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Cheap flights from Washington, D.C. to Sioux City from $344

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 1/10. 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
4:10 pm - 11:47 pm
BWI
-
SUX
8h 37m1 stop
United Airlines Logo
12:45 pm - 9:21 pm
SUX
-
BWI
7h 36m1 stop
$344United Airlines
Sat, Jan 10 - Wed, Jan 14
United Airlines Logo
12:00 pm - 5:28 pm
DCA
-
SUX
6h 28m1 stop
United Airlines Logo
12:45 pm - 9:00 pm
SUX
-
DCA
7h 15m1 stop
$344United Airlines
Tue, Jan 20 - Sat, Jan 24
United Airlines Logo
10:20 pm - 11:47 pm
IAD
-
SUX
26h 27m2 stops
United Airlines Logo
12:45 pm - 9:17 pm
SUX
-
IAD
7h 32m1 stop
$433United Airlines
Sat, Jan 24 - Wed, Jan 28
United Airlines Logo
10:28 pm - 5:28 pm
IAD
-
SUX
20h 00m1 stop
United Airlines Logo
12:45 pm - 9:17 pm
SUX
-
IAD
7h 32m1 stop
$439United Airlines
Sat, Jan 24 - Wed, Jan 28
United Airlines Logo
4:10 pm - 11:47 pm
BWI
-
SUX
8h 37m1 stop
United Airlines Logo
6:43 pm - 11:20 am
SUX
-
BWI
15h 37m2 stops
$477United Airlines
Sat, Jan 10 - Wed, Jan 14
United Airlines Logo
10:30 am - 5:28 pm
DCA
-
SUX
7h 58m1 stop
United Airlines Logo
12:45 pm - 2:39 pm
SUX
-
DCA
24h 54m2 stops
$498United Airlines
Tue, Jan 20 - Sat, Jan 24
United Airlines Logo
10:20 pm - 5:28 pm
IAD
-
SUX
20h 08m2 stops
United Airlines Logo
12:45 pm - 7:30 am
SUX
-
IAD
17h 45m2 stops
$517United Airlines
Sat, Jan 24 - Wed, Jan 28
United Airlines Logo
4:03 pm - 11:41 pm
BWI
-
SUX
8h 38m1 stop
United Airlines Logo
6:10 am - 3:01 pm
SUX
-
BWI
7h 51m1 stop
$546United Airlines
Mon, Mar 9 - Wed, Mar 11
United Airlines Logo
4:03 pm - 11:41 pm
BWI
-
SUX
8h 38m1 stop
United Airlines Logo
6:10 am - 3:58 pm
SUX
-
BWI
8h 48m2 stops
$584United Airlines
Mon, Mar 16 - Wed, Mar 18
United Airlines Logo
5:19 pm - 11:15 pm
BWI
-
SUX
6h 56m1 stop
United Airlines Logo
7:50 am - 4:58 pm
SUX
-
BWI
8h 08m1 stop
$681United Airlines
Tue, Dec 30 - Sat, Jan 3

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
Jan 10
BWI4:10 pmBaltimore/Washington
8h 37m
1 stop
SUX11:47 pmSioux City Sioux Gateway
Jan 14
SUX12:45 pmSioux City Sioux Gateway
7h 36m
1 stop
BWI9:21 pmBaltimore/Washington
$344
Find similar
United Airlines
Jan 24
IAD10:20 pmWashington, D.C. Dulles Intl
26h 27m
2 stops
SUX11:47 pmSioux City Sioux Gateway
Jan 28
SUX12:45 pmSioux City Sioux Gateway
7h 32m
1 stop
IAD9:17 pmWashington, D.C. Dulles Intl
$433
Find similar
United Airlines
Jan 24
IAD10:28 pmWashington, D.C. Dulles Intl
20h 00m
1 stop
SUX5:28 pmSioux City Sioux Gateway
Jan 28
SUX12:45 pmSioux City Sioux Gateway
7h 32m
1 stop
IAD9:17 pmWashington, D.C. Dulles Intl
$439
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 December 18, 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

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Sat 1/10

4:10 pm-11:47 pm

1 stop8h 37m

Sioux City Sioux Gateway

Wed 1/14

12:45 pm-9:21 pm

1 stop7h 36m

$344

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Tue 1/20

12:00 pm-5:28 pm

1 stop6h 28m

Sioux City Sioux Gateway

Sat 1/24

12:45 pm-9:00 pm

1 stop7h 15m

$344

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sat 1/24

10:20 pm-11:47 pm

2 stops26h 27m

Sioux City Sioux Gateway

Wed 1/28

12:45 pm-9:17 pm

1 stop7h 32m

$433

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sat 1/24

10:28 pm-5:28 pm

1 stop20h 00m

Sioux City Sioux Gateway

Wed 1/28

12:45 pm-9:17 pm

1 stop7h 32m

$439

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Sat 1/10

4:10 pm-11:47 pm

1 stop8h 37m

Sioux City Sioux Gateway

Wed 1/14

6:43 pm-11:20 am

2 stops15h 37m

$477

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Tue 1/20

10:30 am-5:28 pm

1 stop7h 58m

Sioux City Sioux Gateway

Sat 1/24

12:45 pm-2:39 pm

2 stops24h 54m

$498

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Sat 1/24

10:20 pm-5:28 pm

2 stops20h 08m

Sioux City Sioux Gateway

Wed 1/28

12:45 pm-7:30 am

2 stops17h 45m

$517

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Mon 3/9

4:03 pm-11:41 pm

1 stop8h 38m

Sioux City Sioux Gateway

Wed 3/11

6:10 am-3:01 pm

1 stop7h 51m

$546

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Mon 3/16

4:03 pm-11:41 pm

1 stop8h 38m

Sioux City Sioux Gateway

Wed 3/18

6:10 am-3:58 pm

2 stops8h 48m

$584

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Tue 12/30

5:19 pm-11:15 pm

1 stop6h 56m

Sioux City Sioux Gateway

Sat 1/3

7:50 am-4:58 pm

1 stop8h 08m

$681

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 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

Fastest flight time

5h 23m

Direct flights

None
The fastest flight from Washington, D.C. to Sioux City takes 5h 23m
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

  • 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 23m.

  • 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
9,091 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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