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Cheap flights from Washington, D.C. Dulles Intl Airport to Sioux City from $517

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 1/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
8:20 am - 11:47 pm
IAD
-
SUX
16h 27m2 stops
United Airlines Logo
12:45 pm - 7:30 am
SUX
-
IAD
17h 45m2 stops
$517United Airlines
Sun, Jan 18 - Thu, Feb 5
United Airlines Logo
8:20 am - 11:47 pm
IAD
-
SUX
16h 27m2 stops
United Airlines Logo
6:43 pm - 5:21 am
SUX
-
IAD
9h 38m1 stop
$531United Airlines
Sun, Jan 18 - Thu, Feb 5
United Airlines Logo
8:20 am - 5:56 pm
IAD
-
SUX
10h 36m2 stops
United Airlines Logo
6:00 am - 7:35 am
SUX
-
IAD
24h 35m2 stops
$537United Airlines
Tue, Apr 28 - Sat, May 2
United Airlines Logo
10:32 pm - 10:55 am
IAD
-
SUX
13h 23m1 stop
United Airlines Logo
6:43 pm - 1:17 pm
SUX
-
IAD
17h 34m1 stop
$540United Airlines
Mon, Jan 19 - Thu, Feb 5
United Airlines Logo
10:30 pm - 5:56 pm
IAD
-
SUX
20h 26m1 stop
United Airlines Logo
6:00 am - 7:35 am
SUX
-
IAD
24h 35m2 stops
$547United Airlines
Tue, Apr 28 - Sat, May 2
United Airlines Logo
10:20 pm - 5:28 pm
IAD
-
SUX
20h 08m2 stops
United Airlines Logo
6:00 am - 5:21 am
SUX
-
IAD
22h 21m1 stop
$551United Airlines
Fri, Jan 9 - Sun, Jan 11
United Airlines Logo
10:20 pm - 5:28 pm
IAD
-
SUX
20h 08m2 stops
United Airlines Logo
12:45 pm - 11:55 am
SUX
-
IAD
22h 10m2 stops
$558United Airlines
Fri, Jan 9 - Sun, Jan 11
United Airlines Logo
10:32 pm - 10:55 am
IAD
-
SUX
13h 23m1 stop
United Airlines Logo
6:43 pm - 5:21 am
SUX
-
IAD
9h 38m1 stop
$580United Airlines
Fri, Jan 9 - Sun, Jan 11
United Airlines Logo
10:30 pm - 5:56 pm
IAD
-
SUX
20h 26m1 stop
United Airlines Logo
12:45 pm - 11:43 am
SUX
-
IAD
21h 58m1 stop
$602United Airlines
Tue, Apr 28 - Sat, May 2

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
Jan 6
IAD1:05 pmWashington, D.C. Dulles Intl
5h 23m
1 stop
SUX5:28 pmSioux City Sioux Gateway
Jan 10
SUX12:45 pmSioux City Sioux Gateway
7h 32m
1 stop
IAD9:17 pmWashington, D.C. Dulles Intl
$294
Find similar
United Airlines
Jan 6
IAD8:20 amWashington, D.C. Dulles Intl
16h 27m
2 stops
SUX11:47 pmSioux City Sioux Gateway
Jan 10
SUX12:45 pmSioux City Sioux Gateway
7h 32m
1 stop
IAD9:17 pmWashington, D.C. Dulles Intl
$472
Find similar
United Airlines
Jan 18
IAD1:05 pmWashington, D.C. Dulles Intl
5h 23m
1 stop
SUX5:28 pmSioux City Sioux Gateway
Jan 22
SUX12:45 pmSioux City Sioux Gateway
7h 32m
1 stop
IAD9:17 pmWashington, D.C. Dulles Intl
$473
Find similar

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 December 23, 2025.
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

Sun 1/18

8:20 am-11:47 pm

2 stops16h 27m

Sioux City Sioux Gateway

Thu 2/5

12:45 pm-7:30 am

2 stops17h 45m

$517

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sun 1/18

8:20 am-11:47 pm

2 stops16h 27m

Sioux City Sioux Gateway

Thu 2/5

6:43 pm-5:21 am

1 stop9h 38m

$531

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Tue 4/28

8:20 am-5:56 pm

2 stops10h 36m

Sioux City Sioux Gateway

Sat 5/2

6:00 am-7:35 am

2 stops24h 35m

$537

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Mon 1/19

10:32 pm-10:55 am

1 stop13h 23m

Sioux City Sioux Gateway

Thu 2/5

6:43 pm-1:17 pm

1 stop17h 34m

$540

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Tue 4/28

10:30 pm-5:56 pm

1 stop20h 26m

Sioux City Sioux Gateway

Sat 5/2

6:00 am-7:35 am

2 stops24h 35m

$547

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Fri 1/9

10:20 pm-5:28 pm

2 stops20h 08m

Sioux City Sioux Gateway

Sun 1/11

6:00 am-5:21 am

1 stop22h 21m

$551

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Fri 1/9

10:20 pm-5:28 pm

2 stops20h 08m

Sioux City Sioux Gateway

Sun 1/11

12:45 pm-11:55 am

2 stops22h 10m

$558

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Fri 1/9

10:32 pm-10:55 am

1 stop13h 23m

Sioux City Sioux Gateway

Sun 1/11

6:43 pm-5:21 am

1 stop9h 38m

$580

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Tue 4/28

10:30 pm-5:56 pm

1 stop20h 26m

Sioux City Sioux Gateway

Sat 5/2

12:45 pm-11:43 am

1 stop21h 58m

$602

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 day to depart on your flight to Sioux City?

On average, the least expensive day to fly to Sioux City from Washington, D.C. Dulles Intl Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $354. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Washington, D.C. Dulles Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $659.

What is the cheapest time of day to depart on your flight to Sioux City?

The cheapest time of day to fly to Sioux City is in the evening when flights can be purchased for as low as $421. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $743 on average. Flights to Sioux City from Washington, D.C. Dulles Intl Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

5h 23m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Sioux City takes 5h 23m
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 5h 23m 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.

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