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$299+ Cheap flights from Sioux City (SUX) to Washington

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 3/20. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — SEA
feb. 26 — mar. 51
jue. 2/26
jue. 3/5
1 adult, Economy
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Cheap flight deals from Sioux City to Washington

Cheapest flights from Sioux City to Washington
Explore the most affordable flight options available from Sioux City to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 27, 2026.

This United Airlines deal was found by Cheapflights users on 1/27. 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.
vie. 3/206:10 am
SUX
-
PDX
1 stop5h 44m
United Airlines
mié. 3/253:52 pm
PDX
-
SUX
1 stop5h 49m
United Airlines
Deal found 1/27$299
This United Airlines deal was found by Cheapflights users on 1/26. 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.
jue. 3/56:30 pm
SUX
-
PDX
1 stop6h 29m
United Airlines
mié. 3/113:52 pm
PDX
-
SUX
1 stop5h 49m
United Airlines
Deal found 1/26$354
This United Airlines deal was found by Cheapflights users on 1/26. 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.
mar. 3/31:00 pm
SUX
-
SEA
1 stop8h 03m
United Airlines
sáb. 3/77:00 am
SEA
-
SUX
1 stop8h 41m
United Airlines
Deal found 1/26$397
This United Airlines deal was found by Cheapflights users on 1/26. 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.
jue. 3/196:30 pm
SUX
-
PDX
1 stop6h 30m
United Airlines
mié. 3/251:39 pm
PDX
-
SUX
2 stops8h 02m
United Airlines
Deal found 1/26$425
This United Airlines deal was found by Cheapflights users on 1/25. 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.
mié. 3/41:00 pm
SUX
-
PDX
1 stop7h 49m
United Airlines
sáb. 3/75:05 am
PDX
-
SUX
1 stop26h 40m
United Airlines
Deal found 1/25$450
This United Airlines deal was found by Cheapflights users on 1/27. 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.
mié. 2/116:00 am
SUX
-
SEA
1 stop5h 55m
United Airlines
dom. 2/152:55 pm
SEA
-
SUX
1 stop6h 47m
United Airlines
Deal found 1/27$483
This United Airlines deal was found by Cheapflights users on 1/25. 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.
vie. 2/66:00 am
SUX
-
SEA
1 stop5h 55m
United Airlines
lun. 2/99:00 am
SEA
-
SUX
2 stops12h 47m
United Airlines
Deal found 1/25$488
This United Airlines deal was found by Cheapflights users on 1/25. 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.
mar. 2/312:45 pm
SUX
-
GEG
2 stops10h 38m
United Airlines
sáb. 2/75:00 am
GEG
-
SUX
2 stops10h 28m
United Airlines
Deal found 1/25$489
This United Airlines deal was found by Cheapflights users on 1/26. 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.
mar. 2/1012:45 pm
SUX
-
GEG
2 stops10h 37m
United Airlines
sáb. 2/144:02 pm
GEG
-
SUX
1 stop5h 40m
United Airlines
Deal found 1/26$636
This United Airlines deal was found by Cheapflights users on 1/27. 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.
vie. 7/106:00 am
SUX
-
GEG
2 stops19h 38m
United Airlines
lun. 7/201:45 pm
GEG
-
SUX
1 stop18h 54m
United Airlines
Deal found 1/27$690

Find flight deals from Sioux City to Washington

Keep the following information in mind while searching for Sioux City to Washington flight deals. Data was last updated enero 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$354
(United Airlines)
Provider with most accurate pricing for Sioux City Sioux Gateway-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux City Sioux Gateway-Seattle/Tacoma Intl flights.
Search Deals
From Sioux City Sioux Gateway to Washington
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux City to Washington 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 enero 27, 2026.
Use the filters below to find and compare flights from Sioux City to Washington that are best for you.

Fly from

Sioux City

Fly to

Washington

Route

Depart

Return

Price

Sioux CityPortland

SUX - PDX

SUXPDX

Sioux City Sioux Gateway

vie. 3/20

6:30 pm-11:00 pm

1 stop6h 30m

Portland

mié. 3/25

3:52 pm-11:41 pm

1 stop5h 49m

$354

Sioux CityPortland

SUX - PDX

SUXPDX

Sioux City Sioux Gateway

jue. 3/5

6:30 pm-10:59 pm

1 stop6h 29m

Portland

mié. 3/11

3:52 pm-11:41 pm

1 stop5h 49m

$354

Sioux CityPortland

SUX - PDX

SUXPDX

Sioux City Sioux Gateway

jue. 3/19

6:10 am-9:54 am

1 stop5h 44m

Portland

mié. 3/25

3:52 pm-11:41 pm

1 stop5h 49m

$354

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

mar. 3/3

6:00 am-9:49 am

1 stop5h 49m

Seattle/Tacoma Intl

sáb. 3/7

3:40 pm-11:41 pm

1 stop6h 01m

$397

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

mié. 2/11

6:00 am-9:55 am

1 stop5h 55m

Seattle/Tacoma Intl

dom. 2/15

2:55 pm-11:42 pm

1 stop6h 47m

$483

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

vie. 2/6

6:00 am-9:55 am

1 stop5h 55m

Seattle/Tacoma Intl

lun. 2/9

9:00 am-11:47 pm

2 stops12h 47m

$488

Sioux CitySpokane

SUX - GEG

SUXGEG

Sioux City Sioux Gateway

mar. 2/10

12:45 pm-9:22 pm

2 stops10h 37m

Spokane

sáb. 2/14

4:02 pm-11:42 pm

1 stop5h 40m

$636

Sioux CitySpokane

SUX - GEG

SUXGEG

Sioux City Sioux Gateway

sáb. 7/11

6:00 am-6:34 pm

2 stops14h 34m

Spokane

lun. 7/20

5:00 am-10:39 am

1 stop27h 39m

$690

Sioux CitySpokane

SUX - GEG

SUXGEG

Sioux City Sioux Gateway

vie. 7/10

6:00 am-11:38 pm

2 stops19h 38m

Spokane

lun. 7/20

1:45 pm-10:39 am

1 stop18h 54m

$690

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Best time to book a flight from Sioux City to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Sioux City 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 Sioux City to Washington

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

Currently, March is the cheapest month in which you can book a flight from Sioux City to State of Washington (average of $126). Flying from Sioux City to State of Washington in June is currently the most expensive (average of $282). 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 Sioux City to Washington. 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 from for flights from Sioux City to Washington?

    Sioux City Sioux Gateway (SUX), located 7.0 mi from the city center, is the airport you fly out of when you book flights from Sioux City to Washington.

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

    United Airlines can get you from Sioux City to State of Washington in just under 6h 30m. Your travel time can differ by up to . The distance between Sioux City and State of Washington is about 1314 mi.

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

    Most travelers choose Sioux City Sioux Gateway - Portland, Sioux City Sioux Gateway - Seattle/Tacoma Intl or Sioux City Sioux Gateway - Spokane when deciding on the best route from Sioux City to State of Washington.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sioux City to Washington 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 Sioux City to State of Washington?

    Currently, March is the cheapest month in which you can book a flight from Sioux City to State of Washington (average of $126). Flying from Sioux City to State of Washington in June is currently the most expensive (average of $282). 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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