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 $337.

What is the cheapest day to fly from Washington, D.C. to Sioux City?

Travelers seeking maximum savings on their Washington, D.C. to Sioux City flight should consider departing on Saturday afternoons when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

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

Most travelers choose Washington, D.C. Dulles Intl - Sioux City Sioux Gateway, Baltimore/Washington - Sioux City Sioux Gateway or Washington, D.C. Reagan-National - Sioux City Sioux Gateway when deciding on the best route from Washington, D.C. to Sioux City.

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

Wednesday flights are generally found to be more expensive for flights from Washington, D.C. to Sioux City. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Sioux City.

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.

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.

$337+ Flights from Washington, D.C. to Sioux City

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

Round-trip from	$337 (United Airlines)

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 July 31, 2025.

Fri 9/125:00 pmDCA - SUX

1 stop6h 57mUnited Airlines

Fri 9/197:49 amSUX - DCA

1 stop5h 27mUnited Airlines

Deal found 7/30

$337

Wed 9/1710:10 amBWI - SUX

1 stop9h 03mUnited Airlines

Sun 9/217:49 amSUX - BWI

1 stop4h 59mUnited Airlines

Deal found 7/30

$385

Wed 9/176:40 pmIAD - SUX

1 stop5h 17mUnited Airlines

Sun 9/216:48 pmSUX - IAD

1 stop9h 34mUnited Airlines

Deal found 7/30

$423

Best flights from Washington, D.C. to Sioux City
Discover carefully curated flight deals from Washington, D.C. to Sioux City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2025.

Fri 9/125:00 pmDCA - SUX

1 stop6h 57mUnited Airlines

Fri 9/197:49 amSUX - DCA

1 stop5h 27mUnited Airlines

Deal found 7/30

$337

Wed 9/1710:10 amBWI - SUX

1 stop9h 03mUnited Airlines

Sun 9/217:49 amSUX - BWI

1 stop4h 59mUnited Airlines

Deal found 7/30

$385

Wed 9/176:40 pmIAD - SUX

1 stop5h 17mUnited Airlines

Sun 9/216:48 pmSUX - IAD

1 stop9h 34mUnited Airlines

Deal found 7/30

$423

Last-minute flights from Washington, D.C. to Sioux City
Discover last-minute flight deals from Washington, D.C. to Sioux City. Data last updated July 31, 2025 and is based on user searches.

Fri 8/810:25 pmIAD - SUX

2 stops25h 15mUnited Airlines

Mon 8/116:53 pmSUX - IAD

1 stop15h 34mUnited Airlines

Deal found 7/29

$759

Fri 8/86:50 pmBWI - SUX

1 stop4h 50mUnited Airlines

Mon 8/1110:10 amSUX - BWI

1 stop22h 53mUnited Airlines

Deal found 7/29

$761

Sun 8/105:00 pmDCA - SUX

1 stop6h 40mUnited Airlines

Fri 8/1510:10 amSUX - DCA

1 stop23h 46mUnited Airlines

Deal found 7/30

$601

Tue 8/123:39 pmIAD - SUX

1 stop8h 01mUnited Airlines

Wed 8/136:53 pmSUX - IAD

1 stop9h 31mUnited Airlines

Deal found 7/29

$678

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Sioux City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Fri 9/12

5:00 pm-10:57 pm

1 stop6h 57m

Sioux City Sioux Gateway

Fri 9/19

7:49 am-2:16 pm

1 stop5h 27m

$337

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Wed 9/17

10:10 am-6:13 pm

1 stop9h 03m

Sioux City Sioux Gateway

Sun 9/21

7:49 am-1:48 pm

1 stop4h 59m

$385

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Wed 9/17

6:40 pm-10:57 pm

1 stop5h 17m

Sioux City Sioux Gateway

Sun 9/21

6:48 pm-5:22 am

1 stop9h 34m

$423

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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?

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

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

8,900 reviews

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

8,900 reviews

United Airlines

7.4

Good

8,900 reviews

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

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 $337.
What are the most popular routes from Washington, D.C. to Sioux City?
Most travelers choose Washington, D.C. Dulles Intl - Sioux City Sioux Gateway, Baltimore/Washington - Sioux City Sioux Gateway or Washington, D.C. Reagan-National - 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.

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Top airline flying from Washington, D.C. to Sioux City

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$367	Average$429	FlexibilityNo cancel fee	On-time69%

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$337+ Cheap flights from Washington, D.C. (WAS) to Sioux City (SUX)

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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.

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

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3. Compare prices and book

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

Round-trip from

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

Cheapest flights from Washington, D.C. to Sioux CityExplore 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 July 31, 2025.

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 July 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Sioux City that are best for you.

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.

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?

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 July 31, 2025.

Reviews of airlines servicing Sioux City

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.

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.?

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

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

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

How can I 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?

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

Traveling to a place near Sioux City?

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Alternative routes for Washington, D.C. to Sioux City

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Top airline flying from Washington, D.C. to Sioux City

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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 July 31, 2025.