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Cheap flights from Sioux City to Washington, D.C. from $378

This is the cheapest one-way 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 8/13. 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
1 adult, Economy, 0 bags

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
8:10 am - 2:23 pm
SUX
-
DCA
5h 13m
1 stop
United Airlines Logo
1:04 pm - 5:53 pm
DCA
-
SUX
5h 49m
1 stop
$384United Airlines
Thu, Aug 13 - Mon, Aug 17
United Airlines Logo
9:03 am - 5:13 pm
SUX
-
BWI
7h 10m
1 stop
United Airlines Logo
1:10 pm - 5:54 pm
BWI
-
SUX
5h 44m
1 stop
$404United Airlines
Wed, Dec 2 - Sat, Dec 5
United Airlines Logo
9:03 am - 4:52 pm
SUX
-
DCA
6h 49m
1 stop
United Airlines Logo
11:30 am - 5:54 pm
DCA
-
SUX
7h 24m
1 stop
$404United Airlines
Wed, Dec 2 - Sat, Dec 5
United Airlines Logo
9:03 am - 5:13 pm
SUX
-
BWI
7h 10m
1 stop
United Airlines Logo
1:10 pm - 5:54 pm
BWI
-
SUX
5h 44m
1 stop
$414United Airlines
Wed, Dec 2 - Sat, Dec 5
United Airlines Logo
8:20 am - 2:12 pm
SUX
-
DCA
4h 52m
1 stop
United Airlines Logo
2:05 pm - 6:10 pm
DCA
-
SUX
5h 05m
1 stop
$424United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
9:03 am - 4:01 pm
SUX
-
IAD
5h 58m
1 stop
United Airlines Logo
1:05 pm - 5:54 pm
IAD
-
SUX
5h 49m
1 stop
$454United Airlines
Wed, Dec 2 - Sat, Dec 5
United Airlines Logo
9:03 am - 5:13 pm
SUX
-
BWI
7h 10m
1 stop
United Airlines Logo
8:15 am - 6:11 pm
BWI
-
SUX
10h 56m
2 stops
$454United Airlines
Wed, Dec 2 - Sat, Dec 5
United Airlines Logo
9:03 am - 5:13 pm
SUX
-
BWI
7h 10m
1 stop
United Airlines Logo
8:15 am - 6:11 pm
BWI
-
SUX
10h 56m
2 stops
$459United Airlines
Wed, Dec 2 - Sat, Dec 5
United Airlines Logo
8:10 am - 1:58 pm
SUX
-
BWI
4h 48m
1 stop
United Airlines Logo
4:18 pm - 11:43 pm
BWI
-
SUX
8h 25m
1 stop
$471United Airlines
Fri, Aug 28 - Mon, Aug 31
United Airlines Logo
9:03 am - 4:01 pm
SUX
-
IAD
5h 58m
1 stop
United Airlines Logo
1:05 pm - 5:54 pm
IAD
-
SUX
5h 49m
1 stop
$485United Airlines
Wed, Dec 2 - Sat, Dec 5

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

Our best United Airlines deals on Sioux City to Washington, D.C. flight tickets
United Airlines
Aug 13
SUX8:10 amSioux City Sioux Gateway
5h 13m
1 stop
DCA2:23 pmWashington, D.C. Reagan-National
Aug 17
DCA1:04 pmWashington, D.C. Reagan-National
5h 49m
1 stop
SUX5:53 pmSioux City Sioux Gateway
$384
United Airlines
Dec 2
SUX9:03 amSioux City Sioux Gateway
7h 10m
1 stop
BWI5:13 pmBaltimore/Washington
Dec 5
BWI1:10 pmBaltimore/Washington
5h 44m
1 stop
SUX5:54 pmSioux City Sioux Gateway
$404
United Airlines
Dec 2
SUX9:03 amSioux City Sioux Gateway
7h 10m
1 stop
BWI5:13 pmBaltimore/Washington
Dec 5
BWI1:10 pmBaltimore/Washington
5h 44m
1 stop
SUX5:54 pmSioux City Sioux Gateway
$414

momondo Fare Finder

 
Customize your flight search to find flights from Sioux City to Washington, D.C. 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 July 31, 2026.
Use the filters below to find and compare flights from Sioux City to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Thu 8/13

