FSD - SEA

$136 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 1/15. 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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Everything you should know

Cheapest round-trip
$289
Overall average: $378
American Airlines
Wed 1/21Sat 2/7
FSD - SEA • 1 stop
Cheapest one-way
$136
Typical prices: $276-$334
Multiple Airlines
Thu 1/15
FSD - SEA • 1 stop
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 21% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Wed, Jan 21 - Sat, Feb 7
American Airlines Logo
6:00 am - 1:08 pm
FSD
-
SEA
9h 08m1 stop
American Airlines Logo
6:00 am - 4:53 pm
SEA
-
FSD
8h 53m1 stop
$289American Airlines
Thu, Feb 5 - Sat, Feb 7
United Airlines Logo
7:30 am - 4:01 pm
FSD
-
SEA
10h 31m1 stop
United Airlines Logo
9:25 am - 9:50 pm
SEA
-
FSD
10h 25m2 stops
$294United Airlines
Sat, Feb 14 - Tue, Feb 17
United Airlines Logo
3:15 pm - 10:43 pm
FSD
-
SEA
9h 28m1 stop
United Airlines Logo
7:00 am - 5:21 pm
SEA
-
FSD
8h 21m1 stop
$301United Airlines
Thu, Mar 26 - Tue, Mar 31
American Airlines Logo
5:19 pm - 12:55 am
FSD
-
SEA
9h 36m1 stop
American Airlines Logo
7:15 am - 7:10 pm
SEA
-
FSD
9h 55m1 stop
$314American Airlines
Thu, Feb 12 - Sun, Feb 15
Multiple Airlines Logo
2:16 pm - 10:55 am
FSD
-
SEA
22h 39m1 stop
Multiple Airlines Logo
9:23 pm - 11:55 am
SEA
-
FSD
12h 32m1 stop
$315Multiple Airlines
Sat, Jan 10 - Wed, Jan 14
American Airlines Logo
2:25 pm - 8:35 pm
FSD
-
SEA
8h 10m1 stop
American Airlines Logo
11:55 am - 10:16 pm
SEA
-
FSD
8h 21m1 stop
$339American Airlines
Sat, Jan 17 - Fri, Jan 23
United Airlines Logo
11:22 am - 6:14 pm
FSD
-
SEA
8h 52m1 stop
United Airlines Logo
3:30 pm - 11:44 pm
SEA
-
FSD
6h 14m1 stop
$346United Airlines
Thu, Feb 19 - Tue, Feb 24
United Airlines Logo
5:00 pm - 10:59 pm
FSD
-
SEA
7h 59m1 stop
United Airlines Logo
5:00 am - 5:21 pm
SEA
-
FSD
10h 21m2 stops
$347United Airlines
Sat, Jan 17 - Fri, Jan 23
United Airlines Logo
9:00 am - 6:28 pm
FSD
-
SEA
11h 28m2 stops
United Airlines Logo
5:00 am - 12:58 pm
SEA
-
FSD
5h 58m1 stop
$351United Airlines
Sat, Feb 14 - Tue, Feb 17
United Airlines Logo
11:21 am - 9:12 pm
FSD
-
SEA
11h 51m2 stops
United Airlines Logo
7:00 am - 5:21 pm
SEA
-
FSD
8h 21m1 stop
$359United 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 August, where tickets cost $321 (return) on average. On the other hand, the most expensive months are June and March, where the average cost of round-trip tickets is $571 and $560 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 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$136
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 17% 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 $136 for a one-way ticket and $289 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?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Sioux Falls and Seattle, with oneworld 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 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $509 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 8018 reviews
7.3Food
8.1Boarding
7.9Entertainment
7.9Comfort
8.5Crew
Airline reviews

Did not realize internet screen was hidden between seats and no info printed!!!!

6.0 GoodAnonymous, Dec 2025
BOS - MSP
Read more Delta reviews

Did not realize internet screen was hidden between seats and no info printed!!!!

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Very good flight crew and very nice people staff were incredible especially the gate agent

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

The flight was delayed for about 2 hrs. Other than it, it was good.

Advertised fruit trays with cheese, but only snacks handed out!

