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Cheap flights from Washington, D.C. to Sioux City from $339

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 7/24. 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
1:00 pm - 6:23 pm
DCA
-
SUX
6h 23m
1 stop
United Airlines Logo
8:35 am - 1:59 pm
SUX
-
DCA
4h 24m
1 stop
$394United Airlines
Wed, Oct 14 - Sat, Oct 17
United Airlines Logo
1:00 pm - 5:53 pm
DCA
-
SUX
5h 53m
1 stop
United Airlines Logo
8:08 am - 3:52 pm
SUX
-
DCA
6h 44m
1 stop
$497United Airlines
Mon, Jun 22 - Wed, Jun 24
United Airlines Logo
2:00 pm - 6:23 pm
DCA
-
SUX
5h 23m
1 stop
United Airlines Logo
8:35 am - 7:46 am
SUX
-
DCA
22h 11m
2 stops
$518United Airlines
Wed, Oct 14 - Sat, Oct 17
United Airlines Logo
1:00 pm - 5:53 pm
DCA
-
SUX
5h 53m
1 stop
United Airlines Logo
7:45 am - 9:09 pm
SUX
-
DCA
12h 24m
1 stop
$548United Airlines
Thu, Jul 30 - Thu, Aug 13
United Airlines Logo
7:30 am - 11:42 pm
DCA
-
SUX
17h 12m
3 stops
United Airlines Logo
8:35 am - 1:59 pm
SUX
-
DCA
4h 24m
1 stop
$583United Airlines
Wed, Oct 14 - Sat, Oct 17
United Airlines Logo
1:04 pm - 5:53 pm
DCA
-
SUX
5h 49m
1 stop
United Airlines Logo
9:03 am - 7:09 pm
SUX
-
DCA
9h 06m
1 stop
$593United Airlines
Mon, Aug 31 - Wed, Sep 9
United Airlines Logo
11:57 am - 5:53 pm
DCA
-
SUX
6h 56m
1 stop
United Airlines Logo
9:03 am - 9:59 pm
SUX
-
DCA
11h 56m
2 stops
$598United Airlines
Mon, Aug 31 - Wed, Sep 9
United Airlines Logo
10:23 pm - 10:57 am
IAD
-
SUX
13h 34m
1 stop
United Airlines Logo
7:45 am - 1:55 pm
SUX
-
IAD
5h 10m
1 stop
$603United Airlines
Thu, Jul 30 - Thu, Aug 13
United Airlines Logo
10:15 pm - 5:53 pm
IAD
-
SUX
20h 38m
1 stop
United Airlines Logo
8:08 am - 4:30 pm
SUX
-
IAD
7h 22m
1 stop
$647United Airlines
Mon, Jun 22 - Wed, Jun 24
United Airlines Logo
1:00 pm - 5:53 pm
BWI
-
SUX
5h 53m
1 stop
United Airlines Logo
11:32 am - 7:34 pm
SUX
-
BWI
7h 02m
1 stop
$648United Airlines
Mon, Aug 31 - Wed, Sep 9

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
Oct 14
DCA1:00 pmWashington, D.C. Reagan-National
6h 23m
1 stop
SUX6:23 pmSioux City Sioux Gateway
Oct 17
SUX8:35 amSioux City Sioux Gateway
4h 24m
1 stop
DCA1:59 pmWashington, D.C. Reagan-National
$394
United Airlines
Jun 22
DCA1:00 pmWashington, D.C. Reagan-National
5h 53m
1 stop
SUX5:53 pmSioux City Sioux Gateway
Jun 24
SUX8:08 amSioux City Sioux Gateway
6h 44m
1 stop
DCA3:52 pmWashington, D.C. Reagan-National
$497
United Airlines
Oct 14
DCA2:00 pmWashington, D.C. Reagan-National
5h 23m
1 stop
SUX6:23 pmSioux City Sioux Gateway
Oct 17
SUX8:35 amSioux City Sioux Gateway
22h 11m
2 stops
DCA7:46 amWashington, D.C. Reagan-National
$518

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 May 23, 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
Quickest round-trip

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Wed 10/14

1:00 pm-6:23 pm

1 stop6h 23m

Sioux City Sioux Gateway

Sat 10/17

8:35 am-1:59 pm

1 stop4h 24m

$394

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Mon 6/22

1:00 pm-5:53 pm

1 stop5h 53m

Sioux City Sioux Gateway

Wed 6/24

8:08 am-3:52 pm

1 stop6h 44m

$497

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Wed 10/14

2:00 pm-6:23 pm

1 stop5h 23m

Sioux City Sioux Gateway

Sat 10/17

8:35 am-7:46 am

2 stops22h 11m

$518

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Thu 7/30

1:00 pm-5:53 pm

1 stop5h 53m

Sioux City Sioux Gateway

Thu 8/13

7:45 am-9:09 pm

1 stop12h 24m

$548

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Wed 10/14

7:30 am-11:42 pm

3 stops17h 12m

Sioux City Sioux Gateway

Sat 10/17

8:35 am-1:59 pm

1 stop4h 24m

$583

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Mon 8/31

1:04 pm-5:53 pm

1 stop5h 49m

Sioux City Sioux Gateway

Wed 9/9

9:03 am-7:09 pm

1 stop9h 06m

$593

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Mon 8/31

11:57 am-5:53 pm

1 stop6h 56m

Sioux City Sioux Gateway

Wed 9/9

9:03 am-9:59 pm

2 stops11h 56m

$598

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Thu 7/30

10:23 pm-10:57 am

1 stop13h 34m

Sioux City Sioux Gateway

Thu 8/13

7:45 am-1:55 pm

1 stop5h 10m

$603

Washington, D.C.Sioux City

IAD - SUX

IADSUX

Washington, D.C. Dulles Intl

Mon 6/22

10:15 pm-5:53 pm

1 stop20h 38m

Sioux City Sioux Gateway

Wed 6/24

8:08 am-4:30 pm

1 stop7h 22m

$647

BaltimoreSioux City

BWI - SUX

BWISUX

Baltimore/Washington

Mon 8/31

1:00 pm-5:53 pm

1 stop5h 53m

Sioux City Sioux Gateway

Wed 9/9

11:32 am-7:34 pm

1 stop7h 02m

$648

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, United Airlines and Southwest 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 39% of people opting to fly with this airline when traveling to Sioux City. Keep in mind that there are 5 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

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

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 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.

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
9,751 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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