$146+ Cheap flights from Sioux Falls to Seattle (FSD - SEA)
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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — SEA
Jul 12 — Jul 191
Round-trip
1 adult, Economy
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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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Cheapest flights from Sioux Falls to SeattleExplore the most affordable flight options available from Sioux Falls to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2026.
Explore the most affordable flight options available from Sioux Falls to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2026.
This CheapOair deal was found by Cheapflights users on 6/10. 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.
Wed 8/268:14 pm
FSD
- SEA
1 stop15h 34m
Frontier
Tue 9/17:41 pm
SEA
- FSD
1 stop21h 38m
Frontier
Deal found 6/10![Frontier logo]()
$260
This CheapOair deal was found by Cheapflights users on 6/10. 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.
Wed 7/228:08 pm
FSD
- SEA
1 stop15h 09m
Frontier
Thu 7/307:06 pm
SEA
- FSD
1 stop22h 17m
Frontier
Deal found 6/10![Frontier logo]()
$299
This CheapOair deal was found by Cheapflights users on 6/9. 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.
Mon 7/138:08 pm
FSD
- SEA
1 stop15h 09m
Frontier
Thu 7/237:06 pm
SEA
- FSD
1 stop22h 17m
Frontier
Deal found 6/9![Frontier logo]()
$318
This CheapOair deal was found by Cheapflights users on 6/11. 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.
Wed 7/88:08 pm
FSD
- SEA
1 stop15h 09m
Frontier
Tue 7/147:06 pm
SEA
- FSD
1 stop22h 17m
Frontier
Deal found 6/11![Frontier logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Wed 8/123:39 pm
FSD
- SEA
1 stop21h 29m
Multiple Airlines
Wed 8/198:13 pm
SEA
- FSD
1 stop22h 57m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$328
This Delta deal was found by Cheapflights users on 6/11. 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.
Mon 8/248:22 am
FSD
- SEA
1 stop6h 38m
Delta
Sat 8/296:05 am
SEA
- FSD
1 stop7h 43m
Delta
Deal found 6/11![Delta logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Mon 8/1011:42 am
FSD
- SEA
2 stops23h 22m
Multiple Airlines
Wed 8/198:13 pm
SEA
- FSD
1 stop22h 57m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$333
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 8/249:35 am
FSD
- SEA
1 stop8h 17m
United Airlines
Sat 8/291:16 pm
SEA
- FSD
2 stops8h 28m
United Airlines
Deal found 6/11![United Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Wed 8/123:39 pm
FSD
- SEA
1 stop21h 29m
Multiple Airlines
Tue 8/187:41 pm
SEA
- FSD
1 stop21h 38m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$335
This Delta deal was found by Cheapflights users on 6/8. 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.
Wed 8/265:00 am
FSD
- SEA
1 stop5h 48m
Delta
Wed 9/211:59 pm
SEA
- FSD
1 stop8h 21m
Delta
Deal found 6/8![Delta logo]()
$339
This CheapOair deal was found by Cheapflights users on 6/7. 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.
Fri 7/38:14 pm
FSD
- SEA
1 stop20h 04m
Frontier
Tue 7/77:06 pm
SEA
- FSD
1 stop22h 17m
Frontier
Deal found 6/7![Frontier logo]()
$340
Best flights from Sioux Falls to SeattleDiscover carefully curated flight deals from Sioux Falls to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2026.
Discover carefully curated flight deals from Sioux Falls to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2026.
This Delta deal was found by Cheapflights users on 6/7. 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.
