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 5h 52m. 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.

Most accurate provider : When it comes to deals on Sioux City-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux City-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sioux City-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Sioux City-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sioux City-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$285+ Cheap 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

Best

Last-minute

One-way

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 September 10, 2026.

Fri 10/236:58 pm -

1 stop9h 19m

Sun 10/2510:10 pm -

1 stop26h 33m

Deal found 9/6

$684

Tue 9/228:06 am -

1 stop6h 55m

Sat 9/261:10 pm -

1 stop5h 43m

Deal found 9/7

$769

Thu 9/246:58 pm -

1 stop9h 19m

Mon 9/281:10 pm -

1 stop5h 43m

Deal found 9/8

$823

Wed 9/168:05 am -

1 stop4h 50m

Thu 9/174:15 pm -

1 stop8h 28m

Deal found 9/9

$1,100

Mon 9/146:35 pm -

1 stop27h 44m

Wed 9/161:10 pm -

1 stop5h 42m

Deal found 9/8

$1,279

Last-minute flights from Sioux City to Dulles Intl
Discover last-minute flight deals from Sioux City to Dulles Intl. Data last updated September 10, 2026 and is based on user searches.

Mon 9/146:35 pm -

1 stop27h 44m

Wed 9/161:10 pm -

1 stop5h 42m

Deal found 9/8

$1,279

Wed 9/168:05 am -

1 stop4h 50m

Thu 9/174:15 pm -

1 stop8h 28m

Deal found 9/9

$1,100

Tue 9/228:06 am -

1 stop6h 55m

Sat 9/261:10 pm -

1 stop5h 43m

Deal found 9/7

$769

Thu 9/246:58 pm -

1 stop9h 19m

Mon 9/281:10 pm -

1 stop5h 43m

Deal found 9/8

$823

Fri 10/236:58 pm -

1 stop9h 19m

Sun 10/2510:10 pm -

1 stop26h 33m

Deal found 9/6

$684

Find flight deals from Sioux City to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$523 (United Airlines)
One-way from	$285 (United Airlines)

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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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Return

Price

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Sioux CityWashington, D.C.

SUX Sioux City Sioux Gateway - IAD Washington, D.C. Dulles Intl

SUXIAD

Sioux City Sioux Gateway

Tue 10/20

6:58 pm-5:17 am

1 stop9h 19m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$285

Sioux CityWashington, D.C.

SUX Sioux City Sioux Gateway - IAD Washington, D.C. Dulles Intl

SUXIAD

Sioux City Sioux Gateway

Sat 1/30

9:03 am-3:55 pm

1 stop5h 52m

Washington, D.C. Dulles Intl

Wed 2/3

12:49 pm-5:54 pm

1 stop6h 05m

$543

Sioux CityWashington, D.C.

SUX Sioux City Sioux Gateway - IAD Washington, D.C. Dulles Intl

SUXIAD

Sioux City Sioux Gateway

Fri 10/23

8:35 am-11:49 am

2 stops26h 14m

Washington, D.C. Dulles Intl

Sun 10/25

10:35 pm-6:10 pm

2 stops20h 35m

$777

Sioux CityWashington, D.C.

SUX Sioux City Sioux Gateway - IAD Washington, D.C. Dulles Intl

SUXIAD

Sioux City Sioux Gateway

Tue 9/22

8:06 am-9:05 pm

2 stops11h 59m

Washington, D.C. Dulles Intl

Sat 9/26

4:12 pm-11:43 pm

1 stop8h 31m

$842

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/7

Sorted by cheapest first

Most accurate provider: When it comes to deals on Sioux City-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux City-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sioux City-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Sioux City-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sioux City-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

SUX-IAD

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.

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 5h 52m. 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.

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$285+ 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 10/20. 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 September 10, 2026.

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 September 10, 2026.

Best flights from Sioux City to Dulles IntlDiscover 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 September 10, 2026.

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 September 10, 2026.

Last-minute flights from Sioux City to Dulles IntlDiscover last-minute flight deals from Sioux City to Dulles Intl. Data last updated September 10, 2026 and is based on user searches.

Discover last-minute flight deals from Sioux City to Dulles Intl. Data last updated September 10, 2026 and is based on user searches.

One-way flights from Sioux City to Dulles IntlSearch for one-way flight options from Sioux City to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Search for one-way flight options from Sioux City to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

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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

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Related info for your journey

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?

Traveling to a place near 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 September 10, 2026.

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 September 10, 2026.

Last-minute flights from Sioux City to Dulles Intl
Discover last-minute flight deals from Sioux City to Dulles Intl. Data last updated September 10, 2026 and is based on user searches.

One-way flights from Sioux City to Dulles Intl
Search for one-way flight options from Sioux City to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.