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$292+ Cheap flights from Dulles Intl (IAD) 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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SUX
nov. 27 — déc. 41
jeu. 11/27
jeu. 12/4
1 adult, Economy
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Cheap flight deals from Dulles Intl to Sioux City

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) 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 octobre 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$324
(United Airlines)

One-way from

$292
(United Airlines)
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Sioux City Sioux Gateway flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Sioux City Sioux Gateway flights.
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From Washington, D.C. Dulles Intl to Sioux City Sioux Gateway
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One-way flight from Washington, D.C. Dulles Intl to Sioux City Sioux Gateway
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Find flight deals from Dulles Intl to Sioux City

Cheapest flights from Dulles Intl to Sioux City
Explore the most affordable flight options available from Dulles Intl to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octobre 28, 2025.

This United Airlines deal was found by Cheapflights users on 10/27. 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.
mer. 12/246:30 amIAD - SUX
1 stop17h 45mUnited Airlines
sam. 1/1012:45 pmSUX - IAD
2 stops17h 45mUnited Airlines
Deal found 10/27$637
This United Airlines deal was found by Cheapflights users on 10/26. 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.
ven. 12/1210:10 pmIAD - SUX
1 stop21h 00mUnited Airlines
jeu. 1/17:50 amSUX - IAD
2 stops22h 45mUnited Airlines
Deal found 10/26$661
This United Airlines deal was found by Cheapflights users on 10/27. 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.
lun. 11/1010:35 pmIAD - SUX
1 stop25h 24mUnited Airlines
mer. 11/126:46 pmSUX - IAD
1 stop9h 30mUnited Airlines
Deal found 10/27$742
This United Airlines deal was found by Cheapflights users on 10/28. 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.
sam. 12/276:20 amIAD - SUX
1 stop12h 53mUnited Airlines
jeu. 1/16:54 pmSUX - IAD
1 stop9h 25mUnited Airlines
Deal found 10/28$837

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl 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 octobre 28, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Sioux City that are best for you.

Fly from

Dulles Intl

Fly to

Sioux City

Route

Depart

Return

Price

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

mer. 12/24

6:30 am-11:15 pm

1 stop17h 45m

Sioux City Sioux Gateway

sam. 1/10

12:45 pm-7:30 am

2 stops17h 45m

$637

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

ven. 12/12

10:10 pm-6:10 pm

1 stop21h 00m

Sioux City Sioux Gateway

jeu. 1/1

7:50 am-7:35 am

2 stops22h 45m

$661

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

lun. 11/10

10:35 pm-10:59 pm

1 stop25h 24m

Sioux City Sioux Gateway

mer. 11/12

6:46 pm-5:16 am

1 stop9h 30m

$742

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

sam. 12/27

6:20 am-6:13 pm

1 stop12h 53m

Sioux City Sioux Gateway

jeu. 1/1

6:54 pm-5:19 am

1 stop9h 25m

$837

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

ven. 12/12

5:55 pm-6:10 pm

2 stops25h 15m

$292

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Compare providers for flights from Dulles Intl 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 Dulles Intl to Sioux City in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust 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. Dulles Intl Airport-Sioux City flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Sioux City flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Sioux City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Sioux City flights, Cheapflights users trust eDreams the most. eDreams 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. Dulles Intl Airport-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 Dulles Intl to Sioux City

Have a flexible travel schedule? Discover the best time to fly to Sioux City from Dulles Intl 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. Dulles Intl Airport to Sioux City

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sioux City (average of $193). Flying from Washington, D.C. Dulles Intl Airport to Sioux City in June is currently the most expensive (average of $403). 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 Dulles Intl 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. Dulles Intl?

    Located just 7.0 mi from the city center, Sioux City Sioux Gateway is the airport most travelers will use when flying to Sioux City from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Sioux Gateway (SUX) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 0 different airlines.

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

    Airlines like United Airlines fly from Washington, D.C. Dulles Intl Airport to Sioux City in about 17h 45m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 1017 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl 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. Dulles Intl Airport to Sioux City?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sioux City (average of $193). Flying from Washington, D.C. Dulles Intl Airport to Sioux City in June is currently the most expensive (average of $403). 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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