In terms of precipitation, rainfall in District of Columbia 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 District of Columbia when rainfall is around 2.6 in.

If weather is an important factor for your trip to District of Columbia, 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 is the cheapest time of day to fly from SUX to DC?

When flying from Sioux City to District of Columbia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How can I find direct flights from Sioux City to District of Columbia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sioux City to District of Columbia.

Can I find deals for business class flights from Sioux City to District of Columbia?

Yes. Cheapflights offers flight deals from Sioux City to District of Columbia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$369+ Flights from Sioux City to District of Columbia

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Cheap flight deals from Sioux City to District of Columbia

Round-trip from	$369 (United Airlines)

From Sioux City Sioux Gateway to District of Columbia

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Find flight deals from Sioux City to District of Columbia

Cheapest flights from Sioux City to District of Columbia
Explore the most affordable flight options available from Sioux City to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 29, 2025.

mar. 10/147:50 amSUX - DCA

1 stop5h 26mUnited Airlines

mar. 10/217:00 pmDCA - SUX

1 stop5h 00mUnited Airlines

Deal found 7/28

$369

mar. 10/146:51 pmSUX - IAD

1 stop9h 31mUnited Airlines

mar. 10/216:50 pmIAD - SUX

1 stop5h 10mUnited Airlines

Deal found 7/28

$468

Best flights from Sioux City to District of Columbia
Discover carefully curated flight deals from Sioux City to District of Columbia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 29, 2025.

mar. 10/147:50 amSUX - DCA

1 stop5h 26mUnited Airlines

mar. 10/217:00 pmDCA - SUX

1 stop5h 00mUnited Airlines

Deal found 7/28

$369

mar. 10/146:51 pmSUX - IAD

1 stop9h 31mUnited Airlines

mar. 10/216:50 pmIAD - SUX

1 stop5h 10mUnited Airlines

Deal found 7/28

$468

Last-minute flights from Sioux City to District of Columbia
Discover last-minute flight deals from Sioux City to District of Columbia. Data last updated julio 29, 2025 and is based on user searches.

lun. 8/1110:10 amSUX - DCA

1 stop6h 52mUnited Airlines

vie. 8/156:00 pmDCA - SUX

1 stop5h 40mUnited Airlines

Deal found 7/27

$692

Cheapflights Fare Finder

Use the filters below to find and compare flights from Sioux City to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

mar. 10/14

7:50 am-2:16 pm

1 stop5h 26m

Washington, D.C. Reagan-National

mar. 10/21

7:00 pm-11:00 pm

1 stop5h 00m

$369

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

mar. 10/14

6:51 pm-5:22 am

1 stop9h 31m

Washington, D.C. Dulles Intl

mar. 10/21

6:50 pm-11:00 pm

1 stop5h 10m

$468

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Sioux City to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia 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 District of Columbia

What is the cheapest month to book a flight from Sioux City to District of Columbia?

Currently, August is the cheapest month in which you can book a flight from Sioux City to District of Columbia (average of $241). Flying from Sioux City to District of Columbia 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 District of Columbia

See what other customers who have flown with United Airlines from Sioux City to District of Columbia have to say. Users can see the overall rating for each airline as well as how each is rated in terms of 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 District of Columbia?
Sioux City Sioux Gateway (SUX) is the airport you will fly out of if you book a flight from Sioux City to District of Columbia. It is only a 7.0 mi journey to Sioux Gateway (SUX) from Sioux City’s city center.
Can I find deals for flights from Sioux City to District of Columbia that include hotel bookings?
Yes. In addition to deals on Sioux City to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Sioux City to District of Columbia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sioux City to District of Columbia.
Can I find deals for business class flights from Sioux City to District of Columbia?
Yes. Cheapflights offers flight deals from Sioux City to District of Columbia 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 District of Columbia?
Currently, August is the cheapest month in which you can book a flight from Sioux City to District of Columbia (average of $241). Flying from Sioux City to District of Columbia 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Sioux City to District of Columbia

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$269	Average$483	FlexibilityNo cancel fee	On-time69%

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$369+ Cheap flights from Sioux City (SUX) to District of Columbia

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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Sioux City to District of Columbia 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 District of Columbia

Keep the following information in mind while searching for Sioux City to District of Columbia flight deals. Data was last updated julio 29, 2025.

Round-trip from

Find flight deals from Sioux City to District of Columbia

Cheapest flights from Sioux City to District of ColumbiaExplore the most affordable flight options available from Sioux City to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 29, 2025.

Explore the most affordable flight options available from Sioux City to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Sioux City to District of Columbia that are best for you.

Best time to book a flight from Sioux City to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Sioux City with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Sioux City to District of Columbia

What is the cheapest month to book a flight from Sioux City to District of Columbia?

Reviews of airlines servicing District of Columbia

See what other customers who have flown with United Airlines from Sioux City to District of Columbia have to say. Users can see the overall rating for each airline as well as how each is rated in terms of 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 District of Columbia. 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 District of Columbia?

Can I find deals for flights from Sioux City to District of Columbia that include hotel bookings?

How can I find direct flights from Sioux City to District of Columbia?

Can I find deals for business class flights from Sioux City to District of Columbia?

What is the cheapest month to book a flight from Sioux City to District of Columbia?

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 District of Columbia

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

Top airline flying from Sioux City to District of Columbia

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Sioux City to District of Columbia
Explore the most affordable flight options available from Sioux City to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 29, 2025.