Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

FSD - SEA

Find cheap flights from Sioux Falls to Seattle from $105

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 9/7. 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
0 bags
vr 5/24
vr 5/31

Search 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
In the last 7 days travelers have searched 44,632,927 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
1:28 pm - 9:11 pmFSD-SEA
9h 43m1 stop
10:08 pm - 12:33 pmSEA-FSD
12h 25m1 stop
$274Frontier
Find Deal
za, aug. 17 - ma, aug. 19
1:28 pm - 8:37 amFSD-SEA
21h 09m1 stop
10:08 pm - 12:33 pmSEA-FSD
12h 25m1 stop
$277Frontier
Find Deal
di, aug. 20 - vr, aug. 23
5:10 pm - 8:02 amFSD-SEA
16h 52m1 stop
11:05 am - 11:29 pmSEA-FSD
10h 24m1 stop
$439United Airlines
Find Deal
wo, jun. 12 - ma, jun. 17
6:00 am - 9:15 pmFSD-SEA
17h 15m1 stop
5:00 am - 8:33 pmSEA-FSD
13h 33m1 stop
$444United Airlines
Find Deal
wo, okt. 2 - za, okt. 5
5:36 pm - 11:05 pmFSD-SEA
7h 29m1 stop
11:59 pm - 4:52 pmSEA-FSD
14h 53m1 stop
$457American Airlines
Find Deal
za, mei. 18 - wo, mei. 29
10:40 am - 10:45 pmFSD-SEA
14h 05m1 stop
6:36 am - 9:58 pmSEA-FSD
13h 22m1 stop
$476American Airlines
Find Deal
za, aug. 17 - di, aug. 20
5:11 am - 7:13 pmFSD-SEA
16h 02m2 stops
5:30 am - 10:55 pmSEA-FSD
15h 25m2 stops
$553Delta
Find Deal
za, jul. 13 - di, jul. 16
5:30 am - 2:42 pmFSD-SEA
11h 12m2 stops
12:30 am - 9:58 amSEA-FSD
7h 28m1 stop
$621Delta
Find Deal
za, sep. 28 - ma, sep. 30
5:52 pm - 11:59 pmFSD-SEA
8h 07m1 stop
10:45 pm - 10:17 amSEA-FSD
9h 32m1 stop
$658Alaska Airlines
Find Deal
di, jul. 9 - ma, jul. 15
5:52 pm - 11:59 pmFSD-SEA
8h 07m1 stop
6:07 am - 5:27 pmSEA-FSD
9h 20m1 stop
$678Alaska Airlines
Find Deal
zo, jul. 14 - ma, jul. 15

Flights from Sioux Falls to Seattle - Travel Insights & Trends

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’s the cheapest day of the week to fly from Sioux Falls to Seattle?

The average price of all flights from Sioux Falls to Seattle clicked on KAYAK for each day over the last 12 months.
When flying from Sioux Falls to Seattle, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Sioux Falls, you’ll find the best rates on Tuesdays and the most expensive ones on Sundays.

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 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 September, where tickets cost $428 on average. On the other hand, the most expensive months are July and June, where the average cost of tickets is $720 and $692 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Sioux Falls to Seattle, you should book around 3 days before departure. For the absolute cheapest price, our data suggests you should book 47 days before departure.

Which airlines provide the cheapest flights from Sioux Falls to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Sioux Falls to Seattle were found on Frontier ($274) and United Airlines ($439). Frontier proposed the cheapest one-way flight at $105.

Good to know

Low season

January

High season

July

Cheapest flight

$105
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 28% 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 3 days, the lowest price for a flight from Sioux Falls to Seattle was $105 for a one-way ticket and $274 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, Star Alliance, and SkyTeam 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, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Sioux Falls to Seattle are Alaska Airlines and Delta. With an average price for the route of $687 and an overall rating of 8.1, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $635 and an overall rating of 8.0.

  • 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.

See more FAQs

Top 5 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.
8.1
Alaska AirlinesOverall score based on 9111 reviews
7.9comfort
8.2boarding
7.3food
8.6crew
7.3entertainment
Airline reviews

It was much better than expected. Short flight and smaller plane so no entertainment or food.

10.0 ExcellentAnonymous, Apr 2024SLC - SEA
Read more about Alaska Airlines reviews

It was much better than expected. Short flight and smaller plane so no entertainment or food.

It took around two hours to depart. Just sitting in the tamarack waiting. It impacted my traveling plans in a very dramatic way. When we returned, it took around two hours for us to be able to get our luggage. Ridiculous!!

I thought every thing was good with the acceptation of the long layover between Seattle and the Tampa trip.

