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

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

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 - Baltimore/Washington or Sioux City Sioux Gateway - Washington, D.C. Reagan-National.

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

Monday flights are found to be more expensive to fly from Sioux City to Washington, D.C.. 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 Washington, D.C..

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

One of the essential ways to save on airfare from Sioux City to Washington, D.C. is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 21% on airfare.

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 1 airline.

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.

$332+ Flights from Sioux City to Washington, D.C.

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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

Round-trip from	$369 (United Airlines)
One-way from	$332 (United Airlines)

From Sioux City Sioux Gateway to Washington, D.C. (WAS)

Search Deals

One-way flight from Sioux City Sioux Gateway to Washington, D.C. (WAS)

Search Deals

Find 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 July 30, 2025.

Tue 10/147:50 amSUX - DCA

1 stop5h 26mUnited Airlines

Tue 10/217:00 pmDCA - SUX

1 stop5h 00mUnited Airlines

Deal found 7/28

$369

Tue 10/146:51 pmSUX - IAD

1 stop9h 31mUnited Airlines

Tue 10/216:50 pmIAD - SUX

1 stop5h 10mUnited Airlines

Deal found 7/28

$468

Tue 10/147:50 amSUX - BWI

1 stop5h 18mUnited Airlines

Tue 10/215:20 pmBWI - SUX

1 stop6h 40mUnited Airlines

Deal found 7/28

$586

Best flights from Sioux City to Washington, D.C.
Discover carefully curated flight deals from Sioux City to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 30, 2025.

Tue 10/147:50 amSUX - DCA

1 stop5h 26mUnited Airlines

Tue 10/217:00 pmDCA - SUX

1 stop5h 00mUnited Airlines

Deal found 7/28

$369

Tue 10/146:51 pmSUX - IAD

1 stop9h 31mUnited Airlines

Tue 10/216:50 pmIAD - SUX

1 stop5h 10mUnited Airlines

Deal found 7/28

$468

Tue 10/147:50 amSUX - BWI

1 stop5h 18mUnited Airlines

Tue 10/215:20 pmBWI - SUX

1 stop6h 40mUnited Airlines

Deal found 7/28

$586

Last-minute flights from Sioux City to Washington, D.C.
Discover last-minute flight deals from Sioux City to Washington, D.C.. Data last updated July 30, 2025 and is based on user searches.

Sun 8/106:53 pmSUX - IAD

1 stop9h 31mUnited Airlines

Wed 8/133:39 pmIAD - SUX

1 stop8h 01mUnited Airlines

Deal found 7/29

$840

Sun 8/106:53 pmSUX - BWI

1 stop9h 17mUnited Airlines

Wed 8/1310:05 amBWI - SUX

1 stop9h 13mUnited Airlines

Deal found 7/29

$843

Sun 8/106:53 pmSUX - DCA

2 stops12h 29mUnited Airlines

Wed 8/135:00 pmDCA - SUX

1 stop6h 40mUnited Airlines

Deal found 7/29

$1,002

One-way flights from Sioux City to Washington, D.C.
Search for one-way flight options from Sioux City to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated July 30, 2025.

Mon 8/1810:10 amSUX - DCA

1 stop5h 51mUnited Airlines

Deal found 7/30

$332

Mon 8/1810:10 amSUX - IAD

1 stop6h 20mUnited Airlines

Deal found 7/30

$423

Mon 8/1810:10 amSUX - BWI

2 stops11h 35mUnited Airlines

Deal found 7/30

$685

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Tue 10/14

7:50 am-2:16 pm

1 stop5h 26m

Washington, D.C. Reagan-National

Tue 10/21

7:00 pm-11:00 pm

1 stop5h 00m

$369

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Tue 10/14

6:51 pm-5:22 am

1 stop9h 31m

Washington, D.C. Dulles Intl

Tue 10/21

6:50 pm-11:00 pm

1 stop5h 10m

$468

Sioux CityBaltimore

SUX - BWI

SUXBWI

Sioux City Sioux Gateway

Tue 10/14

7:50 am-2:08 pm

1 stop5h 18m

Baltimore/Washington

Tue 10/21

5:20 pm-11:00 pm

1 stop6h 40m

$586

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Mon 8/18

10:10 am-5:01 pm

1 stop5h 51m

$332

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Mon 8/18

10:10 am-5:30 pm

1 stop6h 20m

$423

Sioux CityBaltimore

SUX - BWI

SUXBWI

Sioux City Sioux Gateway

Mon 8/18

10:10 am-10:45 pm

2 stops11h 35m

$685

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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, August is the cheapest month in which you can book a flight from Sioux City to Washington, D.C. (average of $241). Flying from Sioux City to Washington, D.C. in March is currently the most expensive (average of $290). 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.

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from Sioux City to Washington, D.C., 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

8,896 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

8,896 reviews

United Airlines

7.4

Good

8,896 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 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 1 airline.
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 - Baltimore/Washington or Sioux City Sioux Gateway - Washington, D.C. Reagan-National.
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, August is the cheapest month in which you can book a flight from Sioux City to Washington, D.C. (average of $241). Flying from Sioux City to Washington, D.C. in March is currently the most expensive (average of $290). 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

Woodbridge

Arlington

Alexandria

Tysons

Silver Spring

Fredericksburg

Gaithersburg

Towson

Linthicum Heights

Easton

Fairfax

Manassas

Falls Church

Waldorf

Laurel

Rockville

Oxon Hill

National Harbor

Dundalk

Bowie

Browse thousands of different options on Cheapflights for your next trip

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

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$269	Average$483	FlexibilityNo cancel fee	On-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.

$332+ Cheap flights from Sioux City (SUX) to Washington, D.C. (WAS)

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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.

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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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

Round-trip from

One-way from

Find 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 July 30, 2025.

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 July 30, 2025.

Cheapflights Fare Finder

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

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.

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.?

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from Sioux City to Washington, D.C., 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 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.?

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

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

How can I 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.?

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

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

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.

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

See prices for flight routes from nearby airports that may be better suited for you.

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

100% Free

Book with Flexibility

Travel Smart

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 July 30, 2025.