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Washington, D.C.

$461+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — WAS
Mar 12 — Mar 191
Thu 3/12
Thu 3/19
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 February 10, 2026.

This United Airlines deal was found by Cheapflights users on 2/9. 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.
Tue 3/1012:53 pm
SUX
-
DCA
1 stop7h 06m
United Airlines
Thu 3/1210:30 am
DCA
-
SUX
1 stop8h 11m
United Airlines
Deal found 2/9$461
This United Airlines deal was found by Cheapflights users on 2/6. 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.
Tue 2/1012:45 pm
SUX
-
BWI
1 stop7h 36m
United Airlines
Sat 2/144:10 pm
BWI
-
SUX
1 stop8h 32m
United Airlines
Deal found 2/6$474
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.
Tue 2/171:00 pm
SUX
-
IAD
1 stop7h 18m
United Airlines
Sat 2/2110:30 pm
IAD
-
SUX
1 stop20h 11m
United Airlines
Deal found 2/7$514
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Tue 2/171:00 pm
SUX
-
DCA
1 stop6h 59m
United Airlines
Sat 2/2110:30 am
DCA
-
SUX
1 stop8h 11m
United Airlines
Deal found 2/8$534
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.
Tue 2/1012:45 pm
SUX
-
DCA
1 stop5h 28m
United Airlines
Sat 2/144:11 pm
DCA
-
SUX
1 stop8h 31m
United Airlines
Deal found 2/7$589
This United Airlines deal was found by Cheapflights users on 2/9. 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 3/1112:53 pm
SUX
-
DCA
1 stop5h 19m
United Airlines
Fri 3/138:00 am
DCA
-
SUX
2 stops27h 45m
United Airlines
Deal found 2/9$640
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Tue 2/1012:45 pm
SUX
-
DCA
1 stop5h 28m
United Airlines
Thu 2/1212:00 pm
DCA
-
SUX
1 stop6h 41m
United Airlines
Deal found 2/9$964
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Tue 2/106:00 am
SUX
-
BWI
1 stop8h 04m
United Airlines
Thu 2/124:09 pm
BWI
-
SUX
1 stop8h 33m
United Airlines
Deal found 2/9$974
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Tue 2/1012:45 pm
SUX
-
IAD
1 stop7h 32m
United Airlines
Thu 2/125:15 pm
IAD
-
SUX
2 stops25h 26m
United Airlines
Deal found 2/9$1,123

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 February 10, 2026.

Round-trip from

$461
(United Airlines)
From Sioux City Sioux Gateway to Washington, D.C. (WAS)
Search Deals

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 February 10, 2026.
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 - DCA

SUXDCA

Sioux City Sioux Gateway

Tue 3/10

12:53 pm-8:59 pm

1 stop7h 06m

Washington, D.C. Reagan-National

Thu 3/12

10:30 am-5:41 pm

1 stop8h 11m

$461

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Wed 3/11

12:53 pm-8:59 pm

1 stop7h 06m

Washington, D.C. Reagan-National

Fri 3/13

1:00 pm-5:41 pm

1 stop5h 41m

$534

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

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 February 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 06m. Fly via United Airlines to get the fastest option. Sioux City and Washington, D.C. are separated by a distance of 1040 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. Reagan-National. You may also consider Sioux City Sioux Gateway - Washington, D.C. Dulles Intl 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 February 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.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Laurel
Linthicum Heights
Rockville
Upper Marlboro
Manassas
Bowie
Largo
McLean
Clinton
Towson

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