FSD - SEA

$179 Find Cheap Flights from Sioux Falls to Seattle

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 5/20. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux Falls to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux Falls to Seattle, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$196
Overall average: $353
Frontier
Fri 4/24Thu 4/30
FSD - SEA • 1 stop
Cheapest one-way
$179
Typical prices: $330-$468
Frontier
Wed 5/20
FSD - SEA • 2 stops
Top airlines
Cheapest • from $196 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Sioux Falls and Seattle. You'll need at least 1 connection.
Insights
Insights
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Insights
Top layover airports
Cheapest • Avg $393 (round-trip)
Shortest trip • 6h 37m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
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

Fri, Apr 24 - Thu, Apr 30
Frontier Logo
8:06 pm - 9:27 am
FSD
-
SEA
15h 21m
1 stop
Frontier Logo
7:12 pm - 7:21 pm
SEA
-
FSD
22h 09m
1 stop
$196Frontier
Wed, May 20 - Sun, May 24
Frontier Logo
7:18 pm - 10:06 am
FSD
-
SEA
16h 48m
1 stop
Frontier Logo
7:50 pm - 3:44 pm
SEA
-
FSD
17h 54m
1 stop
$281Frontier
Fri, Apr 24 - Sun, Apr 26
Frontier Logo
8:06 pm - 9:27 am
FSD
-
SEA
15h 21m
1 stop
Frontier Logo
4:20 pm - 7:21 pm
SEA
-
FSD
25h 01m
1 stop
$317Frontier
Wed, Apr 29 - Tue, May 5
Multiple Airlines Logo
2:35 pm - 9:27 am
FSD
-
SEA
20h 52m
2 stops
Multiple Airlines Logo
7:50 pm - 6:33 pm
SEA
-
FSD
20h 43m
1 stop
$319Multiple Airlines
Wed, Sep 2 - Thu, Sep 10
American Airlines Logo
12:25 pm - 7:49 pm
FSD
-
SEA
9h 24m
1 stop
American Airlines Logo
10:17 am - 9:55 pm
SEA
-
FSD
9h 38m
1 stop
$349American Airlines
Wed, Apr 15 - Wed, Apr 22
United Airlines Logo
6:00 am - 9:46 am
FSD
-
SEA
5h 46m
1 stop
United Airlines Logo
11:35 am - 11:44 pm
SEA
-
FSD
10h 09m
2 stops
$354United Airlines
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
6:00 am - 9:46 am
FSD
-
SEA
5h 46m
1 stop
United Airlines Logo
7:12 am - 8:30 pm
SEA
-
FSD
11h 18m
2 stops
$370United Airlines
Wed, Apr 8 - Wed, Apr 15
United Airlines Logo
6:10 am - 11:48 am
FSD
-
SEA
7h 38m
1 stop
United Airlines Logo
11:59 pm - 10:42 am
SEA
-
FSD
8h 43m
1 stop
$374United Airlines
Wed, May 20 - Sun, May 24
Frontier Logo
7:18 pm - 10:06 am
FSD
-
SEA
16h 48m
1 stop
Frontier Logo
3:19 pm - 3:44 pm
SEA
-
FSD
22h 25m
1 stop
$376Frontier
Wed, Apr 8 - Wed, Apr 15
United Airlines Logo
6:00 am - 2:46 pm
FSD
-
SEA
10h 46m
2 stops
United Airlines Logo
5:00 am - 12:50 pm
SEA
-
FSD
5h 50m
1 stop
$379United 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.

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 $306 (return) on average. On the other hand, the most expensive months are May and June, where the average cost of round-trip tickets is $566 and $566 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 2 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$179
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 23% lower on average.
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 3 days, the lowest price for a flight from Sioux Falls to Seattle was $179 for a one-way ticket and $196 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 $453 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $505 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.

Reviews of the top 4 airlines serving from Sioux Falls to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Sioux Falls to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sioux Falls to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8314 reviews
8.1Boarding
7.8Entertainment
8.5Crew
7.9Comfort
7.2Food
Airline reviews

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

2.0 MediocreAnonymous, Mar 2026
HNL - ATL
Read more Delta reviews

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

Experience was great - no complaints. Took off on time, landed early. Got to the gate relatively quickly - took a little bit of extra time to deplane but nothing excessive.

Economy plus was so cramped I could not use my laptop. It was beyond bad.

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Both my flight where delayed Had 25min to make it to my transfer flight

Everything was on time and service on the flight was great!

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

Flight was scheduled at 11:26am but they keep Delaying until midnight. They waited at airport restless.

Rough flight No beverage service due to turbulence Bottom Seat cushion was non existent

Great experience. Good dinner and service. FA's were very nice and attentive.

It was great. Smooth flight, comfortable, left on time and landed on time.

We hoarded. Then we deplaned. Then we waited for 10 hours in the MSP airport due to a wheel misfunction. We understand safety but communication between crew and airport staff was horrible. When we did finally board, we were rushed on and because we were waiting for a “fresh” pilot and crew, we sat in a roasting plane with no A/C for an hour. My question is why was this flight not cancelled right away when they knew this would be a huge issue OR, why did AA not get a substitute plane, considering this was already a full flight? To me, this appears to be a complete breakdown in leadership and utter systems failure. The compensation for completely disrupting travel plans for hundreds, which we paid dearly for, was measly. While we appreciated the lodging for the night, $12 in meal vouchers isn’t going to sustain anyone for over 12 hours. “We apologize; our hands are tied” is no longer an acceptable explanation. We are so completely turned off by this experience and will definitely seek alternative avenues when we need to fly.

Mostly good. The WiFi wasn’t working so that was not great.

I rated the experience "mediocre" because of the 2 hour delay in take off. This is the 4th flight from DFW on AA where there was a delay and in one of the instances (after 13 delays), the flight was cancelled. I understand weather but for the March 18th flight, there was no weather issue in Dallas or Detroit. I called Concierge Key and they were wonderful, booking me on a later flight in case my flight was cancelled. I have flown with American for many years and never has there been this consistent pattern of delays. Very disappointing.

They put me on an earlier and I got home sooner

Not good. One of my luggage is missing. And until now they can’t find it

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

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

Information on your arrival and departure airports