$141+ Cheap flights from Seattle to Sioux Falls (SEA - FSD)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FSD
Jul 18 — Jul 251
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Sioux Falls with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Sioux Falls
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Best
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One-way
Cheapest flights from Seattle to Sioux FallsExplore the most affordable flight options available from Seattle to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
Explore the most affordable flight options available from Seattle to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
This CheapOair deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:06 pm
SEA
- FSD
1 stop22h 55m
Frontier
Mon 8/318:56 pm
FSD
- SEA
1 stop14h 23m
Frontier
Deal found 6/18![Frontier logo]()
$270
This CheapOair deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:06 pm
SEA
- FSD
1 stop22h 17m
Frontier
Fri 8/148:08 pm
FSD
- SEA
1 stop14h 56m
Frontier
Deal found 6/17![Frontier logo]()
$275
This CheapOair deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:41 pm
SEA
- FSD
1 stop20h 55m
Frontier
Mon 10/57:31 pm
FSD
- SEA
1 stop6h 56m
Frontier
Deal found 6/17![Frontier logo]()
$315
This CheapOair deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:41 pm
SEA
- FSD
1 stop21h 38m
Frontier
Mon 6/298:14 pm
FSD
- SEA
1 stop15h 34m
Frontier
Deal found 6/16![Frontier logo]()
$320
This Priceline deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:00 am
SEA
- FSD
1 stop9h 36m
Frontier
Mon 9/287:31 pm
FSD
- SEA
1 stop6h 56m
Frontier
Deal found 6/14![Frontier logo]()
$324
This American Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:53 pm
SEA
- FSD
1 stop6h 55m
American Airlines
Sat 8/292:12 pm
FSD
- SEA
1 stop7h 58m
American Airlines
Deal found 6/14![American Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:03 am
SEA
- FSD
2 stops10h 19m
United Airlines
Sat 8/296:00 am
FSD
- SEA
1 stop6h 01m
United Airlines
Deal found 6/17![United Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:30 pm
SEA
- FSD
1 stop6h 21m
Delta
Mon 8/315:00 am
FSD
- SEA
1 stop5h 48m
Delta
Deal found 6/18![Delta logo]()
$364
This CheapOair deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:41 pm
SEA
- FSD
1 stop21h 38m
Frontier
Mon 7/208:08 pm
FSD
- SEA
1 stop15h 09m
Frontier
Deal found 6/15![Frontier logo]()
$369
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:00 am
SEA
- FSD
1 stop5h 49m
United Airlines
Mon 10/55:04 pm
FSD
- SEA
1 stop7h 55m
United Airlines
Deal found 6/17![United Airlines logo]()
$371
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:40 am
SEA
- FSD
1 stop5h 43m
United Airlines
Sat 9/57:47 am
FSD
- SEA
1 stop10h 23m
United Airlines
Deal found 6/17![United Airlines logo]()
$372
This CheapOair deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/167:41 pm
SEA
- FSD
1 stop21h 38m
Frontier
Fri 6/198:14 pm
FSD
- SEA
1 stop15h 34m
Frontier
Deal found 6/16![Frontier logo]()
$379
Best flights from Seattle to Sioux FallsDiscover carefully curated flight deals from Seattle to Sioux Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
Discover carefully curated flight deals from Seattle to Sioux Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:03 am
SEA
- FSD
2 stops10h 19m
United Airlines
Sat 8/296:00 am
FSD
- SEA
1 stop6h 01m
United Airlines
Deal found 6/17![United Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/182:30 pm
SEA
- FSD
1 stop6h 21m
Delta
Tue 9/224:20 pm
FSD
- SEA
1 stop5h 56m
Delta
Deal found 6/15![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:54 pm
SEA
- FSD
1 stop5h 50m
United Airlines
Sat 8/295:05 pm
FSD
- SEA
1 stop6h 26m
United Airlines
Deal found 6/13![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1811:00 pm
SEA
- FSD
1 stop9h 37m
United Airlines
Tue 9/226:00 am
FSD
- SEA
1 stop6h 01m
United Airlines
Deal found 6/17![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/273:51 pm
SEA
- FSD
1 stop5h 05m
United Airlines
Sat 10/311:45 pm
FSD
- SEA
2 stops11h 36m
United Airlines
Deal found 6/17![United Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/289:00 am
SEA
- FSD
2 stops12h 22m
United Airlines
Mon 8/316:00 am
FSD
- SEA
1 stop6h 01m
United Airlines
Deal found 6/13![United Airlines logo]()
$485
