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Washington, D.C.

$267+ Cheap flights from Sioux City (SUX) to Washington, D.C. (WAS)

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.
SUX — WAS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Sioux City to Washington, D.C.

Cheapest flights from Sioux City to Washington, D.C.
Explore the most affordable flight options available from Sioux City to Washington, D.C.. 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 12/317:50 amSUX - DCA
1 stop15h 09mUnited Airlines
Sun 1/46:00 pmDCA - SUX
1 stop6h 15mUnited Airlines
Deal found 12/16$581
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 12/317:50 amSUX - BWI
1 stop12h 36mUnited Airlines
Sun 1/45:19 pmBWI - SUX
1 stop6h 56mUnited Airlines
Deal found 12/16$644
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 12/317:50 amSUX - IAD
1 stop8h 40mUnited Airlines
Sun 1/41:00 pmIAD - SUX
1 stop11h 15mUnited Airlines
Deal found 12/16$835

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

Discover tips and strategies to find the most affordable flight options for your journey from Sioux City (SUX) to Washington, D.C. (WAS). 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$267
(United Airlines)
Provider with most accurate pricing for Sioux City Sioux Gateway-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux City Sioux Gateway-Washington, D.C. (WAS) flights.
Search Deals
From Sioux City Sioux Gateway to Washington, D.C. (WAS)
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux City to Washington, D.C. 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 Sioux City to Washington, D.C. that are best for you.

Fly from

Sioux City

Fly to

Washington, D.C.

Route

Depart

Return

Price

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Tue 1/20

12:45 pm-9:17 pm

1 stop7h 32m

Washington, D.C. Dulles Intl

Sun 2/1

1:05 pm-5:28 pm

1 stop5h 23m

$267

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Fri 2/20

1:00 pm-7:12 pm

1 stop5h 12m

Washington, D.C. Reagan-National

Tue 2/24

1:00 pm-5:41 pm

1 stop5h 41m

$344

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Sat 1/10

12:45 pm-9:00 pm

1 stop7h 15m

Washington, D.C. Reagan-National

Wed 1/14

12:00 pm-5:28 pm

1 stop6h 28m

$344

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Fri 1/30

12:45 pm-7:13 pm

1 stop5h 28m

Washington, D.C. Reagan-National

Fri 2/6

12:00 pm-5:28 pm

1 stop6h 28m

$344

Sioux CityBaltimore

SUX - BWI

SUXBWI

Sioux City Sioux Gateway

Fri 2/20

1:00 pm-9:17 pm

1 stop7h 17m

Baltimore/Washington

Tue 2/24

10:30 am-5:41 pm

1 stop8h 11m

$344

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Fri 1/30

12:45 pm-9:17 pm

1 stop7h 32m

Washington, D.C. Dulles Intl

Fri 2/6

1:05 pm-5:28 pm

1 stop5h 23m

$344

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Sat 2/7

12:45 pm-9:17 pm

1 stop7h 32m

Washington, D.C. Dulles Intl

Tue 2/10

8:20 am-11:47 pm

2 stops16h 27m

$433

Sioux CityBaltimore

SUX - BWI

SUXBWI

Sioux City Sioux Gateway

Fri 1/30

12:45 pm-9:21 pm

1 stop7h 36m

Baltimore/Washington

Fri 2/6

4:10 pm-11:47 pm

1 stop8h 37m

$464

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Thu 1/1

7:50 am-2:17 pm

1 stop5h 27m

Washington, D.C. Reagan-National

Mon 1/5

5:00 pm-11:15 pm

1 stop7h 15m

$472

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Sat 2/14

6:46 pm-3:44 pm

1 stop19h 58m

Washington, D.C. Dulles Intl

Wed 2/18

8:20 am-11:42 pm

2 stops16h 22m

$535

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 14 results
1
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  • Most accurate provider: When it comes to deals on Sioux City-Washington, D.C. flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Sioux City-Washington, D.C. flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Sioux City-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sioux City-Washington, D.C. 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 Sioux City-Washington, D.C. 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 Sioux City to Washington, D.C.

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

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

Currently, October is the cheapest month in which you can book a flight from Sioux City to Washington, D.C. (average of $84). Flying from Sioux City to Washington, D.C. in June is currently the most expensive (average of $277). 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, D.C.. 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, D.C.?

    If you book a flight to Washington, D.C. from Sioux City, you will be flying from Sioux Gateway, which is the city’s only airport. Sioux City Sioux Gateway (SUX) is located 7.0 mi from the center of Sioux City. There are 0 flights from Sioux Gateway to Washington, D.C. per day from 0 different airlines.

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

    There are many flights that can get you from Sioux City to Washington, D.C. in 7h 32m. Fly via United Airlines to get the fastest option. Sioux City and Washington, D.C. are separated by a distance of 1017 mi.

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

    The most popular route from Sioux City to Washington, D.C. is Sioux City Sioux Gateway - Washington, D.C. Dulles Intl. You may also consider Sioux City Sioux Gateway - Washington, D.C. Reagan-National or Sioux City Sioux Gateway - Baltimore/Washington.

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

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

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

    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, D.C..

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

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

    Currently, October is the cheapest month in which you can book a flight from Sioux City to Washington, D.C. (average of $84). Flying from Sioux City to Washington, D.C. in June is currently the most expensive (average of $277). 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

Traveling to a place near Washington, D.C.?

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