While the flight and the legroom was good boarding took a long time. The different groups Boarding made no sense as those in the back of the flight boarded last causing delays as people try to find room for their luggage in the upper bins. While there were plenty of seats on the flights We were spaced so that some rows were filled and others were empty. My first flight was very crowded and uncomfortable. On the way back both flights did not have Wi-Fi nor the entertainment package. We were only made aware of this a few hours before the flight. Since the flight was in the morning, I was asleep and was not able to download Books or other media to my phone. This is my first time flying Alaska airlines and I will admit to thinking twice before I do so again.

Our flight was delayed by six hours, our plane never left Portland the night before but the airline didn’t inform anyone till two hours before a six am flight. The plane, our plane never left the west coast! No plane no flight, simply let folks know when you know, not hours and hours later. No one apologized, no one said much of anything, we were just expected to wait quietly and await instructions.

The staff were great and the layover times were excellent no multiple hours. I just hate the Boxed Water. So you really have to purchase high price water in the airport.

Both flights were delayed. We sat on the tarmac on Boise for 3 hours with little updates

This flight was significantly affected by poor wifi connections. I couldn’t get my work done because the wifi kept dropping. Even texts were not going through. There is no seat power in premium class either. I fly a lot. Today was my 10th flight in 4 weeks. This was by far the only flight that was sub par.

4 out of 4 flights cancelled or delayed. 5th trip with similar experience

On time, comfortable seats with plenty of leg room, nice staff. Pretty good!

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

Delta needs to step up the meals and snacks. They have been serving the same two meals for three years.... It is time to change it up.

Really liked the choice of the 4 free snack options. Crew great. Good vibe on plane.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

they made me check my carryon. There was space in the overhead bins.

Nice flight, nice crew but no cookie or napkin with my seltzer.

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

The Flight attendant had an attitude and didn't allow anyone any time to prepare for landing despite being absent throughout the entire trip

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

The flight was great but board was a nightmare. The gate was changed 4 times during the layover period

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Cold air blew constantly on my legs almost making me numb.

Missed the flight because of them and up geting a rental car

Delayd flight out of atl as always miss my conection in dfw no flight untill next day

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

Book cheap flights from Sioux Falls to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Sioux Falls to Seattle found on KAYAK in the last 72 hours.
9/7za
1 stopFrontier
9h 43mFSD-SEA
$105
7/30di
1 stopAmerican Airlines
11h 06mFSD-SEA
$244
9/7za
2 stopsUnited Airlines
23h 49mFSD-SEA
$312
7/30di
2 stopsUnited Airlines
18h 54mFSD-SEA
$379
7/30di
2 stopsDelta
12h 02mFSD-SEA
$407
7/30di
3 stopsUnited Airlines
18h 45mFSD-SEA
$408
9/7za
3 stopsUnited Airlines
17h 59mFSD-SEA
$1,168

Search by stops

Search by airline

Search by price

Last minute flights from Sioux Falls to Seattle

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Sioux Falls to Seattle that are departing in the next 10 days.
4/26vr
multi-stopFrontier
22h 54mFSD-SEA
4/28zo
multi-stopFrontier
15h 25mSEA-FSD
$355
4/27za
multi-stopFrontier
6h 40mFSD-SEA
4/29ma
multi-stopFrontier
5h 35mSEA-FSD
$358
4/27za
multi-stopFrontier
6h 40mFSD-SEA
5/5zo
multi-stopFrontier
15h 25mSEA-FSD
$398
4/29ma
multi-stopUnited Airlines
18h 25mFSD-SEA
5/3vr
multi-stopUnited Airlines
20h 06mSEA-FSD
$574
4/27za
multi-stopUnited Airlines
13h 21mFSD-SEA
5/5zo
multi-stopUnited Airlines
16h 26mSEA-FSD
$579
4/26vr
multi-stopUnited Airlines
11h 23mFSD-SEA
4/28zo
multi-stopUnited Airlines
14h 26mSEA-FSD
$599
4/27za
multi-stopDelta
7h 47mFSD-SEA
5/4za
multi-stopDelta
7h 44mSEA-FSD
$898
4/26vr
multi-stopDelta
5h 54mFSD-SEA
4/27za
multi-stopDelta
7h 44mSEA-FSD
$938
4/27za
multi-stopAmerican Airlines
13h 29mFSD-SEA
4/28zo
multi-stopAmerican Airlines
9h 49mSEA-FSD
$1,051
4/29ma
multi-stopAmerican Airlines
10h 56mFSD-SEA
5/2do
multi-stopAmerican Airlines
9h 49mSEA-FSD
$1,116

Search by stops

Search by airline

Search by price

Sioux Falls - Seattle Flights

Departure:

Sioux Falls (FSD)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Sioux Falls

Cabin classes: