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Cheap flights from Sioux City to Washington, D.C. from $442

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Sioux City to Washington, D.C. departing on 5/2. 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 Sioux City to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:55 pm - 9:18 pm
SUX
-
IAD
7h 23m
1 stop
United Airlines Logo
8:12 pm - 10:41 am
IAD
-
SUX
15h 29m
1 stop
$442United Airlines
Σαβ, Μαϊ 2 - Κυρ, Μαϊ 10
United Airlines Logo
12:53 pm - 8:37 pm
SUX
-
IAD
6h 44m
1 stop
United Airlines Logo
5:10 pm - 11:41 pm
IAD
-
SUX
7h 31m
1 stop
$449United Airlines
Τρι, Μαρ 10 - Σαβ, Μαρ 14
United Airlines Logo
12:55 pm - 9:18 pm
SUX
-
IAD
7h 23m
1 stop
United Airlines Logo
8:15 am - 6:06 pm
IAD
-
SUX
10h 51m
2 stops
$453United Airlines
Σαβ, Μαϊ 2 - Κυρ, Μαϊ 10
United Airlines Logo
12:53 pm - 6:29 am
SUX
-
IAD
16h 36m
2 stops
United Airlines Logo
1:15 pm - 5:41 pm
IAD
-
SUX
5h 26m
1 stop
$477United Airlines
Σαβ, Μαρ 7 - Τετ, Μαρ 11
United Airlines Logo
12:53 pm - 11:59 pm
SUX
-
IAD
10h 06m
1 stop
United Airlines Logo
1:15 pm - 5:41 pm
IAD
-
SUX
5h 26m
1 stop
$480United Airlines
Σαβ, Μαρ 7 - Τετ, Μαρ 11
United Airlines Logo
12:53 pm - 11:59 pm
SUX
-
IAD
10h 06m
1 stop
United Airlines Logo
1:15 pm - 5:41 pm
IAD
-
SUX
5h 26m
1 stop
$500United Airlines
Σαβ, Μαρ 7 - Τετ, Μαρ 11
United Airlines Logo
12:53 pm - 8:37 pm
SUX
-
IAD
6h 44m
1 stop
United Airlines Logo
8:20 am - 5:41 pm
IAD
-
SUX
10h 21m
2 stops
$518United Airlines
Τρι, Μαρ 10 - Σαβ, Μαρ 14
United Airlines Logo
12:53 pm - 6:29 am
SUX
-
IAD
16h 36m
2 stops
United Airlines Logo
1:15 pm - 5:41 pm
IAD
-
SUX
5h 26m
1 stop
$522United Airlines
Σαβ, Μαρ 7 - Τετ, Μαρ 11
United Airlines Logo
12:53 pm - 6:29 am
SUX
-
IAD
16h 36m
2 stops
United Airlines Logo
8:20 am - 5:41 pm
IAD
-
SUX
10h 21m
2 stops
$586United Airlines
Σαβ, Μαρ 7 - Τετ, Μαρ 11
United Airlines Logo
12:53 pm - 6:29 am
SUX
-
IAD
16h 36m
2 stops
United Airlines Logo
1:15 pm - 5:41 pm
IAD
-
SUX
5h 26m
1 stop
$587United Airlines
Σαβ, Μαρ 7 - Τετ, Μαρ 11

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

Our best United Airlines deals on Sioux City to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
May 2
SUX12:55 pmSioux City Sioux Gateway
7h 23m
1 stop
IAD9:18 pmWashington, D.C. Dulles Intl
May 10
IAD8:12 pmWashington, D.C. Dulles Intl
15h 29m
1 stop
SUX10:41 amSioux City Sioux Gateway
$442
United Airlines
Mar 10
SUX12:53 pmSioux City Sioux Gateway
6h 44m
1 stop
IAD8:37 pmWashington, D.C. Dulles Intl
Mar 14
IAD5:10 pmWashington, D.C. Dulles Intl
7h 31m
1 stop
SUX11:41 pmSioux City Sioux Gateway
$449
United Airlines
May 2
SUX12:55 pmSioux City Sioux Gateway
7h 23m
1 stop
IAD9:18 pmWashington, D.C. Dulles Intl
May 10
IAD8:15 amWashington, D.C. Dulles Intl
10h 51m
2 stops
SUX6:06 pmSioux City Sioux Gateway
$453

momondo Fare Finder

 
Customize your flight search to find flights from Sioux City to Washington, D.C. Dulles Intl Airport 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 Φεβρουάριος 24, 2026.
Use the filters below to find and compare flights from Sioux City to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Σαβ 5/2

