HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sioux City

$229+ 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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SUX
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Sioux City with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 12, 2025.

Round-trip from

$324
(United Airlines)

One-way from

$229
(United Airlines)
From Washington, D.C. (WAS) to Sioux City Sioux Gateway
Search Deals
One-way flight from Washington, D.C. (WAS) to Sioux City Sioux Gateway
Search Deals

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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 7/115:00 pmDCA - SUX
1 stop6h 40mUnited Airlines
Fri 7/1810:10 amSUX - DCA
1 stop5h 51mUnited Airlines
Deal found 6/11$324
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/95:20 pmBWI - SUX
1 stop6h 20mUnited Airlines
Tue 7/1510:10 amSUX - BWI
1 stop26h 38mUnited Airlines
Deal found 6/9$392
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 8/196:40 pmIAD - SUX
1 stop5h 17mUnited Airlines
Sun 8/247:49 amSUX - IAD
2 stops22h 46mUnited Airlines
Deal found 6/10$417

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 June 12, 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

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Fri 7/11

5:00 pm-10:40 pm

1 stop6h 40m

Sioux City Sioux Gateway

Fri 7/18

10:10 am-5:01 pm

1 stop5h 51m

$324

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Wed 7/9

5:20 pm-10:40 pm

1 stop6h 20m

Sioux City Sioux Gateway

Tue 7/15

10:10 am-1:48 pm

1 stop26h 38m

$392

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Tue 8/19

6:40 pm-10:57 pm

1 stop5h 17m

Sioux City Sioux Gateway

Sun 8/24

7:49 am-7:35 am

2 stops22h 46m

$417

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Tue 7/8

5:00 pm-10:40 pm

1 stop6h 40m

$229

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Tue 7/8

3:39 pm-10:40 pm

1 stop8h 01m

$229

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Tue 7/8

5:20 pm-10:40 pm

1 stop6h 20m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 June 12, 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.

Rainfall in Sioux City by month

Plan your trip to Sioux City by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sioux City ranges from 0.7 - 4.2 inches per month. June is typically the wettest month, when rainfall can reach 4.2 in. January is typically the driest time to visit Sioux City when rainfall is around 0.7 in.

Temperature in Sioux City by month

Plan your trip to Sioux City by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sioux City, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 June 12, 2025.
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Entertainment

7.0

Crew

8.1

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
8,790 reviews
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Entertainment

7.0

Crew

8.1

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.

  • What is the cheapest airline to fly from Washington, D.C. to Sioux City round-trip?

    Cheapflights users have booked flights from Washington, D.C. to Sioux City round-trip from $324.

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

    Most travelers choose Baltimore/Washington - Sioux City Sioux Gateway, Washington, D.C. Reagan-National - 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

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Norfolk

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$367Average$467FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.