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Sioux City

$139+ Cheap flights from Washington to Sioux City (SUX)

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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SUX
mar 4 — mar 111
qua 3/4
qua 3/11
1 adult, Economy
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Cheap flight deals from Washington to Sioux City

Cheapest flights from Washington to Sioux City
Explore the most affordable flight options available from Washington to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on fevereiro 2, 2026.

This United Airlines deal was found by Cheapflights users on 1/29. 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.
ter 10/277:11 am
PDX
-
SUX
1 stop8h 21m
United Airlines
sáb 10/3112:45 pm
SUX
-
PDX
1 stop7h 20m
United Airlines
Deal found 1/29$354
This United Airlines deal was found by Cheapflights users on 1/30. 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.
sex 4/107:05 pm
SEA
-
SUX
1 stop13h 41m
United Airlines
ter 4/146:00 am
SUX
-
SEA
1 stop5h 46m
United Airlines
Deal found 1/30$421
This United Airlines deal was found by Cheapflights users on 1/31. 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.
ter 2/104:10 pm
GEG
-
SUX
1 stop5h 37m
United Airlines
sáb 2/141:00 pm
SUX
-
GEG
1 stop7h 16m
United Airlines
Deal found 1/31$474
This United Airlines deal was found by Cheapflights users on 1/31. 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.
seg 2/167:00 am
SEA
-
SUX
1 stop8h 41m
United Airlines
sex 2/206:46 pm
SUX
-
SEA
1 stop6h 13m
United Airlines
Deal found 1/31$531
This United Airlines deal was found by Cheapflights users on 1/29. 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.
sáb 1/317:00 am
SEA
-
SUX
1 stop8h 28m
United Airlines
dom 2/16:00 am
SUX
-
SEA
1 stop5h 55m
United Airlines
Deal found 1/29$534
This United Airlines deal was found by Cheapflights users on 1/30. 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.
dom 2/154:00 pm
PDX
-
SUX
1 stop5h 42m
United Airlines
qui 2/196:46 pm
SUX
-
PDX
1 stop6h 28m
United Airlines
Deal found 1/30$534
This United Airlines deal was found by Cheapflights users on 1/31. 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.
seg 3/25:00 am
PSC
-
SUX
1 stop27h 45m
United Airlines
seg 3/96:30 pm
SUX
-
PSC
1 stop21h 13m
United Airlines
Deal found 1/31$562
This United Airlines deal was found by Cheapflights users on 1/30. 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.
ter 2/105:00 am
PSC
-
SUX
2 stops10h 28m
United Airlines
sáb 2/146:46 pm
SUX
-
PSC
1 stop28h 04m
United Airlines
Deal found 1/30$571
This United Airlines deal was found by Cheapflights users on 1/31. 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.
seg 2/1612:44 pm
PSC
-
SUX
1 stop20h 01m
United Airlines
qui 2/266:46 pm
SUX
-
PSC
1 stop28h 04m
United Airlines
Deal found 1/31$590
This United Airlines deal was found by Cheapflights users on 1/30. 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.
sáb 2/143:25 pm
SEA
-
SUX
1 stop6h 17m
United Airlines
qua 2/186:00 am
SUX
-
SEA
1 stop5h 49m
United Airlines
Deal found 1/30$629
This United Airlines deal was found by Cheapflights users on 1/30. 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.
qua 6/172:36 pm
SEA
-
SUX
1 stop7h 06m
United Airlines
qui 6/256:49 pm
SUX
-
SEA
1 stop15h 11m
United Airlines
Deal found 1/30$637
This United Airlines deal was found by Cheapflights users on 1/31. 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.
dom 2/1512:44 pm
PSC
-
SUX
2 stops26h 57m
United Airlines
qui 2/191:00 pm
SUX
-
PSC
2 stops9h 50m
United Airlines
Deal found 1/31$742

Find flight deals from Washington to Sioux City

Keep the following information in mind while searching for Washington to Sioux City flight deals. Data was last updated fevereiro 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$421
(United Airlines)

One-way from

$139
(United Airlines)
Provider with most accurate pricing for Seattle/Tacoma Intl-Sioux City Sioux Gateway flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sioux City Sioux Gateway flights.
Search Deals
From Washington to Sioux City Sioux Gateway
Search Deals
One-way flight from Washington to Sioux City Sioux Gateway
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Sioux City 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 fevereiro 2, 2026.
Use the filters below to find and compare flights from Washington to Sioux City that are best for you.

