SEA - FSD

$135 Find Cheap Flights from Seattle to Sioux Falls

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Sioux Falls departing on 8/4. 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 Sioux Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Sioux Falls, 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 Seattle to Sioux Falls, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$320
Typical prices: $512-$373
Frontier
Tue 7/7Fri 7/10
SEA - FSD • 1 stop
Cheapest one-way
$135
Typical prices: $211-$416
Frontier
Tue 8/4
SEA - FSD • 1 stop
Top airlines
Cheapest • from $320 (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 Seattle and Sioux Falls. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $402 (round-trip)
Shortest trip • 6h 03m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 18% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 38% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Sioux Falls 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 Seattle to Sioux Falls

Tue, Jul 7 - Fri, Jul 10
Frontier Logo
7:06 pm - 7:23 pm
SEA
-
FSD
22h 17m
1 stop
Frontier Logo
8:08 pm - 9:17 am
FSD
-
SEA
15h 09m
1 stop
$320Frontier
Mon, Sep 21 - Mon, Sep 28
Frontier Logo
7:00 am - 6:36 pm
SEA
-
FSD
9h 36m
1 stop
Frontier Logo
7:31 pm - 12:27 am
FSD
-
SEA
6h 56m
1 stop
$324Frontier
Tue, Jul 21 - Sat, Jul 25
American Airlines Logo
5:05 am - 4:54 pm
SEA
-
FSD
9h 49m
1 stop
American Airlines Logo
5:34 pm - 12:57 am
FSD
-
SEA
9h 23m
1 stop
$329American Airlines
Tue, Oct 20 - Sat, Oct 24
United Airlines Logo
3:55 pm - 11:44 pm
SEA
-
FSD
5h 49m
1 stop
United Airlines Logo
7:50 am - 4:02 pm
FSD
-
SEA
10h 12m
2 stops
$334United Airlines
Fri, Sep 18 - Tue, Sep 22
Delta Logo
2:30 pm - 10:51 pm
SEA
-
FSD
6h 21m
1 stop
Delta Logo
4:20 pm - 8:16 pm
FSD
-
SEA
5h 56m
1 stop
$364Delta
Sat, Nov 7 - Wed, Nov 11
United Airlines Logo
2:15 pm - 11:36 pm
SEA
-
FSD
7h 21m
1 stop
United Airlines Logo
6:00 am - 12:12 pm
FSD
-
SEA
8h 12m
2 stops
$366United Airlines
Thu, Jun 25 - Mon, Jul 20
Frontier Logo
7:41 pm - 7:19 pm
SEA
-
FSD
21h 38m
1 stop
Frontier Logo
8:08 pm - 9:17 am
FSD
-
SEA
15h 09m
1 stop
$369Frontier
Tue, Jul 21 - Sat, Aug 1
American Airlines Logo
5:05 am - 4:54 pm
SEA
-
FSD
9h 49m
1 stop
American Airlines Logo
5:34 pm - 12:57 am
FSD
-
SEA
9h 23m
1 stop
$379American Airlines
Wed, Jul 8 - Fri, Jul 17
Multiple Airlines Logo
7:06 pm - 10:56 am
SEA
-
FSD
37h 50m
2 stops
Multiple Airlines Logo
11:46 am - 10:39 am
FSD
-
SEA
24h 53m
1 stop
$398Multiple Airlines
Fri, Sep 18 - Tue, Sep 22
Delta Logo
2:30 pm - 10:51 pm
SEA
-
FSD
6h 21m
1 stop
Delta Logo
4:20 pm - 8:16 pm
FSD
-
SEA
5h 56m
1 stop
$404Delta
Booking Insights

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

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Sioux Falls, 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 Seattle to Sioux Falls is November, where tickets cost $286 (return) on average. On the other hand, the most expensive months are February and May, where the average cost of round-trip tickets is $860 and $685 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Sioux Falls, 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 Seattle to Sioux Falls, you should book around 3 weeks before departure, which saves you about 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$135
Best time to beat the crowds but there is an average 35% increase in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Seattle to Sioux Falls

When to book flights from Seattle to Sioux Falls

Are your dates flexible? Find out the best times to travel from Seattle to Sioux Falls 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 Seattle to Sioux Falls

  • What is the baggage allowance for flights from Seattle to Sioux Falls?

    Baggage allowance varies depending on the airline and fare type you choose. All passengers on American Airlines, regardless of the fare type, can bring a personal item and carry-on free of charge. Checked bags of up to 50 lbs will cost extra unless you upgrade to Business class. When checking bags, we suggest prepaying for them to save time and money at the airport.

  • Which airlines flying from Seattle to Sioux Falls are family-friendly?

    Frontier Airlines has several programs to cater to families when booking. The Works bundle is great for families looking for flexibility with their travel plans. With this plan, you can select your seat, board first, and change your flight with no fee. Families can take advantage of priority boarding at the airport and onboard, kids can collect trading cards and get their own flight certificate signed by the crew.

  • Which airline is recommended for people with special needs?

    Delta, United, and American Airlines all provide wheelchair assistance for passengers with limited mobility. With Delta, you can arrange a wheelchair and have it waiting when you arrive at the airport. They also have special aisle chairs that can be used for getting around the aircraft, boarding, and deplaning. Delta also offers services for those with limited sight or hearing. All services can be arranged after booking using the Accessibility Service Request form at least 48 hours before the flight.

  • Which is the most sustainable way to fly from Seattle to Sioux Falls?

