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Sioux City

$302+ Cheap flights from Washington to Sioux City (SUX)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SUX
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:10 amPDX - SUX
1 stop7h 23mUnited Airlines
Fri 1/26:54 pmSUX - PDX
1 stop6h 05mUnited Airlines
Deal found 12/16$505
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/189:00 amPDX - SUX
2 stops12h 15mUnited Airlines
Sun 12/216:54 pmSUX - PDX
1 stop6h 05mUnited Airlines
Deal found 12/15$549
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:00 amPDX - SUX
2 stops10h 10mUnited Airlines
Sun 12/216:54 pmSUX - PDX
1 stop6h 05mUnited Airlines
Deal found 12/15$770
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 12/216:00 amGEG - SUX
2 stops10h 13mUnited Airlines
Tue 12/236:54 pmSUX - GEG
1 stop19h 51mUnited Airlines
Deal found 12/17$1,240

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$322
(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

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 December 18, 2025.
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

Tue 1/20

3:30 pm-11:47 pm

1 stop6h 17m

Sioux City Sioux Gateway

Sat 1/24

12:45 pm-6:14 pm

1 stop7h 29m

$322

PortlandSioux City

PDX - SUX

PDXSUX

Portland

Wed 1/7

7:00 am-5:28 pm

1 stop8h 28m

Sioux City Sioux Gateway

Sat 1/10

12:45 pm-6:56 pm

1 stop8h 11m

$354

SpokaneSioux City

GEG - SUX

GEGSUX

Spokane

Thu 1/8

4:10 pm-11:47 pm

1 stop5h 37m

Sioux City Sioux Gateway

Sat 1/10

12:45 pm-9:22 pm

2 stops10h 37m

$393

PascoSioux City

PSC - SUX

PSCSUX

Pasco Tri Cities

Thu 1/22

5:00 am-5:28 pm

2 stops10h 28m

Sioux City Sioux Gateway

Mon 1/26

6:43 pm-9:13 pm

1 stop28h 30m

$443

PortlandSioux City

PDX - SUX

PDXSUX

Portland

Wed 12/31

7:10 am-4:33 pm

1 stop7h 23m

Sioux City Sioux Gateway

Fri 1/2

6:54 pm-10:59 pm

1 stop6h 05m

$505

PascoSioux City

PSC - SUX

PSCSUX

Pasco Tri Cities

Fri 1/23

6:00 am-11:47 pm

2 stops15h 47m

Sioux City Sioux Gateway

Tue 1/27

12:45 pm-9:13 pm

2 stops10h 28m

$534

SpokaneSioux City

GEG - SUX

GEGSUX

Spokane

Wed 3/25

6:00 am-5:41 pm

1 stop9h 41m

Sioux City Sioux Gateway

Fri 4/3

12:45 pm-8:56 pm

2 stops34h 11m

$541

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

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 $224). 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 6h 17m. United Airlines provides one of the quickest options available for as low as $322. 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 Pasco Tri Cities - 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 $224). 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.

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$253Average$515FlexibilityNo cancel feeOn-time69%

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