How long is the flight from Sioux City to Washington, D.C. Dulles Intl Airport?

Airlines like United Airlines fly from Sioux City to Washington, D.C. Dulles Intl Airport in about 7h 32m. The time it takes to get you to your destination can typically vary by up to . Sioux City and Washington, D.C. Dulles Intl Airport are separated by a distance of 1017 mi.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Sioux City to Washington, D.C. Dulles Intl Airport as you normally would.

What airport do you fly from for flights from Sioux City to Washington, D.C. Dulles Intl?

For a flight from Sioux City to Washington, D.C. Dulles Intl, you will be flying from Sioux Gateway. Sioux City Sioux Gateway (SUX) is just 7.0 mi from the center of the city. Sioux Gateway is the only Sioux City airport and it handles 0 outbound flights to Washington, D.C. Dulles Intl per day. 0 airlines have flights to Washington, D.C. Dulles Intl from Sioux City Sioux Gateway on a regular basis.

Can I find deals for flights from Sioux City to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Sioux City to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Sioux City to Dulles Intl?

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

Can I find deals for business class flights from Sioux City to Dulles Intl?

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

$413+ Flights from Sioux City to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Sioux City to Dulles Intl

Cheapest flights from Sioux City to Dulles Intl
Explore the most affordable flight options available from Sioux City to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Tue 12/166:52 pmSUX - IAD

1 stop19h 09mUnited Airlines

Wed 12/175:15 pmIAD - SUX

1 stop6h 44mUnited Airlines

Deal found 12/11

$1,217

Best flights from Sioux City to Dulles Intl
Discover carefully curated flight deals from Sioux City to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Sat 2/712:45 pmSUX - IAD

1 stop7h 32mUnited Airlines

Tue 2/108:20 amIAD - SUX

2 stops16h 27mUnited Airlines

Deal found 12/9

$413

Last-minute flights from Sioux City to Dulles Intl
Discover last-minute flight deals from Sioux City to Dulles Intl. Data last updated December 12, 2025 and is based on user searches.

Tue 12/166:52 pmSUX - IAD

1 stop19h 09mUnited Airlines

Wed 12/175:15 pmIAD - SUX

1 stop6h 44mUnited Airlines

Deal found 12/11

$1,217

Find flight deals from Sioux City to Dulles Intl

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Round-trip from	$413 (United Airlines)

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From Sioux City Sioux Gateway to Washington, D.C. Dulles Intl

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

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Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Sat 2/7

12:45 pm-9:17 pm

1 stop7h 32m

Washington, D.C. Dulles Intl

Tue 2/10

8:20 am-11:47 pm

2 stops16h 27m

$413

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Deals found on 12/9

Best time to book a flight from Sioux City to Dulles Intl

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Estimated round-trip price

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Everything you need to know about your flight from Sioux City to Washington, D.C. Dulles Intl Airport

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

Currently, October is the cheapest month in which you can book a flight from Sioux City to Washington, D.C. Dulles Intl Airport (average of $84). Flying from Sioux City to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $473). 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.

Related info for your journey

What airport do you fly from for flights from Sioux City to Washington, D.C. Dulles Intl?
For a flight from Sioux City to Washington, D.C. Dulles Intl, you will be flying from Sioux Gateway. Sioux City Sioux Gateway (SUX) is just 7.0 mi from the center of the city. Sioux Gateway is the only Sioux City airport and it handles 0 outbound flights to Washington, D.C. Dulles Intl per day. 0 airlines have flights to Washington, D.C. Dulles Intl from Sioux City Sioux Gateway on a regular basis.
How long is the flight from Sioux City to Washington, D.C. Dulles Intl Airport?
Airlines like United Airlines fly from Sioux City to Washington, D.C. Dulles Intl Airport in about 7h 32m. The time it takes to get you to your destination can typically vary by up to . Sioux City and Washington, D.C. Dulles Intl Airport are separated by a distance of 1017 mi.
Can I find deals for flights from Sioux City to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Sioux City to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Sioux City to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sioux City to Dulles Intl.
Can I find deals for business class flights from Sioux City to Dulles Intl?
Yes. Cheapflights offers flight deals from Sioux City to Dulles Intl 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. Dulles Intl Airport?
Currently, October is the cheapest month in which you can book a flight from Sioux City to Washington, D.C. Dulles Intl Airport (average of $84). Flying from Sioux City to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $473). 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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$413+ Cheap flights from Sioux City (SUX) to Dulles Intl (IAD)

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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Sioux City to Dulles Intl with Cheapflights

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Cheap flight deals from Sioux City to Dulles Intl

Cheapest flights from Sioux City to Dulles IntlExplore the most affordable flight options available from Sioux City to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Explore the most affordable flight options available from Sioux City to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Find flight deals from Sioux City to Dulles Intl

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

Best time to book a flight from Sioux City to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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. Dulles Intl Airport

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

Related info for your journey

Find useful and relevant information for your journey from Sioux City to Dulles Intl. 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. Dulles Intl?

How long is the flight from Sioux City to Washington, D.C. Dulles Intl Airport?

Can I find deals for flights from Sioux City to Dulles Intl that include hotel bookings?

How can I find direct flights from Sioux City to Dulles Intl?

Can I find deals for business class flights from Sioux City to Dulles Intl?

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

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Cheapest flights from Sioux City to Dulles Intl
Explore the most affordable flight options available from Sioux City to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.