12:55 pm-9:18 pm

1 stop7h 23m

Washington, D.C. Dulles Intl

Κυρ 5/10

8:12 pm-10:41 am

1 stop15h 29m

$442

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Τρι 3/10

12:53 pm-8:37 pm

1 stop6h 44m

Washington, D.C. Dulles Intl

Σαβ 3/14

5:10 pm-11:41 pm

1 stop7h 31m

$449

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Σαβ 5/2

12:55 pm-9:18 pm

1 stop7h 23m

Washington, D.C. Dulles Intl

Κυρ 5/10

8:15 am-6:06 pm

2 stops10h 51m

$453

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Σαβ 3/7

12:53 pm-6:29 am

2 stops16h 36m

Washington, D.C. Dulles Intl

Τετ 3/11

1:15 pm-5:41 pm

1 stop5h 26m

$477

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Σαβ 3/7

12:53 pm-11:59 pm

1 stop10h 06m

Washington, D.C. Dulles Intl

Τετ 3/11

1:15 pm-5:41 pm

1 stop5h 26m

$480

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Σαβ 3/7

12:53 pm-11:59 pm

1 stop10h 06m

Washington, D.C. Dulles Intl

Τετ 3/11

1:15 pm-5:41 pm

1 stop5h 26m

$500

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Τρι 3/10

12:53 pm-8:37 pm

1 stop6h 44m

Washington, D.C. Dulles Intl

Σαβ 3/14

8:20 am-5:41 pm

2 stops10h 21m

$518

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Σαβ 3/7

12:53 pm-6:29 am

2 stops16h 36m

Washington, D.C. Dulles Intl

Τετ 3/11

1:15 pm-5:41 pm

1 stop5h 26m

$522

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Σαβ 3/7

12:53 pm-6:29 am

2 stops16h 36m

Washington, D.C. Dulles Intl

Τετ 3/11

8:20 am-5:41 pm

2 stops10h 21m

$586

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Σαβ 3/7

12:53 pm-6:29 am

2 stops16h 36m

Washington, D.C. Dulles Intl

Τετ 3/11

1:15 pm-5:41 pm

1 stop5h 26m

$587

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

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

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

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

Fastest flight time

6h 44m

Direct flights

None
The fastest flight from Sioux City to Washington, D.C. Dulles Intl Airport takes 6h 44m
There are no direct flights from Sioux City to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Sioux City to Washington, D.C. Dulles Intl Airport.
Search flight deals

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

    Sioux City Sioux Gateway and Washington, D.C. Dulles Intl are 1019.1 mi apart from one another. Typically, this will take 6h 44m by plane in normal conditions.

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

    Prices for flights from Sioux City Sioux Gateway Airport to Washington, D.C. Dulles Intl Airport were last updated today.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sioux City Sioux Gateway Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The required travel and health documents for your Washington, D.C. Dulles Intl 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 Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • How do I get Price Alerts for flights from Sioux City to Washington, D.C. Dulles Intl Airport?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Sioux City from Washington, D.C. Dulles Intl Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Sioux City to Washington, D.C. Dulles Intl Airport with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Waldorf
Woodbridge
Colonial Beach
Laurel
Towson
Silver Spring
Gaithersburg
Tysons
Fredericksburg
Rockville
Manassas
Springfield
Fairfax
Bethesda
Sterling

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Sioux City to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Sioux City to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Sioux City to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from Sioux City and alert you when they change.

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

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1 adult
Πεμ 3/26
Πεμ 4/2
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