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Sioux City

$290+ Cheap flights from Washington, D.C. (WAS) 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SUX
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Sioux City

Cheapest flights from Washington, D.C. to Sioux City
Explore the most affordable flight options available from Washington, D.C. to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 8, 2026.

This United Airlines deal was found by Cheapflights users on 2/5. 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 2/2712:00 pm
DCA
-
SUX
1 stop6h 41m
United Airlines
Fri 3/612:53 pm
SUX
-
DCA
1 stop7h 06m
United Airlines
Deal found 2/5$290
This United Airlines deal was found by Cheapflights users on 2/5. 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 2/274:09 pm
BWI
-
SUX
1 stop8h 33m
United Airlines
Fri 3/612:53 pm
SUX
-
BWI
1 stop7h 49m
United Airlines
Deal found 2/5$299
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Sat 2/284:10 pm
BWI
-
SUX
1 stop8h 32m
United Airlines
Wed 3/41:00 pm
SUX
-
BWI
1 stop7h 17m
United Airlines
Deal found 2/7$344
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Thu 2/2610:30 am
DCA
-
SUX
1 stop8h 11m
United Airlines
Mon 3/21:00 pm
SUX
-
DCA
1 stop5h 12m
United Airlines
Deal found 2/7$359
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Thu 2/261:02 pm
IAD
-
SUX
1 stop5h 39m
United Airlines
Mon 3/21:00 pm
SUX
-
IAD
1 stop7h 18m
United Airlines
Deal found 2/7$359
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Fri 2/274:09 pm
BWI
-
SUX
1 stop8h 33m
United Airlines
Mon 3/21:00 pm
SUX
-
BWI
1 stop7h 17m
United Airlines
Deal found 2/7$384
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Thu 2/264:09 pm
BWI
-
SUX
1 stop8h 33m
United Airlines
Mon 3/21:00 pm
SUX
-
BWI
1 stop7h 17m
United Airlines
Deal found 2/7$404
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Fri 2/274:09 pm
BWI
-
SUX
1 stop8h 33m
United Airlines
Sat 2/281:00 pm
SUX
-
BWI
1 stop7h 17m
United Airlines
Deal found 2/7$418
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Thu 2/264:09 pm
BWI
-
SUX
1 stop8h 33m
United Airlines
Sat 2/281:00 pm
SUX
-
BWI
1 stop7h 17m
United Airlines
Deal found 2/7$438
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Sat 2/284:11 pm
DCA
-
SUX
1 stop19h 34m
United Airlines
Wed 3/41:00 pm
SUX
-
DCA
1 stop5h 12m
United Airlines
Deal found 2/7$442
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Sat 2/285:10 pm
IAD
-
SUX
1 stop18h 35m
United Airlines
Wed 3/41:00 pm
SUX
-
IAD
1 stop7h 18m
United Airlines
Deal found 2/7$442
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Sat 2/2810:30 am
DCA
-
SUX
1 stop8h 11m
United Airlines
Mon 3/21:00 pm
SUX
-
DCA
1 stop5h 12m
United Airlines
Deal found 2/7$452

Find flight deals from Washington, D.C. to Sioux City

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Sioux City (SUX). 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 February 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$290
(United Airlines)
Provider with most accurate pricing for Washington, D.C. (WAS)-Sioux City Sioux Gateway flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Sioux City Sioux Gateway flights.
Search Deals
From Washington, D.C. (WAS) to Sioux City Sioux Gateway
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 February 8, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Sioux City that are best for you.

Fly from

Washington, D.C.

