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Cheap flights from Washington, D.C. to Sioux City from $375

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Sioux City departing on 4/21. 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

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Find the cheapest flights from Washington, D.C. to Sioux City

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:55 am - 5:56 pm
DCA
-
SUX
7h 01m
1 stop
United Airlines Logo
12:55 pm - 9:06 pm
SUX
-
DCA
7h 11m
1 stop
$375United Airlines
Tue, Apr 21 - Sat, Apr 25
United Airlines Logo
11:08 am - 5:56 pm
BWI
-
SUX
7h 48m
1 stop
United Airlines Logo
6:00 am - 3:11 pm
SUX
-
BWI
8h 11m
1 stop
$376United Airlines
Tue, Apr 21 - Sat, Apr 25
United Airlines Logo
11:08 am - 5:56 pm
BWI
-
SUX
7h 48m
1 stop
United Airlines Logo
6:00 am - 5:33 pm
SUX
-
BWI
10h 33m
2 stops
$382United Airlines
Tue, Apr 21 - Sat, Apr 25
United Airlines Logo
4:23 pm - 11:44 pm
BWI
-
SUX
8h 21m
1 stop
United Airlines Logo
11:32 am - 12:33 am
SUX
-
BWI
12h 01m
2 stops
$417United Airlines
Thu, May 28 - Mon, Jun 1
United Airlines Logo
1:10 pm - 6:06 pm
IAD
-
SUX
5h 56m
1 stop
United Airlines Logo
12:55 pm - 7:28 pm
SUX
-
IAD
5h 33m
1 stop
$440United Airlines
Wed, May 13 - Sat, May 16
United Airlines Logo
2:00 pm - 6:06 pm
DCA
-
SUX
5h 06m
1 stop
United Airlines Logo
7:53 am - 11:59 am
SUX
-
DCA
27h 06m
1 stop
$462United Airlines
Mon, May 11 - Tue, May 26
United Airlines Logo
1:10 pm - 6:06 pm
IAD
-
SUX
5h 56m
1 stop
United Airlines Logo
12:55 pm - 7:28 pm
SUX
-
IAD
5h 33m
1 stop
$476United Airlines
Wed, May 13 - Sat, May 16
United Airlines Logo
11:55 am - 6:06 pm
DCA
-
SUX
7h 11m
1 stop
United Airlines Logo
12:55 pm - 7:05 pm
SUX
-
DCA
5h 10m
1 stop
$507United Airlines
Sun, May 17 - Wed, May 20
United Airlines Logo
11:08 am - 5:56 pm
BWI
-
SUX
7h 48m
1 stop
United Airlines Logo
12:55 pm - 9:23 pm
SUX
-
BWI
7h 28m
1 stop
$519United Airlines
Thu, Apr 23 - Mon, Apr 27
United Airlines Logo
11:08 am - 5:56 pm
BWI
-
SUX
7h 48m
1 stop
United Airlines Logo
12:55 pm - 9:02 pm
SUX
-
BWI
7h 07m
1 stop
$528United Airlines
Tue, Apr 28 - Sat, May 2

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

Our best United Airlines deals on Washington, D.C. to Sioux City flight tickets
United Airlines
Apr 21
DCA11:55 amWashington, D.C. Reagan-National
7h 01m
1 stop
SUX5:56 pmSioux City Sioux Gateway
Apr 25
SUX12:55 pmSioux City Sioux Gateway
7h 11m
1 stop
DCA9:06 pmWashington, D.C. Reagan-National
$375
United Airlines
Apr 21
BWI11:08 amBaltimore/Washington
7h 48m
1 stop
SUX5:56 pmSioux City Sioux Gateway
Apr 25
SUX6:00 amSioux City Sioux Gateway
8h 11m
1 stop
BWI3:11 pmBaltimore/Washington
$376
United Airlines
Apr 21
BWI11:08 amBaltimore/Washington
7h 48m
1 stop
SUX5:56 pmSioux City Sioux Gateway
Apr 25
SUX6:00 amSioux City Sioux Gateway
10h 33m
2 stops
BWI5:33 pmBaltimore/Washington
$382

