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

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

In terms of precipitation, rainfall in Sioux City ranges from 0.7 - 4.2 inches per month. June is typically the wettest month, when rainfall can reach 4.2 in. January is typically the driest time to visit Sioux City when rainfall is around 0.7 in.

If weather is an important factor for your trip to Sioux City, 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 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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

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

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

Located just 7.0 mi from the city center, Sioux City Sioux Gateway is the airport most travelers will use when flying to Sioux City from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Sioux Gateway (SUX) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 0 different airlines.

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

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

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

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

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

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

$635+ Flights from Washington, D.C. Dulles Intl Airport to Sioux City

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Cheap flight deals from Dulles Intl to Sioux City

Round-trip from	$635 (United Airlines)

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

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Cheapest flights from Dulles Intl to Sioux City
Explore the most affordable flight options available from Dulles Intl to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Thu 7/246:35 amIAD - SUX

1 stop17h 05mUnited Airlines

Mon 7/286:53 pmSUX - IAD

1 stop15h 34mUnited Airlines

Deal found 7/1

$635

Best flights from Dulles Intl to Sioux City
Discover carefully curated flight deals from Dulles Intl to Sioux City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Thu 7/246:35 amIAD - SUX

1 stop17h 05mUnited Airlines

Mon 7/286:53 pmSUX - IAD

1 stop15h 34mUnited Airlines

Deal found 7/1

$635

Last-minute flights from Dulles Intl to Sioux City
Discover last-minute flight deals from Dulles Intl to Sioux City. Data last updated July 3, 2025 and is based on user searches.

Sun 7/1310:10 amIAD - SUX

1 stop9h 08mUnited Airlines

Tue 7/156:53 pmSUX - IAD

1 stop28h 52mUnited Airlines

Deal found 7/1

$792

Thu 7/246:35 amIAD - SUX

1 stop17h 05mUnited Airlines

Mon 7/286:53 pmSUX - IAD

1 stop15h 34mUnited Airlines

Deal found 7/1

$635

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Thu 7/24

6:35 am-10:40 pm

1 stop17h 05m

Sioux City Sioux Gateway

Mon 7/28

6:53 pm-11:27 am

1 stop15h 34m

$635

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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

Have a flexible travel schedule? Discover the best time to fly to Sioux City from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Sioux City

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sioux City (average of $318). Flying from Washington, D.C. Dulles Intl Airport to Sioux City in March is currently the most expensive (average of $446). 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 Sioux City

Read reviews from past customers who have flown United Airlines from Washington, D.C. Dulles Intl Airport to Sioux City. 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

8,861 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

8,861 reviews

United Airlines

7.4

Good

8,861 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 into for flights to Sioux City from Washington, D.C. Dulles Intl?
Located just 7.0 mi from the city center, Sioux City Sioux Gateway is the airport most travelers will use when flying to Sioux City from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Sioux Gateway (SUX) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 0 different airlines.
Can I find deals for flights from Dulles Intl to Sioux City that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Sioux City flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Sioux City?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Sioux City.
Can I find deals for business class flights from Dulles Intl to Sioux City?
Yes. Cheapflights offers flight deals from Dulles Intl to Sioux City 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 Washington, D.C. Dulles Intl Airport to Sioux City?
Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sioux City (average of $318). Flying from Washington, D.C. Dulles Intl Airport to Sioux City in March is currently the most expensive (average of $446). 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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$635+ Cheap flights from Dulles Intl (IAD) to Sioux City (SUX)

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 7/24. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Sioux City with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Dulles Intl to Sioux City

Round-trip from

Find flight deals from Dulles Intl to Sioux City

Cheapest flights from Dulles Intl to Sioux CityExplore the most affordable flight options available from Dulles Intl to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Explore the most affordable flight options available from Dulles Intl to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Cheapflights Fare Finder

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

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

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

Cheapflights Insights

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

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

Reviews of airlines servicing Sioux City

Read reviews from past customers who have flown United Airlines from Washington, D.C. Dulles Intl Airport to Sioux City. 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 Dulles Intl to Sioux City. 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 into for flights to Sioux City from Washington, D.C. Dulles Intl?

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

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

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

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Cheapest flights from Dulles Intl to Sioux City
Explore the most affordable flight options available from Dulles Intl to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.