Last-minute flights from Seattle to Sioux FallsDiscover last-minute flight deals from Seattle to Sioux Falls. Data last updated June 18, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Sioux Falls. Data last updated June 18, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/187:41 pm
SEA
- FSD
1 stop21h 38m
Frontier
Mon 6/228:14 pm
FSD
- SEA
1 stop15h 34m
Frontier
Deal found 6/18![Frontier logo]()
$380
This CheapOair deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:41 pm
SEA
- FSD
1 stop21h 38m
Frontier
Mon 6/298:14 pm
FSD
- SEA
1 stop15h 34m
Frontier
Deal found 6/16![Frontier logo]()
$320
This CheapOair deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:41 pm
SEA
- FSD
1 stop21h 38m
Frontier
Mon 7/208:08 pm
FSD
- SEA
1 stop15h 09m
Frontier
Deal found 6/15![Frontier logo]()
$369
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/245:07 am
SEA
- FSD
1 stop5h 28m
United Airlines
Sun 6/286:51 pm
FSD
- SEA
1 stop6h 19m
United Airlines
Deal found 6/13![United Airlines logo]()
$493
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/255:00 am
SEA
- FSD
1 stop5h 35m
United Airlines
Tue 6/305:05 pm
FSD
- SEA
1 stop6h 05m
United Airlines
Deal found 6/14![United Airlines logo]()
$464
This American Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/75:05 am
SEA
- FSD
1 stop9h 49m
American Airlines
Tue 7/145:34 pm
FSD
- SEA
1 stop9h 23m
American Airlines
Deal found 6/14![American Airlines logo]()
$518
This American Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/135:05 am
SEA
- FSD
1 stop9h 49m
American Airlines
Mon 7/205:34 pm
FSD
- SEA
1 stop9h 23m
American Airlines
Deal found 6/15![American Airlines logo]()
$424
This American Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:05 am
SEA
- FSD
1 stop9h 49m
American Airlines
Tue 7/215:34 pm
FSD
- SEA
1 stop9h 23m
American Airlines
Deal found 6/14![American Airlines logo]()
$437
This Kiwi.com deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/168:53 pm
SEA
- FSD
1 stop12h 03m
Multiple Airlines
Mon 7/208:08 pm
FSD
- SEA
1 stop15h 09m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$475
This American Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:05 am
SEA
- FSD
1 stop9h 49m
American Airlines
Sat 8/15:34 pm
FSD
- SEA
1 stop9h 23m
American Airlines
Deal found 6/13![American Airlines logo]()
$379
One-way flights from Seattle to Sioux FallsSearch for one-way flight options from Seattle to Sioux Falls. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
Search for one-way flight options from Seattle to Sioux Falls. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
This CheapOair deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:06 pm
SEA
- FSD
1 stop22h 17m
Frontier
Deal found 6/17![Frontier logo]()
$141
This CheapOair deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:06 pm
SEA
- FSD
1 stop22h 17m
Frontier
Deal found 6/17![Frontier logo]()
$176
This CheapOair deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:41 pm
SEA
- FSD
1 stop21h 38m
Frontier
Deal found 6/18![Frontier logo]()
$195
This CheapOair deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/257:41 pm
SEA
- FSD
1 stop21h 38m
Frontier
Deal found 6/15![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:34 am
SEA
- FSD
2 stops28h 47m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/911:54 am
SEA
- FSD
2 stops21h 02m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:06 pm
SEA
- FSD
2 stops22h 44m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:34 am
SEA
- FSD
2 stops30h 07m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$255
This American Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2412:59 am
SEA
- FSD
1 stop9h 37m
American Airlines
Deal found 6/16![American Airlines logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3011:54 am
SEA
- FSD
2 stops21h 02m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$280
This American Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:15 am
SEA
- FSD
1 stop8h 16m
American Airlines
Deal found 6/13![American Airlines logo]()
$288
Find flight deals from Seattle to Sioux Falls
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Sioux Falls (FSD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $270 (CheapOair) |
One-way from | $141 (CheapOair) |
Popular in | May |
Cheapest in | November |
Average price | $416 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Sioux Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2026.