8:10 am-2:23 pm

1 stop5h 13m

Washington, D.C. Reagan-National

Mon 8/17

1:04 pm-5:53 pm

1 stop5h 49m

$384

Sioux CityBaltimore

SUX - BWI

SUXBWI

Sioux City Sioux Gateway

Wed 12/2

9:03 am-5:13 pm

1 stop7h 10m

Baltimore/Washington

Sat 12/5

1:10 pm-5:54 pm

1 stop5h 44m

$404

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Wed 12/2

9:03 am-4:52 pm

1 stop6h 49m

Washington, D.C. Reagan-National

Sat 12/5

11:30 am-5:54 pm

1 stop7h 24m

$404

Sioux CityBaltimore

SUX - BWI

SUXBWI

Sioux City Sioux Gateway

Wed 12/2

9:03 am-5:13 pm

1 stop7h 10m

Baltimore/Washington

Sat 12/5

1:10 pm-5:54 pm

1 stop5h 44m

$414
Quickest round-trip

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Sat 11/14

8:20 am-2:12 pm

1 stop4h 52m

Washington, D.C. Reagan-National

Wed 11/18

2:05 pm-6:10 pm

1 stop5h 05m

$424

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Wed 12/2

9:03 am-4:01 pm

1 stop5h 58m

Washington, D.C. Dulles Intl

Sat 12/5

1:05 pm-5:54 pm

1 stop5h 49m

$454

Sioux CityBaltimore

SUX - BWI

SUXBWI

Sioux City Sioux Gateway

Wed 12/2

9:03 am-5:13 pm

1 stop7h 10m

Baltimore/Washington

Sat 12/5

8:15 am-6:11 pm

2 stops10h 56m

$454

Sioux CityBaltimore

SUX - BWI

SUXBWI

Sioux City Sioux Gateway

Wed 12/2

9:03 am-5:13 pm

1 stop7h 10m

Baltimore/Washington

Sat 12/5

8:15 am-6:11 pm

2 stops10h 56m

$459

Sioux CityBaltimore

SUX - BWI

SUXBWI

Sioux City Sioux Gateway

Fri 8/28

8:10 am-1:58 pm

1 stop4h 48m

Baltimore/Washington

Mon 8/31

4:18 pm-11:43 pm

1 stop8h 25m

$471

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Wed 12/2

9:03 am-4:01 pm

1 stop5h 58m

Washington, D.C. Dulles Intl

Sat 12/5

1:05 pm-5:54 pm

1 stop5h 49m

$485

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

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

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 Sioux City Sioux Gateway to Washington, D.C.?

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

What airlines fly to Washington, D.C.?

Delta, Southwest and United Airlines are the top three most popular airlines that fly to Washington, D.C. from Sioux City according to our data. Delta is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Sioux City to Washington, D.C. 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. (SUX to WAS) flight deals and tips

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

Fastest flight time

4h 48m

Direct flights

None
The fastest flight from Sioux City to Washington, D.C. takes 4h 48m
There are no direct flights from Sioux City to Washington, D.C.. There are no popular flight routes from Sioux City to Washington, D.C..
Search flight deals

Frequently asked questions about flying from Sioux City to Washington, D.C.

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

    A flight from Sioux City Sioux Gateway to Washington, D.C. will travel around 1041.1 mi. 4h 48m is a normal flight duration for this route.

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

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

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

    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 Sioux City Sioux Gateway Airport to Washington, D.C..

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

    The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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
Arlington
Gettysburg
Waldorf
Laurel
Woodbridge
Fredericksburg
Gaithersburg
Linthicum Heights
Rockville
Silver Spring
Towson
Colonial Beach
Springfield
Fairfax
Tysons
Bethesda
Edgewood
College Park

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Sioux City.

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

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Sioux City with this policy.

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

momondo helps you find the best flight between Sioux City and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Washington, D.C. from Sioux City 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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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport