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Cheap flights from Sioux City to Washington, D.C. from $243

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 8/11. 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
8:35 am - 1:59 pm
SUX
-
DCA
4h 24m
1 stop
United Airlines Logo
11:30 am - 6:23 pm
DCA
-
SUX
7h 53m
1 stop
$651United Airlines
Sun, Sep 27 - Thu, Oct 1
United Airlines Logo
8:10 am - 2:22 pm
SUX
-
DCA
5h 12m
1 stop
United Airlines Logo
7:10 pm - 5:53 pm
DCA
-
SUX
23h 43m
1 stop
$750United Airlines
Thu, Jul 9 - Thu, Jul 9
United Airlines Logo
8:35 am - 1:59 pm
SUX
-
DCA
4h 24m
1 stop
United Airlines Logo
11:30 am - 6:23 pm
DCA
-
SUX
7h 53m
1 stop
$764United Airlines
Sun, Sep 27 - Fri, Oct 2
United Airlines Logo
8:35 am - 4:52 pm
SUX
-
DCA
7h 17m
1 stop
United Airlines Logo
11:30 am - 6:23 pm
DCA
-
SUX
7h 53m
1 stop
$810United Airlines
Mon, Sep 28 - Thu, Oct 1
United Airlines Logo
11:30 am - 3:06 pm
SUX
-
DCA
26h 36m
1 stop
United Airlines Logo
4:20 pm - 10:55 am
DCA
-
SUX
19h 35m
1 stop
$830United Airlines
Tue, Sep 1 - Sat, Sep 5
United Airlines Logo
8:35 am - 1:59 pm
SUX
-
DCA
4h 24m
1 stop
United Airlines Logo
6:00 am - 6:23 pm
DCA
-
SUX
13h 23m
2 stops
$841United Airlines
Sun, Sep 27 - Thu, Oct 1
United Airlines Logo
8:10 am - 3:52 pm
SUX
-
DCA
6h 42m
1 stop
United Airlines Logo
8:25 pm - 5:53 pm
DCA
-
SUX
22h 28m
2 stops
$845United Airlines
Thu, Jul 9 - Thu, Jul 9
United Airlines Logo
11:30 am - 9:59 am
SUX
-
DCA
21h 29m
2 stops
United Airlines Logo
4:20 pm - 10:55 am
DCA
-
SUX
19h 35m
1 stop
$867United Airlines
Tue, Sep 1 - Sat, Sep 5
United Airlines Logo
8:35 am - 4:52 pm
SUX
-
DCA
7h 17m
1 stop
United Airlines Logo
11:30 am - 6:23 pm
DCA
-
SUX
7h 53m
1 stop
$923United Airlines
Mon, Sep 28 - Fri, Oct 2
United Airlines Logo
11:30 am - 11:01 am
SUX
-
DCA
22h 31m
2 stops
United Airlines Logo
1:04 pm - 10:55 am
DCA
-
SUX
22h 51m
2 stops
$930United Airlines
Tue, Sep 1 - Sat, Sep 5

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
Sep 27
SUX8:35 amSioux City Sioux Gateway
4h 24m
1 stop
DCA1:59 pmWashington, D.C. Reagan-National
Oct 1
DCA11:30 amWashington, D.C. Reagan-National
7h 53m
1 stop
SUX6:23 pmSioux City Sioux Gateway
$651
United Airlines
Jul 9
SUX8:10 amSioux City Sioux Gateway
5h 12m
1 stop
DCA2:22 pmWashington, D.C. Reagan-National
Jul 9
DCA7:10 pmWashington, D.C. Reagan-National
23h 43m
1 stop
SUX5:53 pmSioux City Sioux Gateway
$750
United Airlines
Sep 27
SUX8:35 amSioux City Sioux Gateway
4h 24m
1 stop
DCA1:59 pmWashington, D.C. Reagan-National
Oct 2
DCA11:30 amWashington, D.C. Reagan-National
7h 53m
1 stop
SUX6:23 pmSioux City Sioux Gateway
$764

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 May 25, 2026.
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

Cheapest round-trip
Quickest round-trip

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Sun 9/27

8:35 am-1:59 pm

1 stop4h 24m

Washington, D.C. Reagan-National

Thu 10/1

11:30 am-6:23 pm

1 stop7h 53m

$651

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Thu 7/9

8:10 am-2:22 pm

1 stop5h 12m

Washington, D.C. Reagan-National

Thu 7/9

7:10 pm-5:53 pm

1 stop23h 43m

$750

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Sun 9/27

8:35 am-1:59 pm

1 stop4h 24m

Washington, D.C. Reagan-National

Fri 10/2

11:30 am-6:23 pm

1 stop7h 53m

$764

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Mon 9/28

8:35 am-4:52 pm

1 stop7h 17m

Washington, D.C. Reagan-National

Thu 10/1

11:30 am-6:23 pm

1 stop7h 53m

$810

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Tue 9/1

11:30 am-3:06 pm

1 stop26h 36m

Washington, D.C. Reagan-National

Sat 9/5

4:20 pm-10:55 am

1 stop19h 35m

$830

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Sun 9/27

8:35 am-1:59 pm

1 stop4h 24m

Washington, D.C. Reagan-National

Thu 10/1

6:00 am-6:23 pm

2 stops13h 23m

$841

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Thu 7/9

8:10 am-3:52 pm

1 stop6h 42m

Washington, D.C. Reagan-National

Thu 7/9

8:25 pm-5:53 pm

2 stops22h 28m

$845

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Tue 9/1

11:30 am-9:59 am

2 stops21h 29m

Washington, D.C. Reagan-National

Sat 9/5

4:20 pm-10:55 am

1 stop19h 35m

$867

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Mon 9/28

8:35 am-4:52 pm

1 stop7h 17m

Washington, D.C. Reagan-National

Fri 10/2

11:30 am-6:23 pm

1 stop7h 53m

$923

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Tue 9/1

11:30 am-11:01 am

2 stops22h 31m

Washington, D.C. Reagan-National

Sat 9/5

1:04 pm-10:55 am

2 stops22h 51m

$930

Flights are sorted by cheapest round-trip flights 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. 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 airline that flies from Sioux City Sioux Gateway to Washington, D.C. Reagan-National?

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

What airlines fly to Washington, D.C. Reagan-National Airport?

Delta, Southwest and United Airlines are the top three most popular airlines that fly to Washington, D.C. Reagan-National Airport from Sioux City according to our data. Delta is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Washington, D.C. Reagan-National Airport. Keep in mind that there are 5 different airlines that fly to Washington, D.C. Reagan-National Airport 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. 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

Fastest flight time

4h 24m

Direct flights

None
The fastest flight from Sioux City to Washington, D.C. Reagan-National Airport takes 4h 24m
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.
Search flight deals

Frequently asked questions about flying from Sioux City to Washington, D.C. Reagan-National Airport

  • 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. 4h 24m 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
Waldorf
Woodbridge
Laurel
Gaithersburg
Colonial Beach
Fredericksburg
Silver Spring
Rockville
Towson
Manassas
Linthicum Heights
Tysons
Springfield
Bethesda
Fairfax
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?

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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