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$194+ Cheap flights from Washington, D.C. (WAS) 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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SUX
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap 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 September 15, 2025.

Round-trip from

$296
(United Airlines)

One-way from

$194
(United Airlines)
From Washington, D.C. (WAS) to Sioux City Sioux Gateway
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One-way flight from Washington, D.C. (WAS) to Sioux City Sioux Gateway
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Find 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 September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/14. 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 10/147:05 pmBWI - SUX
1 stop4h 55mUnited Airlines
Tue 10/217:50 amSUX - BWI
1 stop5h 18mUnited Airlines
Deal found 9/14$296
This United Airlines deal was found by Cheapflights users on 9/14. 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 10/157:05 pmBWI - SUX
1 stop4h 55mUnited Airlines
Wed 10/226:51 pmSUX - BWI
1 stop27h 27mUnited Airlines
Deal found 9/14$470
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/26:04 pmDCA - SUX
1 stop5h 56mUnited Airlines
Sat 10/47:50 amSUX - DCA
1 stop5h 11mUnited Airlines
Deal found 9/15$575
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/110:10 amBWI - SUX
1 stop9h 04mUnited Airlines
Fri 10/36:51 pmSUX - BWI
1 stop19h 22mUnited Airlines
Deal found 9/15$649
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/15:00 pmDCA - SUX
1 stop7h 00mUnited Airlines
Fri 10/36:51 pmSUX - DCA
1 stop19h 16mUnited Airlines
Deal found 9/15$678
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/110:09 pmIAD - SUX
1 stop21h 05mUnited Airlines
Fri 10/36:51 pmSUX - IAD
1 stop17h 35mUnited Airlines
Deal found 9/15$696
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 10/137:59 pmDCA - SUX
1 stop28h 01mUnited Airlines
Wed 10/156:51 pmSUX - DCA
2 stops12h 30mUnited Airlines
Deal found 9/14$712

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 September 15, 2025.
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

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Tue 10/14

7:05 pm-11:00 pm

1 stop4h 55m

Sioux City Sioux Gateway

Tue 10/21

7:50 am-2:08 pm

1 stop5h 18m

$296

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Tue 2/24

4:06 pm-11:34 pm

1 stop8h 28m

Sioux City Sioux Gateway

Sat 2/28

12:45 pm-9:27 pm

1 stop7h 42m

$324

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Sat 3/7

11:30 am-5:32 pm

1 stop7h 02m

Sioux City Sioux Gateway

Tue 3/10

12:45 pm-8:43 pm

1 stop6h 58m

$324

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Fri 10/17

8:20 am-11:00 pm

2 stops15h 40m

Sioux City Sioux Gateway

Tue 10/21

7:50 am-1:51 pm

1 stop5h 01m

$433

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Wed 10/15

7:05 pm-11:00 pm

1 stop4h 55m

Sioux City Sioux Gateway

Wed 10/22

6:51 pm-11:18 pm

1 stop27h 27m

$470

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Thu 10/2

6:04 pm-11:00 pm

1 stop5h 56m

Sioux City Sioux Gateway

Sat 10/4

7:50 am-2:01 pm

1 stop5h 11m

$575

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Wed 10/1

5:00 pm-11:00 pm

1 stop7h 00m

Sioux City Sioux Gateway

Fri 10/3

6:51 pm-3:07 pm

1 stop19h 16m

$678

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Wed 10/1

10:09 pm-6:14 pm

1 stop21h 05m

Sioux City Sioux Gateway

Fri 10/3

6:51 pm-1:26 pm

1 stop17h 35m

$696

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Fri 10/17

5:20 pm-11:00 pm

1 stop6h 40m

$194

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Tue 10/28

5:00 pm-10:59 pm

1 stop6h 59m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 14 results
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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 $318). Flying from Washington, D.C. to Sioux City in March is currently the most expensive (average of $446). 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.

What is the cheapest time of day to fly from WAS to SUX?

Find hourly flight availability from Washington, D.C. to Sioux City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

It’s optimal to fly from Washington, D.C. to Sioux City in the afternoon. By choosing this option you can save up to 44% on the cost of your flight, compared to a flight at noon.

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 September 15, 2025.
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
8,929 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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 4h 55m. Fly via United Airlines to get the fastest option. There are 1052 mi between Washington, D.C. and Sioux City.

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

    Most travelers choose Washington, D.C. Reagan-National - Sioux City Sioux Gateway, Baltimore/Washington - 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 $318). Flying from Washington, D.C. to Sioux City in March is currently the most expensive (average of $446). 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$367Average$416FlexibilityNo cancel feeOn-time69%

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