls.

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

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

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