Fly to

Sioux City

Route

Depart

Return

Price

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Fri 2/27

12:00 pm-5:41 pm

1 stop6h 41m

Sioux City Sioux Gateway

Fri 3/6

12:53 pm-8:59 pm

1 stop7h 06m

$290

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Fri 2/27

4:09 pm-11:42 pm

1 stop8h 33m

Sioux City Sioux Gateway

Fri 3/6

12:53 pm-9:42 pm

1 stop7h 49m

$299

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Sat 2/28

4:10 pm-11:42 pm

1 stop8h 32m

Sioux City Sioux Gateway

Wed 3/4

1:00 pm-9:17 pm

1 stop7h 17m

$344

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Sat 2/28

4:10 pm-11:42 pm

1 stop8h 32m

Sioux City Sioux Gateway

Mon 3/2

1:00 pm-9:17 pm

1 stop7h 17m

$344

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Fri 2/27

1:00 pm-5:41 pm

1 stop5h 41m

Sioux City Sioux Gateway

Mon 3/2

1:00 pm-7:12 pm

1 stop5h 12m

$359

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Thu 2/26

10:30 am-5:41 pm

1 stop8h 11m

Sioux City Sioux Gateway

Mon 3/2

1:00 pm-7:12 pm

1 stop5h 12m

$359

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Thu 2/26

1:02 pm-5:41 pm

1 stop5h 39m

Sioux City Sioux Gateway

Mon 3/2

1:00 pm-9:18 pm

1 stop7h 18m

$359

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Fri 2/27

4:09 pm-11:42 pm

1 stop8h 33m

Sioux City Sioux Gateway

Mon 3/2

1:00 pm-9:17 pm

1 stop7h 17m

$384

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Thu 2/26

4:09 pm-11:42 pm

1 stop8h 33m

Sioux City Sioux Gateway

Mon 3/2

1:00 pm-9:17 pm

1 stop7h 17m

$404

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Fri 2/27

4:09 pm-11:42 pm

1 stop8h 33m

Sioux City Sioux Gateway

Sat 2/28

1:00 pm-9:17 pm

1 stop7h 17m

$418

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 17 results
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Compare providers for flights from Washington, D.C. to Sioux City

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 Washington, D.C. to Sioux City in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C.-Sioux City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Sioux City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Sioux City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Sioux City 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 Washington, D.C.-Sioux City 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 Washington, D.C. to Sioux City

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

What is the cheapest month to book a flight from Washington, D.C. to Sioux City?

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Sioux City (average of $126). Flying from Washington, D.C. to Sioux City in April is currently the most expensive (average of $268). 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.

Reviews of airlines servicing Sioux City

Get insights into the airlines that provide service to Sioux City. 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 City. Reviews last updated February 8, 2026.
Read through reviews of airlines operating flights from Washington, D.C. to Sioux City, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,257 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,257 reviews
United Airlines
7.4
Good
9,257 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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, D.C.?

    Sioux City Sioux Gateway (SUX) is the airport you will fly into if you book a flight from Washington, D.C. to Sioux City. You should not have trouble finding flights to Sioux Gateway from Washington, D.C.; the airport handles an average of 0 inbound flights from Washington, D.C. per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Sioux City airport from Washington, D.C.. It is only a 7.0 mi journey from Sioux Gateway (SUX) to Sioux City’s city center.

  • How long is the flight from Washington, D.C. to Sioux City?

    There are many flights that can get you from Washington, D.C. to Sioux City in 6h 41m. Fly via United Airlines to get the fastest option. There are 1040 mi between Washington, D.C. and Sioux City.

  • What are the most popular routes from Washington, D.C. to Sioux City?

    Most travelers choose Baltimore/Washington - Sioux City Sioux Gateway, Washington, D.C. Reagan-National - Sioux City Sioux Gateway or Washington, D.C. Dulles Intl - Sioux City Sioux Gateway when deciding on the best route from Washington, D.C. to Sioux City.

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

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

  • How can I find direct flights from Washington, D.C. 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, D.C. to Sioux City.

  • Can I find deals for business class flights from Washington, D.C. to Sioux City?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to Sioux City?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Sioux City (average of $126). Flying from Washington, D.C. to Sioux City in April is currently the most expensive (average of $268). 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Washington, D.C. to Sioux City

Discover the top airline that operate flights from Washington, D.C. 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 February 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$263Average$533FlexibilityNo cancel feeOn-time69%

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