Use the filters below to find and compare flights from Seattle to Sioux Falls that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleSioux Falls
SEA - FSD
SEAFSD
Seattle/Tacoma Intl
Wed 8/26
11:03 am-11:22 pm
2 stops10h 19m
Sioux Falls Joe Foss Field
Sat 8/29
6:00 am-10:01 am
1 stop6h 01m
$334
SeattleSioux Falls
SEA - FSD
SEAFSD
Seattle/Tacoma Intl
Fri 9/18
2:30 pm-10:51 pm
1 stop6h 21m
Sioux Falls Joe Foss Field
Tue 9/22
4:20 pm-8:16 pm
1 stop5h 56m
$364
Quickest round-trip
SeattleSioux Falls
SEA - FSD
SEAFSD
Seattle/Tacoma Intl
Tue 8/25
3:54 pm-11:44 pm
1 stop5h 50m
Sioux Falls Joe Foss Field
Sat 8/29
5:05 pm-9:31 pm
1 stop6h 26m
$419
SeattleSioux Falls
SEA - FSD
SEAFSD
Seattle/Tacoma Intl
Fri 9/18
11:00 pm-10:37 am
1 stop9h 37m
Sioux Falls Joe Foss Field
Tue 9/22
6:00 am-10:01 am
1 stop6h 01m
$419
SeattleSioux Falls
SEA - FSD
SEAFSD
Seattle/Tacoma Intl
Tue 10/27
3:51 pm-10:56 pm
1 stop5h 05m
Sioux Falls Joe Foss Field
Sat 10/31
1:45 pm-11:21 pm
2 stops11h 36m
$424
SeattleSioux Falls
SEA - FSD
SEAFSD
Seattle/Tacoma Intl
Fri 8/28
9:00 am-11:22 pm
2 stops12h 22m
Sioux Falls Joe Foss Field
Mon 8/31
6:00 am-10:01 am
1 stop6h 01m
$485
Cheapest one-way
SeattleSioux Falls
SEA - FSD
SEAFSD
Seattle/Tacoma Intl
Thu 7/9
7:06 pm-7:23 pm
1 stop22h 17m
$141
SeattleSioux Falls
SEA - FSD
SEAFSD
Seattle/Tacoma Intl
Thu 7/30
7:06 pm-7:23 pm
1 stop22h 17m
$141
SeattleSioux Falls
SEA - FSD
SEAFSD
Seattle/Tacoma Intl
Thu 6/25
7:41 pm-7:19 pm
1 stop21h 38m
$216
SeattleSioux Falls
SEA - FSD
SEAFSD
Seattle/Tacoma Intl
Thu 8/27
10:34 am-5:21 pm
2 stops28h 47m
$217
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from Seattle to Sioux Falls
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Sioux Falls in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Sioux Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Sioux Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Sioux Falls flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Sioux Falls flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Sioux Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Sioux Falls
Have a flexible travel schedule? Discover the best time to fly to Sioux Falls from Seattle with our price prediction graph.
SEA-FSD
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Sioux Falls
How far ahead should I book a flight from Seattle to Sioux Falls?
The price you pay for your flight from Seattle to Sioux Falls may vary depending on when you book. For the best chance of a lower fare, look to book 3 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Seattle to Sioux Falls?
Currently, November is the cheapest month in which you can book a flight from Seattle to Sioux Falls (average of $286). Flying from Seattle to Sioux Falls in May is currently the most expensive (average of $689). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Seattle to Sioux Falls?
Reviews of airlines servicing Sioux Falls
Get insights into the airlines that provide service to Sioux Falls. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sioux Falls. Reviews last updated June 18, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Seattle to Sioux Falls have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to Sioux Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Sioux Falls?
Book flights to Sioux Falls if you plan to visit one of these locationsMarshall
Yankton
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Seattle and Sioux Falls flights
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Top 4 airlines flying from Seattle to Sioux Falls
Discover the top 4 airlines that operate flights from Seattle to Sioux Falls. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$188 | Average$379 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$268 | Average$408 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$278 | Average$438 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$286 | Average$514 | FlexibilityNo cancel fee | On-time69% |