Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Washington, D.C. Dulles Intl Airport to Sioux City from $390

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Sioux City departing on 2/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Sioux City

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
10:30 pm - 5:41 pm
IAD
-
SUX
20h 11m
1 stop
United Airlines Logo
1:00 pm - 9:18 pm
SUX
-
IAD
7h 18m
1 stop
$390United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
8:15 am - 5:41 pm
IAD
-
SUX
10h 26m
1 stop
United Airlines Logo
1:00 pm - 9:18 pm
SUX
-
IAD
7h 18m
1 stop
$431United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
10:25 pm - 10:45 am
IAD
-
SUX
13h 20m
1 stop
United Airlines Logo
1:00 pm - 9:18 pm
SUX
-
IAD
7h 18m
1 stop
$442United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
10:30 pm - 5:41 pm
IAD
-
SUX
20h 11m
1 stop
United Airlines Logo
1:00 pm - 7:25 am
SUX
-
IAD
17h 25m
2 stops
$464United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
8:15 am - 11:42 pm
IAD
-
SUX
16h 27m
2 stops
United Airlines Logo
1:00 pm - 9:18 pm
SUX
-
IAD
7h 18m
1 stop
$499United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
8:20 am - 11:42 pm
IAD
-
SUX
16h 22m
2 stops
United Airlines Logo
1:00 pm - 9:18 pm
SUX
-
IAD
7h 18m
1 stop
$510United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
10:25 pm - 10:45 am
IAD
-
SUX
13h 20m
1 stop
United Airlines Logo
1:00 pm - 7:25 am
SUX
-
IAD
17h 25m
2 stops
$516United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
3:58 pm - 11:42 pm
IAD
-
SUX
8h 44m
1 stop
United Airlines Logo
1:00 pm - 9:18 pm
SUX
-
IAD
7h 18m
1 stop
$520United Airlines
Mon, Feb 23 - Mon, Mar 2
United Airlines Logo
10:25 pm - 10:45 am
IAD
-
SUX
13h 20m
1 stop
United Airlines Logo
12:53 pm - 7:20 am
SUX
-
IAD
17h 27m
2 stops
$541United Airlines
Fri, Feb 27 - Fri, Mar 6
United Airlines Logo
5:27 pm - 5:41 pm
IAD
-
SUX
25h 14m
2 stops
United Airlines Logo
1:00 pm - 7:25 am
SUX
-
IAD
17h 25m
2 stops
$546United Airlines
Sat, Feb 28 - Wed, Mar 4

United Airlines flights from Washington, D.C. Dulles Intl Airport to Sioux City

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Sioux City flight tickets
United Airlines
Feb 28
IAD10:30 pmWashington, D.C. Dulles Intl
20h 11m
1 stop
SUX5:41 pmSioux City Sioux Gateway
Mar 4
SUX1:00 pmSioux City Sioux Gateway
7h 18m
1 stop
IAD9:18 pmWashington, D.C. Dulles Intl
$390
United Airlines
Feb 28
IAD8:15 amWashington, D.C. Dulles Intl
10h 26m
1 stop
SUX5:41 pmSioux City Sioux Gateway
Mar 4
SUX1:00 pmSioux City Sioux Gateway
7h 18m
1 stop
IAD9:18 pmWashington, D.C. Dulles Intl
$431
United Airlines
Feb 28
IAD10:25 pmWashington, D.C. Dulles Intl
13h 20m
1 stop
SUX10:45 amSioux City Sioux Gateway
Mar 4
SUX1:00 pmSioux City Sioux Gateway
7h 18m
1 stop
IAD9:18 pmWashington, D.C. Dulles Intl
$442

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Sioux City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 4, 2026.
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

