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Cheap flights from Sioux City to Washington, D.C. from $275

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 3/5. 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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0 bags

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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
1:00 pm - 7:12 pm
SUX
-
DCA
5h 12m1 stop
United Airlines Logo
10:30 am - 5:41 pm
DCA
-
SUX
8h 11m1 stop
$344United Airlines
Fri, Feb 20 - Tue, Feb 24
United Airlines Logo
6:00 am - 3:07 pm
SUX
-
BWI
8h 07m1 stop
United Airlines Logo
10:30 am - 5:41 pm
BWI
-
SUX
8h 11m1 stop
$344United Airlines
Fri, Feb 20 - Tue, Feb 24
United Airlines Logo
12:45 pm - 9:17 pm
SUX
-
IAD
7h 32m1 stop
United Airlines Logo
8:20 am - 11:47 pm
IAD
-
SUX
16h 27m2 stops
$433United Airlines
Sat, Feb 7 - Tue, Feb 10
United Airlines Logo
12:45 pm - 9:17 pm
SUX
-
IAD
7h 32m1 stop
United Airlines Logo
5:17 pm - 5:28 pm
IAD
-
SUX
25h 11m1 stop
$439United Airlines
Sat, Feb 7 - Tue, Feb 10
United Airlines Logo
12:45 pm - 9:17 pm
SUX
-
IAD
7h 32m1 stop
United Airlines Logo
2:24 pm - 11:47 pm
IAD
-
SUX
10h 23m1 stop
$442United Airlines
Sat, Feb 7 - Tue, Feb 10
United Airlines Logo
1:00 pm - 8:59 pm
SUX
-
DCA
6h 59m1 stop
United Airlines Logo
6:00 am - 5:41 pm
DCA
-
SUX
12h 41m2 stops
$449United Airlines
Fri, Feb 20 - Tue, Feb 24
United Airlines Logo
1:00 pm - 9:17 pm
SUX
-
BWI
7h 17m1 stop
United Airlines Logo
6:07 am - 11:42 pm
BWI
-
SUX
18h 35m2 stops
$457United Airlines
Fri, Feb 20 - Tue, Feb 24
United Airlines Logo
12:45 pm - 7:30 am
SUX
-
IAD
17h 45m2 stops
United Airlines Logo
8:20 am - 11:47 pm
IAD
-
SUX
16h 27m2 stops
$517United Airlines
Sat, Feb 7 - Tue, Feb 10
United Airlines Logo
6:00 am - 10:30 pm
SUX
-
BWI
15h 30m3 stops
United Airlines Logo
10:30 am - 5:41 pm
BWI
-
SUX
8h 11m1 stop
$590United Airlines
Fri, Feb 20 - Tue, Feb 24
United Airlines Logo
6:00 am - 10:30 pm
SUX
-
BWI
15h 30m3 stops
United Airlines Logo
4:09 pm - 11:42 pm
BWI
-
SUX
8h 33m1 stop
$616United Airlines
Fri, Feb 20 - Tue, Feb 24

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
Feb 20
SUX6:00 amSioux City Sioux Gateway
8h 07m
1 stop
BWI3:07 pmBaltimore/Washington
Feb 24
BWI10:30 amBaltimore/Washington
8h 11m
1 stop
SUX5:41 pmSioux City Sioux Gateway
$344
Find similar
United Airlines
Feb 7
SUX12:45 pmSioux City Sioux Gateway
7h 32m
1 stop
IAD9:17 pmWashington, D.C. Dulles Intl
Feb 10
IAD8:20 amWashington, D.C. Dulles Intl
16h 27m
2 stops
SUX11:47 pmSioux City Sioux Gateway
$433
Find similar
United Airlines
Feb 7
SUX12:45 pmSioux City Sioux Gateway
7h 32m
1 stop
IAD9:17 pmWashington, D.C. Dulles Intl
Feb 10
IAD5:17 pmWashington, D.C. Dulles Intl
25h 11m
1 stop
SUX5:28 pmSioux City Sioux Gateway
$439
Find similar

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 December 15, 2025.
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

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Fri 2/20

1:00 pm-7:12 pm

1 stop5h 12m

Washington, D.C. Reagan-National

Tue 2/24

10:30 am-5:41 pm

1 stop8h 11m

$344

Sioux CityBaltimore

SUX - BWI

SUXBWI

Sioux City Sioux Gateway

Fri 2/20

6:00 am-3:07 pm

1 stop8h 07m

Baltimore/Washington

Tue 2/24

10:30 am-5:41 pm

1 stop8h 11m

$344

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Sat 2/7

12:45 pm-9:17 pm

1 stop7h 32m

Washington, D.C. Dulles Intl

Tue 2/10

8:20 am-11:47 pm

2 stops16h 27m

$433

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Sat 2/7

12:45 pm-9:17 pm

1 stop7h 32m

Washington, D.C. Dulles Intl

Tue 2/10

5:17 pm-5:28 pm

1 stop25h 11m

$439

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Sat 2/7

12:45 pm-9:17 pm

1 stop7h 32m

Washington, D.C. Dulles Intl

Tue 2/10

2:24 pm-11:47 pm

1 stop10h 23m

$442

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Fri 2/20

1:00 pm-8:59 pm

1 stop6h 59m

Washington, D.C. Reagan-National

Tue 2/24

6:00 am-5:41 pm

2 stops12h 41m

$449

Sioux CityBaltimore

SUX - BWI

SUXBWI

Sioux City Sioux Gateway

Fri 2/20

1:00 pm-9:17 pm

1 stop7h 17m

Baltimore/Washington

Tue 2/24

6:07 am-11:42 pm

2 stops18h 35m

$457

Sioux CityWashington, D.C.

SUX - IAD

SUXIAD

Sioux City Sioux Gateway

Sat 2/7

12:45 pm-7:30 am

2 stops17h 45m

Washington, D.C. Dulles Intl

Tue 2/10

8:20 am-11:47 pm

2 stops16h 27m

$517

Sioux CityBaltimore

SUX - BWI

SUXBWI

Sioux City Sioux Gateway

Fri 2/20

6:00 am-10:30 pm

3 stops15h 30m

Baltimore/Washington

Tue 2/24

10:30 am-5:41 pm

1 stop8h 11m

$590

Sioux CityBaltimore

SUX - BWI

SUXBWI

Sioux City Sioux Gateway

Fri 2/20

6:00 am-10:30 pm

3 stops15h 30m

Baltimore/Washington

Tue 2/24

4:09 pm-11:42 pm

1 stop8h 33m

$616

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 day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Sioux City is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $459. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Sioux City to Washington, D.C. for around $697.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

At noon is the cheapest time of day to fly from Sioux City to Washington, D.C. when you can find flight prices for as low as $385. Flying to Washington, D.C. at noon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $486. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

5h 12m

Direct flights

None
The fastest flight from Sioux City to Washington, D.C. takes 5h 12m
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

  • 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. 5h 12m 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
Gettysburg
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Gaithersburg
Reston
Manassas
Fairfax
Glen Burnie
Linthicum Heights
Bethesda

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