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 38m. 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.

$398+ 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

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 October 25, 2026.

Tue 12/85:00 am -

1 stop7h 38m

Wed 12/91:00 pm -

1 stop6h 05m

Deal found 10/22

$398

Thu 11/196:00 am -

1 stop25h 49m

Thu 11/265:29 pm -

1 stop25h 41m

Deal found 10/21

$607

Sat 11/76:45 pm -

1 stop9h 34m

Wed 11/111:15 pm -

1 stop5h 55m

Deal found 10/22

$731

Sun 11/86:00 am -

1 stop4h 52m

Thu 11/121:15 pm -

1 stop5h 55m

Deal found 10/24

$792

Thu 11/126:45 pm -

1 stop25h 45m

Sun 11/1510:47 pm -

1 stop20h 23m

Deal found 10/24

$860

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 October 25, 2026.

Sat 1/305:04 am -

1 stop15h 14m

Wed 2/31:00 pm -

1 stop6h 11m

Deal found 10/22

$569

Thu 11/196:00 am -

1 stop25h 49m

Thu 11/2612:35 pm -

2 stops30h 35m

Deal found 10/21

$642

Tue 12/85:00 am -

2 stops16h 54m

Wed 12/96:05 am -

2 stops13h 00m

Deal found 10/22

$737

Sun 11/86:00 am -

1 stop4h 52m

Thu 11/121:15 pm -

1 stop5h 55m

Deal found 10/24

$792

Sat 11/76:45 pm -

1 stop9h 34m

Wed 11/118:15 am -

2 stops10h 55m

Deal found 10/22

$833

Last-minute flights from Sioux City to Dulles Intl
Discover last-minute flight deals from Sioux City to Dulles Intl. Data last updated October 25, 2026 and is based on user searches.

Thu 11/56:00 am -

1 stop6h 35m

Mon 11/910:15 am -

1 stop8h 55m

Deal found 10/21

$943

Sat 11/76:45 pm -

1 stop9h 34m

Wed 11/111:15 pm -

1 stop5h 55m

Deal found 10/22

$731

Sun 11/86:00 am -

1 stop4h 52m

Thu 11/121:15 pm -

1 stop5h 55m

Deal found 10/24

$792

Thu 11/126:45 pm -

1 stop25h 45m

Sun 11/1510:47 pm -

1 stop20h 23m

Deal found 10/24

$860

Thu 11/196:00 am -

1 stop25h 49m

Thu 11/265:29 pm -

1 stop25h 41m

Deal found 10/21

$607

Find flight deals from Sioux City to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$398 (United Airlines)

Provider with most accurate pricing for Sioux City Sioux Gateway-Washington, D.C. Dulles Intl flight deals.

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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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Fly to

Route

Depart

Return

Price

Cheapest round-trip

Sioux CityWashington, D.C.

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

SUXIAD

Sioux City Sioux Gateway

Sat 1/30

5:04 am-9:18 pm

1 stop15h 14m

Washington, D.C. Dulles Intl

Wed 2/3

1:00 pm-6:11 pm

1 stop6h 11m

$569

Sioux CityWashington, D.C.

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

SUXIAD

Sioux City Sioux Gateway

Thu 11/19

6:00 am-8:49 am

1 stop25h 49m

Washington, D.C. Dulles Intl

Thu 11/26

12:35 pm-6:10 pm

2 stops30h 35m

$642

Sioux CityWashington, D.C.

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

SUXIAD

Sioux City Sioux Gateway

Tue 12/8

5:00 am-10:54 pm

2 stops16h 54m

Washington, D.C. Dulles Intl

Wed 12/9

6:05 am-6:05 pm

2 stops13h 00m

$737

Quickest round-trip

Sioux CityWashington, D.C.

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

SUXIAD

Sioux City Sioux Gateway

Sun 11/8

6:00 am-11:52 am

1 stop4h 52m

Washington, D.C. Dulles Intl

Thu 11/12

1:15 pm-6:10 pm

1 stop5h 55m

$792

Sioux CityWashington, D.C.

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

SUXIAD

Sioux City Sioux Gateway

Sat 11/7

6:45 pm-5:19 am

1 stop9h 34m

Washington, D.C. Dulles Intl

Wed 11/11

8:15 am-6:10 pm

2 stops10h 55m

$833

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

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 7h 38m. 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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$398+ 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 12/8. 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 October 25, 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 October 25, 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 October 25, 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 October 25, 2026.

Last-minute flights from Sioux City to Dulles IntlDiscover last-minute flight deals from Sioux City to Dulles Intl. Data last updated October 25, 2026 and is based on user searches.

Discover last-minute flight deals from Sioux City to Dulles Intl. Data last updated October 25, 2026 and is based on user searches.

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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.

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?

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Other flights to Dulles Intl

Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 25, 2026.

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Sioux City and Dulles Intl flights

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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 October 25, 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 October 25, 2026.

Last-minute flights from Sioux City to Dulles Intl
Discover last-minute flight deals from Sioux City to Dulles Intl. Data last updated October 25, 2026 and is based on user searches.