FSD - SEA

$155 Find Cheap Flights from Sioux Falls to Seattle - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sioux Falls to Seattle departing on 9/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$250
Typical prices: $318-$520
Frontier
Wed 10/14Sun 10/18
FSD - SEA • 1 stop
Cheapest one-way
$155
Typical prices: $208-$464
Frontier
Fri 9/25
FSD - SEA • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Sioux Falls and Seattle. You'll need at least 1 connection.
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Top layover airports
Dallas (DFW)
Cheapest • Avg $389 (round-trip)
Denver (DEN)
Shortest trip • 6h 21m (one-way)
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When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 43% compared to booking last minute.
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When to travel
January
Cheapest • 27% price drop
August
Most popular
Good to know
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Booking Insights
Flight Deals

Cheap Flights from Sioux Falls to Seattle (FSD-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sioux Falls to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sioux Falls to Seattle

Wed, Oct 14 - Sun, Oct 18
Frontier Logo
7:31 pm - 9:51 amFSD  Sioux Falls Joe Foss Field-SEA Seattle/Tacoma Intl
16h 20m1 stop Denver Intl
Frontier Logo
7:41 pm - 6:36 pmSEA  Seattle/Tacoma Intl-FSD Sioux Falls Joe Foss Field
20h 55m1 stop Denver Intl
$250Frontier
Fri, Oct 9 - Sun, Oct 11
Frontier Logo
7:31 pm - 9:51 amFSD  Sioux Falls Joe Foss Field-SEA Seattle/Tacoma Intl
16h 20m1 stop Denver Intl
Frontier Logo
7:41 pm - 6:36 pmSEA  Seattle/Tacoma Intl-FSD Sioux Falls Joe Foss Field
20h 55m1 stop Denver Intl
$275Frontier
Mon, Oct 12 - Tue, Oct 20
Frontier Logo
7:31 pm - 9:51 amFSD  Sioux Falls Joe Foss Field-SEA Seattle/Tacoma Intl
16h 20m1 stop Denver Intl
Frontier Logo
7:41 pm - 6:36 pmSEA  Seattle/Tacoma Intl-FSD Sioux Falls Joe Foss Field
20h 55m1 stop Denver Intl
$297Frontier
Wed, Nov 4 - Tue, Nov 10
United Airlines Logo
5:06 pm - 9:19 pmFSD  Sioux Falls Joe Foss Field-SEA Seattle/Tacoma Intl
6h 13m1 stop Denver Intl
United Airlines Logo
3:49 pm - 11:44 pmSEA  Seattle/Tacoma Intl-FSD Sioux Falls Joe Foss Field
5h 55m1 stop Denver Intl
$339United Airlines
Wed, Sep 9 - Wed, Sep 16
United Airlines Logo
9:35 am - 3:52 pmFSD  Sioux Falls Joe Foss Field-SEA Seattle/Tacoma Intl
8h 17m1 stop Denver Intl
United Airlines Logo
1:57 pm - 11:12 pmSEA  Seattle/Tacoma Intl-FSD Sioux Falls Joe Foss Field
7h 15m1 stop Chicago O'Hare Intl
$339United Airlines
Wed, Sep 23 - Sun, Sep 27
American Airlines Logo
12:56 pm - 7:48 pmFSD  Sioux Falls Joe Foss Field-SEA Seattle/Tacoma Intl
8h 52m1 stop Dallas/Fort Worth
American Airlines Logo
5:30 am - 5:20 pmSEA  Seattle/Tacoma Intl-FSD Sioux Falls Joe Foss Field
9h 50m1 stop Dallas/Fort Worth
$339American Airlines
Wed, Oct 14 - Wed, Oct 21
American Airlines Logo
12:52 pm - 7:44 pmFSD  Sioux Falls Joe Foss Field-SEA Seattle/Tacoma Intl
8h 52m1 stop Dallas/Fort Worth
American Airlines Logo
3:10 pm - 11:58 pmSEA  Seattle/Tacoma Intl-FSD Sioux Falls Joe Foss Field
6h 48m1 stop Phoenix Sky Harbor Intl
$339American Airlines
Fri, Nov 27 - Sat, Dec 5
Delta Logo
3:50 pm - 8:46 pmFSD  Sioux Falls Joe Foss Field-SEA Seattle/Tacoma Intl
6h 56m1 stop Minneapolis St Paul
Delta Logo
11:47 pm - 10:10 amSEA  Seattle/Tacoma Intl-FSD Sioux Falls Joe Foss Field
8h 23m1 stop Minneapolis St Paul
$339Delta
Tue, Oct 13 - Tue, Oct 20
Delta Logo
5:00 pm - 11:59 pmFSD  Sioux Falls Joe Foss Field-SEA Seattle/Tacoma Intl
8h 59m1 stop Minneapolis St Paul
Delta Logo
11:50 pm - 10:00 amSEA  Seattle/Tacoma Intl-FSD Sioux Falls Joe Foss Field
8h 10m1 stop Minneapolis St Paul
$339Delta
Wed, Oct 28 - Sun, Nov 1
United Airlines Logo
5:06 pm - 11:15 pmFSD  Sioux Falls Joe Foss Field-SEA Seattle/Tacoma Intl
8h 09m1 stop Denver Intl
United Airlines Logo
3:49 pm - 11:44 pmSEA  Seattle/Tacoma Intl-FSD Sioux Falls Joe Foss Field
5h 55m1 stop Denver Intl
$339United Airlines
Booking Insights

KAYAK's insights & trends for Sioux Falls to Seattle flights

Get data-powered insights and trends into flights from Sioux Falls to Seattle to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Sioux Falls to Seattle?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Sioux Falls to Seattle departing in October.

Flight prices are below average for this route right now.

Flights to Seattle from Sioux Falls usually cost between $396 and $514 in October.
The lowest price found in the past 5 days was $250 on Frontier (Oct 14-Oct 18).

What is the cheapest month to fly from Sioux Falls to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sioux Falls to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sioux Falls to Seattle is January, where tickets cost $339 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $713 and $555 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Sioux Falls to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Sioux Falls to Seattle, you should book around 3 weeks before departure, which saves you about 43% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Find deals

Good to know

Low season

January

Cheapest flight

$155
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from Sioux Falls to Seattle

When to book flights from Sioux Falls to Seattle

Are your dates flexible? Find out the best times to travel from Sioux Falls to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Sioux Falls to Seattle

  • What is the cheapest flight from Sioux Falls to Seattle?

    In the last 5 days, the lowest price for a flight from Sioux Falls to Seattle was $155 for a one-way ticket and $250 for a round-trip.

  • Do I need a passport to fly between Sioux Falls and Seattle?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Sioux Falls to Seattle?

    Sioux Falls airport is called Sioux Falls Joe Foss Field and the only airport in Seattle is Seattle/Tacoma Intl.

  • Which aircraft models fly most regularly from Sioux Falls to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Sioux Falls to Seattle?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Sioux Falls and Seattle, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Sioux Falls to Seattle, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Sioux Falls to Seattle are Delta and United Airlines. With an average price for the route of $426 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $495 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Sioux Falls to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sioux Falls to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sioux Falls to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Sioux Falls is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sioux Falls to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Sioux Falls with another airline. Booking your flights between Sioux Falls and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sioux Falls to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Sioux Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Sioux Falls to Seattle

Information on your arrival and departure airports

Sioux Falls (FSD)
Seattle (SEA)