Wed 8/265:00 am
FSD
- SEA
1 stop5h 48m
Delta
Sat 9/52:30 pm
SEA
- FSD
1 stop6h 21m
Delta
Deal found 6/7![Delta logo]()
$339
This United Airlines deal was found by Cheapflights users on 6/7. 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 8/266:50 pm
FSD
- SEA
1 stop6h 14m
United Airlines
Tue 9/111:03 am
SEA
- FSD
2 stops10h 19m
United Airlines
Deal found 6/7![United Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 6/7. 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 9/239:35 am
FSD
- SEA
1 stop5h 47m
United Airlines
Sat 9/261:22 pm
SEA
- FSD
2 stops8h 22m
United Airlines
Deal found 6/7![United Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 6/7. 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 8/267:47 am
FSD
- SEA
2 stops13h 21m
United Airlines
Sat 9/511:00 pm
SEA
- FSD
1 stop9h 29m
United Airlines
Deal found 6/7![United Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Sat 10/247:50 am
FSD
- SEA
2 stops14h 47m
United Airlines
Wed 10/289:02 am
SEA
- FSD
2 stops11h 54m
United Airlines
Deal found 6/9![United Airlines logo]()
$470
This United Airlines deal was found by Cheapflights users on 6/7. 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 6/246:51 pm
FSD
- SEA
1 stop6h 19m
United Airlines
Wed 7/15:00 am
SEA
- FSD
1 stop5h 35m
United Airlines
Deal found 6/7![United Airlines logo]()
$490
This United Airlines deal was found by Cheapflights users on 6/9. 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 9/211:25 am
FSD
- SEA
2 stops14h 01m
United Airlines
Thu 9/101:57 pm
SEA
- FSD
1 stop6h 55m
United Airlines
Deal found 6/9![United Airlines logo]()
$532
This United Airlines deal was found by Cheapflights users on 6/8. 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 11/127:40 am
FSD
- SEA
2 stops14h 30m
United Airlines
Mon 11/1611:50 pm
SEA
- FSD
1 stop8h 42m
United Airlines
Deal found 6/8![United Airlines logo]()
$532
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Sat 9/126:00 am
FSD
- SEA
2 stops12h 14m
United Airlines
Sat 9/198:40 am
SEA
- FSD
2 stops12h 12m
United Airlines
Deal found 6/8![United Airlines logo]()
$537
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Sat 10/1011:35 am
FSD
- SEA
2 stops11h 26m
United Airlines
Wed 10/147:11 am
SEA
- FSD
2 stops11h 09m
United Airlines
Deal found 6/8![United Airlines logo]()
$537
Last-minute flights from Sioux Falls to SeattleDiscover last-minute flight deals from Sioux Falls to Seattle. Data last updated June 12, 2026 and is based on user searches.
Discover last-minute flight deals from Sioux Falls to Seattle. Data last updated June 12, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/11. 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 6/302:13 pm
FSD
- SEA
1 stop8h 51m
American Airlines
Fri 7/37:26 am
SEA
- FSD
1 stop7h 28m
American Airlines
Deal found 6/11![American Airlines logo]()
$364
This CheapOair deal was found by Cheapflights users on 6/7. 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.
Fri 7/38:14 pm
FSD
- SEA
1 stop20h 04m
Frontier
Tue 7/77:06 pm
SEA
- FSD
1 stop22h 17m
Frontier
Deal found 6/7![Frontier logo]()
$340
This Delta deal was found by Cheapflights users on 6/9. 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.
Tue 7/75:00 am
FSD
- SEA
1 stop5h 45m
Delta
Tue 7/142:30 pm
SEA
- FSD
1 stop6h 36m
Delta
Deal found 6/9![Delta logo]()
$419
This CheapOair deal was found by Cheapflights users on 6/11. 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.
Wed 7/88:08 pm
FSD
- SEA
1 stop15h 09m
Frontier
Tue 7/147:06 pm
SEA
- FSD
1 stop22h 17m
Frontier
Deal found 6/11![Frontier logo]()
$320
This CheapOair deal was found by Cheapflights users on 6/9. 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.
Mon 7/138:08 pm
FSD
- SEA
1 stop15h 09m
Frontier
Thu 7/237:06 pm
SEA
- FSD
1 stop22h 17m
Frontier
Deal found 6/9![Frontier logo]()
$318
This CheapOair deal was found by Cheapflights users on 6/8. 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.
Fri 7/178:08 pm
FSD
- SEA
1 stop17h 12m
Frontier
Tue 7/217:06 pm
SEA
- FSD
1 stop22h 17m
Frontier
Deal found 6/8![Frontier logo]()
$349
This CheapOair deal was found by Cheapflights users on 6/10. 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.
