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$369+ Cheap flights from Sioux City (SUX) to District of Columbia

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — IAD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Sioux City to District of Columbia

Keep the following information in mind while searching for Sioux City to District of Columbia flight deals. Data was last updated September 11, 2025.

Round-trip from

$369
(United Airlines)
From Sioux City Sioux Gateway to District of Columbia
Search Deals

Find flight deals from Sioux City to District of Columbia

Cheapest flights from Sioux City to District of Columbia
Explore the most affordable flight options available from Sioux City to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. 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 9/257:50 amSUX - DCA
1 stop5h 26mUnited Airlines
Mon 9/295:00 pmDCA - SUX
1 stop7h 00mUnited Airlines
Deal found 9/10$393
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/227:50 amSUX - DCA
1 stop5h 26mUnited Airlines
Sun 10/266:00 pmDCA - SUX
1 stop5h 59mUnited Airlines
Deal found 9/11$446
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/226:51 pmSUX - IAD
1 stop9h 31mUnited Airlines
Sun 10/266:30 amIAD - SUX
1 stop17h 29mUnited Airlines
Deal found 9/11$462
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/156:51 pmSUX - DCA
2 stops14h 37mUnited Airlines
Sun 10/197:25 amDCA - SUX
1 stop16h 35mUnited Airlines
Deal found 9/11$564
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/256:51 pmSUX - IAD
1 stop9h 31mUnited Airlines
Mon 9/2910:20 pmIAD - SUX
2 stops20h 54mUnited Airlines
Deal found 9/10$638

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux City to District of Columbia 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 September 11, 2025.
Use the filters below to find and compare flights from Sioux City to District of Columbia that are best for you.

Fly from

Sioux City

Fly to

District of Columbia

Route

Depart

Return

Price

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Fri 3/6

12:45 pm-6:52 pm

1 stop5h 07m

Washington, D.C. Reagan-National

Tue 3/10

1:00 pm-5:32 pm

1 stop5h 32m

$369

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Thu 9/25

7:50 am-2:16 pm

1 stop5h 26m

Washington, D.C. Reagan-National

Mon 9/29

5:00 pm-11:00 pm

1 stop7h 00m

$393

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Wed 3/4

12:45 pm-7:35 am

2 stops17h 50m

Washington, D.C. Dulles Intl

Sat 3/7

1:05 pm-5:32 pm

1 stop5h 27m

$413

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Wed 10/22

7:50 am-2:16 pm

1 stop5h 26m

Washington, D.C. Reagan-National

Sun 10/26

6:00 pm-10:59 pm

1 stop5h 59m

$446

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Wed 10/22

6:51 pm-5:22 am

1 stop9h 31m

Washington, D.C. Dulles Intl

Sun 10/26

6:30 am-10:59 pm

1 stop17h 29m

$462

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Wed 10/15

6:51 pm-10:28 am

2 stops14h 37m

Washington, D.C. Reagan-National

Sun 10/19

7:25 am-11:00 pm

1 stop16h 35m

$564

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Thu 9/25

7:50 am-1:51 pm

1 stop5h 01m

Washington, D.C. Dulles Intl

Mon 9/29

6:50 pm-11:00 pm

1 stop5h 10m

$811

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Best time to book a flight from Sioux City to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia 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 District of Columbia

What is the cheapest month to book a flight from Sioux City to District of Columbia?

Currently, August is the cheapest month in which you can book a flight from Sioux City to District of Columbia (average of $292). Flying from Sioux City to District of Columbia in April is currently the most expensive (average of $337). 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 District of Columbia. 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 District of Columbia?

    Sioux City Sioux Gateway (SUX) is the airport you will fly out of if you book a flight from Sioux City to District of Columbia. It is only a 7.0 mi journey to Sioux Gateway (SUX) from Sioux City’s city center.

  • How long is the flight from Sioux City to District of Columbia?

    United Airlines can get you from Sioux City to District of Columbia in just under 5h 07m. Your travel time can differ by up to . Airlines will cover a distance of 1040 mi.

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

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

  • How can I find direct flights from Sioux City to District of Columbia?

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

  • Can I find deals for business class flights from Sioux City to District of Columbia?

    Yes. Cheapflights offers flight deals from Sioux City to District of Columbia 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 District of Columbia?

    Currently, August is the cheapest month in which you can book a flight from Sioux City to District of Columbia (average of $292). Flying from Sioux City to District of Columbia in April is currently the most expensive (average of $337). 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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