Sat 2/28

10:30 pm-5:41 pm

1 stop20h 11m

Sioux City Sioux Gateway

Wed 3/4

1:00 pm-9:18 pm

1 stop7h 18m

$390

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sat 2/28

8:15 am-5:41 pm

1 stop10h 26m

Sioux City Sioux Gateway

Wed 3/4

1:00 pm-9:18 pm

1 stop7h 18m

$431

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sat 2/28

10:25 pm-10:45 am

1 stop13h 20m

Sioux City Sioux Gateway

Wed 3/4

1:00 pm-9:18 pm

1 stop7h 18m

$442

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sat 2/28

10:30 pm-5:41 pm

1 stop20h 11m

Sioux City Sioux Gateway

Wed 3/4

1:00 pm-7:25 am

2 stops17h 25m

$464

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sat 2/28

8:15 am-11:42 pm

2 stops16h 27m

Sioux City Sioux Gateway

Wed 3/4

1:00 pm-9:18 pm

1 stop7h 18m

$499

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sat 2/28

8:20 am-11:42 pm

2 stops16h 22m

Sioux City Sioux Gateway

Wed 3/4

1:00 pm-9:18 pm

1 stop7h 18m

$510

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sat 2/28

10:25 pm-10:45 am

1 stop13h 20m

Sioux City Sioux Gateway

Wed 3/4

1:00 pm-7:25 am

2 stops17h 25m

$516

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Mon 2/23

3:58 pm-11:42 pm

1 stop8h 44m

Sioux City Sioux Gateway

Mon 3/2

1:00 pm-9:18 pm

1 stop7h 18m

$520

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Fri 2/27

10:25 pm-10:45 am

1 stop13h 20m

Sioux City Sioux Gateway

Fri 3/6

12:53 pm-7:20 am

2 stops17h 27m

$541

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sat 2/28

5:27 pm-5:41 pm

2 stops25h 14m

Sioux City Sioux Gateway

Wed 3/4

1:00 pm-7:25 am

2 stops17h 25m

$546

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

See travel insights to Sioux City from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Sioux City

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Sioux City Sioux Gateway?

United Airlines is the most popular carrier operating from Washington, D.C. Dulles Intl to Sioux City Sioux Gateway

What airlines fly to Sioux City?

Delta, United Airlines and American Airlines are the top three most popular airlines that fly to Sioux City from Washington, D.C. Dulles Intl Airport according to our data. Delta is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Sioux City. Keep in mind that there are 3 different airlines that fly to Sioux City on a routine basis, so you have a few additional options to choose from.

When to book flights from Washington, D.C. Dulles Intl Airport to Sioux City

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Sioux City according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Sioux City (IAD to SUX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Sioux City

Fastest flight time

10h 17m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Sioux City takes 10h 17m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Sioux City. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Sioux City.
Search flight deals

  • How far is Washington, D.C. Dulles Intl to Sioux City Sioux Gateway by plane?

    Sioux City Sioux Gateway is 1019.1 mi away from Washington, D.C. Dulles Intl. Typically, this will take 10h 17m by plane in normal conditions.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Sioux City Sioux Gateway Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Sioux City Sioux Gateway Airport are updated daily.

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Sioux City Sioux Gateway Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Sioux City Sioux Gateway Airport.

  • What documentation or ID do you need to fly to Sioux City Sioux Gateway Airport?

    The required travel and health documents for your Sioux City Sioux Gateway Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sioux City Sioux Gateway Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Sioux City?

Book flights to Sioux City if you plan to visit one of these locations
Norfolk

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Sioux City?

It is quick and easy to find Washington, D.C. to Sioux City flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sioux City that suits you.

Can I find flights from Washington, D.C. to Sioux City with flexible booking policies on momondo?

momondo does allow users to show only those flights to Sioux City from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington, D.C. to Sioux City?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sioux City from Washington, D.C..

I’m not ready to book a flight from Washington, D.C. to Sioux City right now. Can momondo alert me if prices change?

Price alerts on flights to Sioux City from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Sioux City trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 3/6
Fri 3/13
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States