Wed 7/228:08 pm
FSD
- SEA
1 stop15h 09m
Frontier
Thu 7/307:06 pm
SEA
- FSD
1 stop22h 17m
Frontier
Deal found 6/10![Frontier logo]()
$299
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/226:51 pm
FSD
- SEA
1 stop6h 19m
United Airlines
Wed 8/192:34 pm
SEA
- FSD
1 stop7h 10m
United Airlines
Deal found 6/8![United Airlines logo]()
$374
This American Airlines deal was found by Cheapflights users on 6/10. 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 7/225:34 pm
FSD
- SEA
1 stop9h 23m
American Airlines
Wed 8/122:47 pm
SEA
- FSD
1 stop7h 01m
American Airlines
Deal found 6/10![American Airlines logo]()
$379
This CheapOair deal was found by Cheapflights users on 6/9. 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.
Fri 7/318:08 pm
FSD
- SEA
1 stop15h 09m
Frontier
Sun 8/97:06 pm
SEA
- FSD
1 stop22h 17m
Frontier
Deal found 6/9![Frontier logo]()
$369
One-way flights from Sioux Falls to SeattleSearch for one-way flight options from Sioux Falls to Seattle. Find affordable one-way fares based on user searches. Data last updated June 12, 2026.
Search for one-way flight options from Sioux Falls to Seattle. Find affordable one-way fares based on user searches. Data last updated June 12, 2026.
This CheapOair deal was found by Cheapflights users on 6/8. 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.
Wed 8/128:08 pm
FSD
- SEA
1 stop14h 56m
Frontier
Deal found 6/8![Frontier logo]()
$146
This CheapOair deal was found by Cheapflights users on 6/7. 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.
Mon 7/208:08 pm
FSD
- SEA
1 stop15h 09m
Frontier
Deal found 6/7![Frontier logo]()
$165
This CheapOair deal was found by Cheapflights users on 6/7. 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.
Fri 7/248:08 pm
FSD
- SEA
1 stop15h 09m
Frontier
Deal found 6/7![Frontier logo]()
$166
This American Airlines deal was found by Cheapflights users on 6/8. 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.
Thu 11/128:05 am
FSD
- SEA
1 stop8h 03m
American Airlines
Deal found 6/8![American Airlines logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Sun 8/169:47 pm
FSD
- SEA
2 stops38h 01m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$205
This CheapOair deal was found by Cheapflights users on 6/10. 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.
Mon 6/228:14 pm
FSD
- SEA
1 stop15h 34m
Frontier
Deal found 6/10![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Fri 8/148:08 pm
FSD
- SEA
1 stop14h 56m
Frontier
Deal found 6/8![Frontier logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Sun 6/289:28 pm
FSD
- SEA
2 stops22h 58m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$266
This Delta deal was found by Cheapflights users on 6/8. 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.
Tue 8/114:28 pm
FSD
- SEA
1 stop7h 32m
Delta
Deal found 6/8![Delta logo]()
$268
This American Airlines deal was found by Cheapflights users on 6/7. 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 7/212:15 pm
FSD
- SEA
1 stop8h 50m
American Airlines
Deal found 6/7![American Airlines logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 6/7. 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.
Fri 7/2411:46 am
FSD
- SEA
2 stops23h 31m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$276
Find flight deals from Sioux Falls to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to Seattle (SEA). 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 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $260 (CheapOair) |
One-way from | $146 (CheapOair) |
Popular in | June |
Cheapest in | January |
Average price | $571 |
Cheapflights Fare Finder
Customize your flight search to find flights from Sioux Falls to Seattle 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 12, 2026.