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Sioux City 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 April 10, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Sioux City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Tue 4/21

11:55 am-5:56 pm

1 stop7h 01m

Sioux City Sioux Gateway

Sat 4/25

12:55 pm-9:06 pm

1 stop7h 11m

$375

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Tue 4/21

11:08 am-5:56 pm

1 stop7h 48m

Sioux City Sioux Gateway

Sat 4/25

6:00 am-3:11 pm

1 stop8h 11m

$376

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Tue 4/21

11:08 am-5:56 pm

1 stop7h 48m

Sioux City Sioux Gateway

Sat 4/25

6:00 am-5:33 pm

2 stops10h 33m

$382

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Thu 5/28

4:23 pm-11:44 pm

1 stop8h 21m

Sioux City Sioux Gateway

Mon 6/1

11:32 am-12:33 am

2 stops12h 01m

$417
Quickest round-trip

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Wed 5/13

1:10 pm-6:06 pm

1 stop5h 56m

Sioux City Sioux Gateway

Sat 5/16

12:55 pm-7:28 pm

1 stop5h 33m

$440

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Mon 5/11

2:00 pm-6:06 pm

1 stop5h 06m

Sioux City Sioux Gateway

Tue 5/26

7:53 am-11:59 am

1 stop27h 06m

$462

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Wed 5/13

1:10 pm-6:06 pm

1 stop5h 56m

Sioux City Sioux Gateway

Sat 5/16

12:55 pm-7:28 pm

1 stop5h 33m

$476

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Sun 5/17

11:55 am-6:06 pm

1 stop7h 11m

Sioux City Sioux Gateway

Wed 5/20

12:55 pm-7:05 pm

1 stop5h 10m

$507

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Thu 4/23

11:08 am-5:56 pm

1 stop7h 48m

Sioux City Sioux Gateway

Mon 4/27

12:55 pm-9:23 pm

1 stop7h 28m

$519

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Tue 4/28

11:08 am-5:56 pm

1 stop7h 48m

Sioux City Sioux Gateway

Sat 5/2

12:55 pm-9:02 pm

1 stop7h 07m

$528

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 Sioux City from

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

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

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

What airlines fly to Sioux City?

Delta, Southwest and United Airlines are the top three most popular airlines that fly to Sioux City from Washington, D.C. according to our data. Delta is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Sioux City. Keep in mind that there are 4 different airlines that fly to Sioux City on a routine basis, so you have a few additional options to choose from.

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

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

Cheap Washington, D.C. to Sioux City (WAS to SUX) flight deals and tips

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

Fastest flight time

4h 54m

Direct flights

None
The fastest flight from Washington, D.C. to Sioux City takes 4h 54m
There are no direct flights from Washington, D.C. to Sioux City. There are no popular flight routes from Washington, D.C. to Sioux City.
Search flight deals

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

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

    A flight from Washington, D.C. to Sioux City Sioux Gateway will travel around 1041.1 mi. In terms of flight time, this usually takes a little over 4h 54m.

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

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

  • How many operators does momondo search for flights from Washington, D.C. to Sioux City Sioux Gateway Airport?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Sioux City Sioux Gateway Airport.

  • What documentation or ID do you need to fly to Sioux City Sioux Gateway Airport?

    The required travel and health documents for your Sioux City Sioux Gateway 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 Sioux City Sioux Gateway Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Washington, D.C. to Sioux City?

Best airlines flying from Washington, D.C. to Sioux City

Compare and see reviews for airlines that fly from Washington, D.C. to Sioux City with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $263Free CancellationRating
7.4
9,562 reviews
Search United Airlines flights

Traveling to a place near Sioux City?

Book flights to Sioux City if you plan to visit one of these locations
Norfolk

Why use momondo?

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

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 Sioux City from Washington, D.C..

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

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

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

momondo provides multiple filters to help you find the best flight to Sioux City from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Washington, D.C. to Sioux City now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sioux City and let you know when they change.

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