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Cheap flights from Sioux City to Washington, D.C. from $342

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 11/27. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:50 am - 2:13 pmSUX-DCA
5h 23m1 stop
United Airlines Logo
7:00 pm - 11:15 pmDCA-SUX
5h 15m1 stop
$357United Airlines
Find Deal
Thu, Dec 11 - Sat, Dec 27
United Airlines Logo
12:45 pm - 8:59 pmSUX-DCA
7h 14m1 stop
United Airlines Logo
12:00 pm - 5:32 pmDCA-SUX
6h 32m1 stop
$464United Airlines
Find Deal
Fri, Mar 6 - Tue, Mar 10
United Airlines Logo
6:31 pm - 9:19 amSUX-DCA
13h 48m2 stops
United Airlines Logo
12:00 pm - 5:32 pmDCA-SUX
6h 32m1 stop
$598United Airlines
Find Deal
Fri, Mar 6 - Tue, Mar 10
United Airlines Logo
12:45 pm - 8:59 pmSUX-DCA
7h 14m1 stop
United Airlines Logo
6:30 am - 11:34 pmDCA-SUX
18h 04m3 stops
$618United Airlines
Find Deal
Fri, Mar 6 - Tue, Mar 10
United Airlines Logo
7:50 am - 2:13 pmSUX-DCA
5h 23m1 stop
United Airlines Logo
4:26 pm - 11:15 pmDCA-SUX
31h 49m2 stops
$646United Airlines
Find Deal
Thu, Dec 11 - Sat, Dec 27

United Airlines flights from Sioux City to Washington, D.C. Reagan-National Airport

Our best United Airlines deals on Sioux City to Washington, D.C. Reagan-National Airport flight tickets
United Airlines
Dec 11
SUX7:50 amSioux City Sioux Gateway
5h 23m
1 stop
DCA2:13 pmWashington, D.C. Reagan-National
Dec 27
DCA7:00 pmWashington, D.C. Reagan-National
5h 15m
1 stop
SUX11:15 pmSioux City Sioux Gateway
$357
Find similar
United Airlines
Mar 6
SUX12:45 pmSioux City Sioux Gateway
7h 14m
1 stop
DCA8:59 pmWashington, D.C. Reagan-National
Mar 10
DCA12:00 pmWashington, D.C. Reagan-National
6h 32m
1 stop
SUX5:32 pmSioux City Sioux Gateway
$464
Find similar
United Airlines
Mar 6
SUX6:31 pmSioux City Sioux Gateway
13h 48m
2 stops
DCA9:19 amWashington, D.C. Reagan-National
Mar 10
DCA12:00 pmWashington, D.C. Reagan-National
6h 32m
1 stop
SUX5:32 pmSioux City Sioux Gateway
$598
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Sioux City to Washington, D.C. Reagan-National 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 November 3, 2025.
Use the filters below to find and compare flights from Sioux City to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Thu 12/11

7:50 am-2:13 pm

1 stop5h 23m

Washington, D.C. Reagan-National

Sat 12/27

7:00 pm-11:15 pm

1 stop5h 15m

$357

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Fri 3/6

12:45 pm-8:59 pm

1 stop7h 14m

Washington, D.C. Reagan-National

Tue 3/10

12:00 pm-5:32 pm

1 stop6h 32m

$464

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Fri 3/6

6:31 pm-9:19 am

2 stops13h 48m

Washington, D.C. Reagan-National

Tue 3/10

12:00 pm-5:32 pm

1 stop6h 32m

$598

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Fri 3/6

12:45 pm-8:59 pm

1 stop7h 14m

Washington, D.C. Reagan-National

Tue 3/10

6:30 am-11:34 pm

3 stops18h 04m

$618

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Thu 12/11

7:50 am-2:13 pm

1 stop5h 23m

Washington, D.C. Reagan-National

Sat 12/27

4:26 pm-11:15 pm

2 stops31h 49m

$646

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Thu 11/27

7:45 am-2:10 pm

1 stop5h 25m

$342

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Sioux City to Washington, D.C. Reagan-National Airport

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. Reagan-National Airport?

The cheapest day to depart from Sioux City to Washington, D.C. Reagan-National Airport is on a Wednesday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Wednesday will often find tickets for as low as $446. Flights from Sioux City to Washington, D.C. Reagan-National Airport on a Saturday will generally be more expensive and average around $471. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

When to book flights from Sioux City to Washington, D.C. Reagan-National Airport

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

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

Direct flights

None
There are no direct flights from Sioux City to Washington, D.C. Reagan-National Airport. There are no popular flight routes from Sioux City to Washington, D.C. Reagan-National Airport.
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  • How far is Sioux City Sioux Gateway to Washington, D.C. Reagan-National by plane?

    The straight-line distance from Sioux City Sioux Gateway to Washington, D.C. Reagan-National is 1042.2 mi. 5h 23m 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. Reagan-National Airport?

    Prices for flights from Sioux City Sioux Gateway Airport to Washington, D.C. Reagan-National Airport are refreshed on a daily basis.

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

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

    The travel and health documents you'll need for your trip to Washington, D.C. Reagan-National Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. It is always advisable to seek 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
Manassas
Reston
Gaithersburg
Fairfax
Glen Burnie
Springfield
Linthicum Heights

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?

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

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

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 Washington, D.C. from Sioux City.

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

Yes momondo offers price alerts on flights to Washington, D.C. from Sioux City. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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