Use the filters below to find and compare flights from Sioux Falls to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Sioux FallsSeattle
FSD - SEA
FSDSEA
Sioux Falls Joe Foss Field
Wed 8/26
5:00 am-8:48 am
1 stop5h 48m
Seattle/Tacoma Intl
Sat 9/5
2:30 pm-10:51 pm
1 stop6h 21m
$339
Sioux FallsSeattle
FSD - SEA
FSDSEA
Sioux Falls Joe Foss Field
Wed 8/26
6:50 pm-11:04 pm
1 stop6h 14m
Seattle/Tacoma Intl
Tue 9/1
11:03 am-11:22 pm
2 stops10h 19m
$434
Sioux FallsSeattle
FSD - SEA
FSDSEA
Sioux Falls Joe Foss Field
Wed 9/23
9:35 am-1:22 pm
1 stop5h 47m
Seattle/Tacoma Intl
Sat 9/26
1:22 pm-11:44 pm
2 stops8h 22m
$434
Sioux FallsSeattle
FSD - SEA
FSDSEA
Sioux Falls Joe Foss Field
Wed 8/26
7:47 am-7:08 pm
2 stops13h 21m
Seattle/Tacoma Intl
Sat 9/5
11:00 pm-10:29 am
1 stop9h 29m
$469
Sioux FallsSeattle
FSD - SEA
FSDSEA
Sioux Falls Joe Foss Field
Sat 10/24
7:50 am-8:37 pm
2 stops14h 47m
Seattle/Tacoma Intl
Wed 10/28
9:02 am-10:56 pm
2 stops11h 54m
$470
Quickest round-trip
Sioux FallsSeattle
FSD - SEA
FSDSEA
Sioux Falls Joe Foss Field
Wed 6/24
6:51 pm-11:10 pm
1 stop6h 19m
Seattle/Tacoma Intl
Wed 7/1
5:00 am-12:35 pm
1 stop5h 35m
$490
Sioux FallsSeattle
FSD - SEA
FSDSEA
Sioux Falls Joe Foss Field
Wed 9/2
11:25 am-11:26 pm
2 stops14h 01m
Seattle/Tacoma Intl
Thu 9/10
1:57 pm-10:52 pm
1 stop6h 55m
$532
Sioux FallsSeattle
FSD - SEA
FSDSEA
Sioux Falls Joe Foss Field
Thu 11/12
7:40 am-8:10 pm
2 stops14h 30m
Seattle/Tacoma Intl
Mon 11/16
11:50 pm-10:32 am
1 stop8h 42m
$532
Sioux FallsSeattle
FSD - SEA
FSDSEA
Sioux Falls Joe Foss Field
Sat 9/12
6:00 am-4:14 pm
2 stops12h 14m
Seattle/Tacoma Intl
Sat 9/19
8:40 am-10:52 pm
2 stops12h 12m
$537
Sioux FallsSeattle
FSD - SEA
FSDSEA
Sioux Falls Joe Foss Field
Sat 10/10
11:35 am-9:01 pm
2 stops11h 26m
Seattle/Tacoma Intl
Wed 10/14
7:11 am-8:20 pm
2 stops11h 09m
$537
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Sioux Falls to Seattle
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 Sioux Falls to Seattle in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Sioux Falls-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux Falls-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sioux Falls-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Sioux Falls-Seattle 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 Sioux Falls-Seattle 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 Sioux Falls to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Sioux Falls with our price prediction graph.
FSD-SEA
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 Sioux Falls to Seattle
How far ahead should I book a flight from Sioux Falls to Seattle?
The price you pay for your flight from Sioux Falls to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 34 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 Sioux Falls to Seattle?
Currently, January is the cheapest month in which you can book a flight from Sioux Falls to Seattle (average of $306). Flying from Sioux Falls to Seattle in June is currently the most expensive (average of $571). 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 Sioux Falls to Seattle?
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated June 12, 2026.
Read through reviews of airlines operating flights from Sioux Falls to Seattle, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Overall
7.9
Food
7.2
Comfort
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Boarding
8.1
Overall
7.9
Food
7.2
Comfort
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Boarding
8.1
Overall
7.9
Food
7.2
Comfort
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Boarding
8.1
Overall
7.9
Food
7.2
Comfort
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Boarding
8.1
Overall
7.9
Food
7.2
Comfort
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Related info for your journey
Find useful and relevant information for your journey from Sioux Falls to Seattle. 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 Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Marysville
Shoreline
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Sioux Falls and Seattle flights
Browse other Sioux Falls and Seattle flight options. Last updated on June 12, 2026.
Other flights from Sioux Falls
Browse through other flights departing from Sioux Falls. Flights are based on user searches made on Cheapflights and were last updated on June 12, 2026.
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Top 4 airlines flying from Sioux Falls to Seattle
Discover the top 4 airlines that operate flights from Sioux Falls to Seattle. 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 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$190 | Average$305 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$228 | Average$418 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$268 | Average$421 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$284 | Average$459 | FlexibilityNo cancel fee | On-time69% |