    Eco-minded travelers might enjoy the initiatives Frontier is taking to be more green. In their flights and operations, they have programs to protect the environment. They operate the youngest fleet in the industry, which has helped them to save 43% in fuel emissions. On the aircraft, they’ve introduced lighter seats and biodegradable cups.

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

    In the last 5 days, the lowest price for a flight from Seattle to Sioux Falls was $135 for a one-way ticket and $320 for a round-trip.

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

    No, a passport isn't needed to fly from Seattle to Sioux Falls. However, local authorities might ask for an official ID.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Sioux Falls are Delta and United Airlines. With an average price for the route of $438 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 $516 and an overall rating of 7.4.

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

    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 Seattle to Sioux Falls.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sioux Falls from Seattle 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 Seattle to Sioux Falls?

    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 Sioux Falls with an airline and back to Seattle with another airline. Booking your flights between Seattle and FSD 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 Seattle to Sioux Falls?

    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 Sioux Falls from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Sioux Falls

  • While there are no direct flights from Seattle (SEA) to Sioux Falls (FSD), most flights have just one layover. Denver (DEN), Minneapolis (MSP), and Dallas, (DFW) are the most common cities where you might stop along this route.
  • Frontier is a budget airline with low fares, which means all extra services will have a separate charge. However, they offer different packages and bundles that combine services to save you money.
  • Passengers on Delta Air Lines should consider joining the SkyMiles rewards program. All SkyMiles members can enjoy free Wi-Fi during their flights. You can earn miles each time you fly in the Main Cabin or above.
  • The Basic Economy fare on Delta is a good option for budget travelers who aren’t bringing a lot of luggage. One personal item and a carry-on bag are allowed free of charge. Any other services like seat selection and priority boarding will cost extra.
  • You will arrive at Sioux Falls Regional Airport (FSD) which is located just a few miles north of the city. There is no public transportation, but you will find plenty of taxis and ride-share services to take you where you need to go.

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

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Sioux Falls. 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 Seattle to Sioux Falls? 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 8400 reviews
8.1Boarding
7.8Entertainment
7.2Food
8.5Crew
7.8Comfort
Airline reviews

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

2.0 MediocreBen, Jun 2026
ATL - HSV
Read more Delta reviews

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Two delays on two separate planes with parts they could not easily find and replace.

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

This planes staff was top tier. Everything went great and had a great flight home.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Service was professional and quick. Premium economy seat was comfortable given the class

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

Flight was delayed by 6 hours... the level of incompetence was truly astounding. I won't be flying American Airlines again. I don't care if AA is direct and there is a layover with another airline, I'll take the layover.

Leave on time. We waited on the plane for hour hours and it was hot and smelly

Two hours delay, probably one hour because they didn’t bring catering and they had to bring water in board. There a change of aircraft. But delays galore at CLT so it must be a CLT and/or AA operation issue. The 1 hr additional delays because nobody could bring 2 packs of water sooner is probably the best example of this airline operates

Flight was delayed 5 hours. Initial reason for delay was 'maintenance' - which makes sense. Then, the additional 2 hours continued to say it was maintenance - when I know EWR had a 2 hour delay. AA did not say that. Additionally, when boarding, there was only one agent at the counter for a long time - until another came to help. After boarding, we had to wait another 45 minutes due to 'no catering'. So while we waited for catering, AA continued to board additional passengers - which seemed odd - and raised questions about what really was going on. I sat in First Class. During the flight, the flight crew allowed a significant number of non-First Class passengers to use the front bathroom - which created a very crowded environment in First Class which was uncomfortable. This also delayed First Class passengers from using the bathroom. Overall, horrible experience.

The Charleston, WV airport was cute. Very good staff and small enough to feel comfortable. The plane had more leg room than bigger planes. Much more comfortable.

Another uncoordinated American experience. Always surprises me at DFW for them of all places. Have to take this flight as there are no other good time options. We knew from the start that something was wrong, but the pilot wouldn't tell us. I just watched my Kayak app grow the delay by 10 minutes as it went to 3.5 hours. They were uncoordinated with maintenance (as maintenance, when finally arriving, knew within 15 minutes the plane wasn't going. No 'sorry' or 'this is what is going on' comment. The pilot seemed unfazed / didn't care about the process we were going through.

The seats. The seat in front of me was awful and when the guy sat down, it flew back and hit my head when I was putting my backpack under the seat, It didn't make for a pleasant experience,

I’ve got 31F seat and window seat . My 2 co passengers was AA crew members and they were very rude attitude and when I was going to use bathroom their gestures was very different and awkward and the guy beside me completely occupied the hand rest and I was really uncomfortable

The gate experience at LAX was abysmal (same for the arrival experience two days prior). Despite the LAX -> SAT schedule of two flights daily, our departure gate was at a smaller hub that we had to be bussed to from Terminal 4. Fortunately, I arrived at LAX extra early and had time to spare, but if I had not known, I might have missed my flight. I looked at the LAX airport map in the AA app and there was no indication of the additional boarding process. Lastly the gate area we were bussed to was crowded with limited food and beverage options. On flight, the fight attendant was hospitable and attentive, the flight was smooth, and AA's free (and working) wifi for AA members were all on the positive side.

It was so much better than expected, Ohare is not such a pleasant experience but American Airlines with the new, clean aeroplane and free Wi-Fi was outstanding and the crew so pleasant and helpful.

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

The staff at the check in counter was so rude. Made you feel Incompetent

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

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

Information on your arrival and departure airports