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Cheap flights from Washington, D.C. to Sioux City from $266

This is the cheapest one-way 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 11/12. 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 Washington, D.C. to Sioux City

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
1:02 pm - 5:32 pmIAD-SUX
5h 30m1 stop
United Airlines Logo
12:45 pm - 9:15 pmSUX-IAD
7h 30m1 stop
$324United Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10
United Airlines Logo
4:06 pm - 11:34 pmBWI-SUX
8h 28m1 stop
United Airlines Logo
12:45 pm - 9:27 pmSUX-BWI
7h 42m1 stop
$364United Airlines
Find Deal
Tue, Feb 24 - Sat, Feb 28
United Airlines Logo
1:02 pm - 5:32 pmIAD-SUX
5h 30m1 stop
United Airlines Logo
12:45 pm - 11:51 amSUX-IAD
22h 06m2 stops
$413United Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10
United Airlines Logo
4:06 pm - 11:34 pmBWI-SUX
8h 28m1 stop
United Airlines Logo
6:00 am - 4:05 pmSUX-BWI
9h 05m2 stops
$439United Airlines
Find Deal
Tue, Feb 24 - Sat, Feb 28
United Airlines Logo
1:00 pm - 5:32 pmDCA-SUX
5h 32m1 stop
United Airlines Logo
12:45 pm - 8:59 pmSUX-DCA
7h 14m1 stop
$454United Airlines
Find Deal
Wed, Mar 4 - Sat, Mar 7
United Airlines Logo
12:00 pm - 5:32 pmDCA-SUX
6h 32m1 stop
United Airlines Logo
12:45 pm - 8:59 pmSUX-DCA
7h 14m1 stop
$514United Airlines
Find Deal
Wed, Mar 4 - Sat, Mar 7
United Airlines Logo
10:10 am - 6:08 pmBWI-SUX
8h 58m1 stop
United Airlines Logo
6:46 pm - 3:10 pmSUX-BWI
19h 24m1 stop
$518United Airlines
Find Deal
Sat, Nov 8 - Wed, Nov 12
United Airlines Logo
10:10 am - 6:08 pmBWI-SUX
8h 58m1 stop
United Airlines Logo
6:46 pm - 5:14 pmSUX-BWI
21h 28m2 stops
$528United Airlines
Find Deal
Sat, Nov 8 - Wed, Nov 12
United Airlines Logo
4:06 pm - 11:34 pmBWI-SUX
8h 28m1 stop
United Airlines Logo
6:00 am - 10:24 pmSUX-BWI
15h 24m3 stops
$535United Airlines
Find Deal
Tue, Feb 24 - Sat, Feb 28
United Airlines Logo
8:15 am - 5:32 pmIAD-SUX
10h 17m2 stops
United Airlines Logo
6:00 am - 8:58 pmSUX-IAD
13h 58m2 stops
$558United Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10

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
Mar 7
IAD1:02 pmWashington, D.C. Dulles Intl
5h 30m
1 stop
SUX5:32 pmSioux City Sioux Gateway
Mar 10
SUX12:45 pmSioux City Sioux Gateway
7h 30m
1 stop
IAD9:15 pmWashington, D.C. Dulles Intl
$324
Find similar
United Airlines
Feb 24
BWI4:06 pmBaltimore/Washington
8h 28m
1 stop
SUX11:34 pmSioux City Sioux Gateway
Feb 28
SUX12:45 pmSioux City Sioux Gateway
7h 42m
1 stop
BWI9:27 pmBaltimore/Washington
$364
Find similar
United Airlines
Mar 7
IAD1:02 pmWashington, D.C. Dulles Intl
5h 30m
1 stop
SUX5:32 pmSioux City Sioux Gateway
Mar 10
SUX12:45 pmSioux City Sioux Gateway
22h 06m
2 stops
IAD11:51 amWashington, D.C. Dulles Intl
$413
Find similar

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 October 14, 2025.
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

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sat 3/7

1:02 pm-5:32 pm

1 stop5h 30m

Sioux City Sioux Gateway

Tue 3/10

12:45 pm-9:15 pm

1 stop7h 30m

$324

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Tue 2/24

4:06 pm-11:34 pm

1 stop8h 28m

Sioux City Sioux Gateway

Sat 2/28

12:45 pm-9:27 pm

1 stop7h 42m

$364

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sat 3/7

1:02 pm-5:32 pm

1 stop5h 30m

Sioux City Sioux Gateway

Tue 3/10

12:45 pm-11:51 am

2 stops22h 06m

$413

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Tue 2/24

4:06 pm-11:34 pm

1 stop8h 28m

Sioux City Sioux Gateway

Sat 2/28

6:00 am-4:05 pm

2 stops9h 05m

$439

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Wed 3/4

1:00 pm-5:32 pm

1 stop5h 32m

Sioux City Sioux Gateway

Sat 3/7

12:45 pm-8:59 pm

1 stop7h 14m

$454

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Wed 3/4

12:00 pm-5:32 pm

1 stop6h 32m

Sioux City Sioux Gateway

Sat 3/7

12:45 pm-8:59 pm

1 stop7h 14m

$514

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Sat 11/8

10:10 am-6:08 pm

1 stop8h 58m

Sioux City Sioux Gateway

Wed 11/12

6:46 pm-3:10 pm

1 stop19h 24m

$518

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Sat 11/8

10:10 am-6:08 pm

1 stop8h 58m

Sioux City Sioux Gateway

Wed 11/12

6:46 pm-5:14 pm

2 stops21h 28m

$528

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Tue 2/24

4:06 pm-11:34 pm

1 stop8h 28m

Sioux City Sioux Gateway

Sat 2/28

6:00 am-10:24 pm

3 stops15h 24m

$535

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sat 3/7

8:15 am-5:32 pm

2 stops10h 17m

Sioux City Sioux Gateway

Tue 3/10

6:00 am-8:58 pm

2 stops13h 58m

$558

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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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 day to depart on your flight to Sioux City?

On average, the least expensive day to fly to Sioux City from Washington, D.C. is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $354. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Washington, D.C. because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $659.

What is the cheapest time of day to depart on your flight to Sioux City?

The cheapest time of day to fly to Sioux City is in the evening when flights can be purchased for as low as $421. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $743 on average. Flights to Sioux City from Washington, D.C. in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Direct flights

None
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.
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  • 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 5h 30m.

  • 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 $367Free CancellationRating
7.4
8,974 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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