Fly from

Washington

Fly to

Sioux City

Route

Depart

Return

Price

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

sex 4/10

7:05 pm-10:46 am

1 stop13h 41m

Sioux City Sioux Gateway

ter 4/14

6:00 am-9:46 am

1 stop5h 46m

$421

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

seg 2/16

7:00 am-5:41 pm

1 stop8h 41m

Sioux City Sioux Gateway

sex 2/20

6:46 pm-10:59 pm

1 stop6h 13m

$531

PortlandSioux City

PDX - SUX

PDXSUX

Portland

dom 2/15

4:00 pm-11:42 pm

1 stop5h 42m

Sioux City Sioux Gateway

qui 2/19

6:46 pm-11:14 pm

1 stop6h 28m

$534

PascoSioux City

PSC - SUX

PSCSUX

Pasco Tri Cities

seg 3/2

5:00 am-10:45 am

1 stop27h 45m

Sioux City Sioux Gateway

seg 3/9

6:30 pm-1:43 pm

1 stop21h 13m

$562

PascoSioux City

PSC - SUX

PSCSUX

Pasco Tri Cities

seg 2/16

3:05 pm-11:42 pm

2 stops30h 37m

Sioux City Sioux Gateway

qui 2/26

6:46 pm-8:50 pm

1 stop28h 04m

$617

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

sáb 2/14

3:25 pm-11:42 pm

1 stop6h 17m

Sioux City Sioux Gateway

qua 2/18

6:00 am-9:49 am

1 stop5h 49m

$629

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

qua 6/17

2:36 pm-11:42 pm

1 stop7h 06m

Sioux City Sioux Gateway

qui 6/25

6:49 pm-8:00 am

1 stop15h 11m

$637

PascoSioux City

PSC - SUX

PSCSUX

Pasco Tri Cities

dom 2/15

12:44 pm-5:41 pm

2 stops26h 57m

Sioux City Sioux Gateway

qui 2/19

1:00 pm-8:50 pm

2 stops9h 50m

$742

PortlandSioux City

PDX - SUX

PDXSUX

Portland

ter 3/10

3:52 pm-11:41 pm

1 stop5h 49m

$139

PortlandSioux City

PDX - SUX

PDXSUX

Portland

seg 3/9

3:52 pm-11:41 pm

1 stop5h 49m

$196

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Showing 1-10 of 11 results
1
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Best time to book a flight from Washington to Sioux City

Have a flexible travel schedule? Discover the best time to fly to Sioux City from Washington with our price prediction graph.
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 Washington to Sioux City

What is the cheapest month to book a flight from State of Washington to Sioux City?

Currently, March is the cheapest month in which you can book a flight from State of Washington to Sioux City (average of $99). Flying from State of Washington to Sioux City in September is currently the most expensive (average of $225). 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.

Related info for your journey

Find useful and relevant information for your journey from Washington to Sioux City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sioux City from Washington?

    For a flight from Washington to Sioux City, you will be flying into Sioux Gateway. Sioux City Sioux Gateway (SUX) is just 7.0 mi from the center of the city.

  • How long is the flight from State of Washington to Sioux City?

    A quick flight from State of Washington to Sioux City can take about 13h 41m. United Airlines provides one of the quickest options available for as low as $421. The distance between State of Washington and Sioux City is about 1308 mi.

  • What are the most popular routes from State of Washington to Sioux City?

    The most popular route from State of Washington to Sioux City is Seattle/Tacoma Intl - Sioux City Sioux Gateway. You may also consider Spokane - Sioux City Sioux Gateway or Walla Walla - Sioux City Sioux Gateway.

  • Can I find deals for flights from Washington to Sioux City that include hotel bookings?

    Yes. In addition to deals on Washington to Sioux City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Sioux City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Sioux City.

  • Can I find deals for business class flights from Washington to Sioux City?

    Yes. Cheapflights offers flight deals from Washington to Sioux City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Sioux City?

    Currently, March is the cheapest month in which you can book a flight from State of Washington to Sioux City (average of $99). Flying from State of Washington to Sioux City in September is currently the most expensive (average of $225). 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.

See more FAQs

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Top airline flying from Washington to Sioux City

Discover the top airline that operate flights from Washington to Sioux City. 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 fevereiro 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$253Average$453FlexibilityNo cancel feeOn-time69%

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