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

Flight delays both to Detroits and return flight . The flight to Detroit was associated with mechanical difficulty

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

Wasn't a Delta issue I don't think, but seems there was a Delta flight at each of the 2 Dallas airports at the same exact time, both to Atlanta. I was evidently booked on the one at Love Airport, but the Carey transport shuttle took me to DFW instead and I ended up missing the flight by just a few minutes. Was able to book a Southwest flight from Love Airport, but was a big loss of time and an inconvenience.

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Great flight. On time boarding. Smooth flight and on time arrival at EWR. The flight crew was marvelous and there was a great selection of movies on the entertainment system. Our bags were at the carousel before we got there. Another excellent flight from United.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

They did the one thing that really matters - got to Chicago early.

I liked the snacks and the flight attendants were friendly.

Very turbulent trip made it pretty bearable, plus the lack of refreshments served and the lack of any air conditioning before takeoff which took an hour or more.

Flight was late - I was downgraded from first class to coach

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

We were 4+ hours delayed. AA is absolutely obnoxious. They just kept pushing back the time to the point where we did not get into Vegas until after midnight when we were supposed to arrive like 845pm.

My last flight on 25 Dec, it’s Christmas Day, everyone happy and very good mood. I really enjoy traveling with Americans Airlines from Miami to Minneapolis my home town after long flight from lhe to Doha then Miami. Thank you again to make my travels comfortable and relaxed. Best regards

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

WiFi didn’t work the entire flight. Very disappointing. Minimal food and options - sadly the state of current affairs. All other aspects of the flight were fine.

Great flight - friendly and attentive team! Seats in coach were comfy, but a little cramped - but that is the case with all airlines ;)

The boarding by groups is pointless. The first two groups worked fine, but almost Noone boarded in goups three thru five leaving the vast majority boarding when group six was called. It defeated the purpose of spreading out the crowd.

For whatever reason, the flight was not catered -we were told it would be a 45 minute delay waiting for catering - so no food. There were opened candy and peanuts in the seatback pocket. Flight landed early in DFW but due to the assigned gate not being available, we sat on the ground for 30 minutes waiting for the gate to open - making the flight actually arrive at the gate late.

The pilot greased the landing and the crew was fantastic.

I bought wifi and most of the flight could not even use it my apps would just spin. I couldn't even listen to music. super frustrating.

delayed due to weather. Could not communicate with family since the wifi was broken

I loved the staff on the plane. So friendly and helpful! However, there was an argument and misunderstanding by the staff and a customer at the gate, and the staff member was being unprofessional. When we arrived in Atlanta, we waited 1.5 hrs for our luggage to arrive. When I asked the airport attendant, they said Frontier had the longest wait for luggage out of any airlines, and that they could not be held responsible for the delay.

Not clean and was told I would get a great seat and it was not great at all

Flight got delayed for 5 hours no good explanation was offered ;(

Horrible. I would never fly Frontier again. The booking process is tricky at best, but fraudulent in my opinion. Frontier customer service did nothing to rectify my purchase -- I ended up paying more than double what I could have gotten from other airlines and nearly triple what I thought I was buying from Frontier. Their booking practices are unfair to the consumer.

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

Better than expected. Staff were friendly and nice on both flights.

There was no one at the counter to assist with our check in. The app didn’t work, so I arrived at the airport with time to check in and I couldn’t because no employees were there. When I finally got someone on the phone, it was inside the 60min rule and they said I could no longer check in and they could sell me another ticket. We had to scramble and pay an additional $800 for tickets and THEN AFTER (about 60 min from my original convo with customer service and 10min after original departure time) I had boarded my new flight, there was email saying my original flight from Frontier was delayed and leaving 2hr 50min later, but I STILL wouldn’t have been able to check in. Which means customer service should have been able to see it and let me check in because I was well within my check in time. When I call Frontier, they hang up on me. So their app didn’t work and they employees left and they take zero responsibility or assistance with their “customer service”

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

No fault of Frontier staff: plane was very late, reached Orlando at 1 am, took a while to get luggage. Weather, gov financial shutdown impact on TSA, air controllers seemed to have multiple flights backed up. Frontier staff seemed to cope as gracefully as possible. It did reassure me that I and my new hip could adapt to travel challenges. Food/entertainment were irrelevant to my trip.

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

Information on your arrival and departure airports