HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sioux City

$183+ Cheap flights from Reagan-National (DCA) to Sioux City (SUX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SUX
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Reagan-National to Sioux City with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Reagan-National to Sioux City

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Sioux City (SUX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 20, 2025.

Round-trip from

$450
(United Airlines)

One-way from

$183
(United Airlines)
From Washington, D.C. Reagan-National to Sioux City Sioux Gateway
Search Deals
One-way flight from Washington, D.C. Reagan-National to Sioux City Sioux Gateway
Search Deals

Find flight deals from Reagan-National to Sioux City

Cheapest flights from Reagan-National to Sioux City
Explore the most affordable flight options available from Reagan-National to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/65:00 pmDCA - SUX
1 stop7h 00mUnited Airlines
Thu 10/97:50 amSUX - DCA
1 stop7h 01mUnited Airlines
Deal found 8/20$450
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/27:00 pmDCA - SUX
1 stop4h 57mUnited Airlines
Sat 9/67:49 amSUX - DCA
1 stop5h 12mUnited Airlines
Deal found 8/18$464
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/198:00 pmDCA - SUX
1 stop27h 57mUnited Airlines
Sun 9/217:49 amSUX - DCA
1 stop25h 09mUnited Airlines
Deal found 8/20$541

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Sioux City that are best for you.

Fly from

Reagan-National

Fly to

Sioux City

Route

Depart

Return

Price

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Mon 10/6

5:00 pm-11:00 pm

1 stop7h 00m

Sioux City Sioux Gateway

Thu 10/9

7:50 am-3:51 pm

1 stop7h 01m

$450

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Tue 9/2

7:00 pm-10:57 pm

1 stop4h 57m

Sioux City Sioux Gateway

Sat 9/6

7:49 am-2:01 pm

1 stop5h 12m

$464

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Fri 9/19

8:00 pm-10:57 pm

1 stop27h 57m

Sioux City Sioux Gateway

Sun 9/21

7:49 am-9:58 am

1 stop25h 09m

$541

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Mon 9/15

5:00 pm-10:57 pm

1 stop6h 57m

$183

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Best time to book a flight from Reagan-National to Sioux City

Have a flexible travel schedule? Discover the best time to fly to Sioux City from Reagan-National with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Sioux City

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Sioux City?

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Sioux City (average of $318). Flying from Washington, D.C. Reagan-National Airport to Sioux City in March is currently the most expensive (average of $446). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DCA to SUX?

Find hourly flight availability from Reagan-National to Sioux City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to Sioux City as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Sioux City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sioux City from Washington, D.C. Reagan-National?

    If you book a flight to Sioux City from Washington, D.C. Reagan-National, you will be flying to Sioux Gateway, which is the city’s only airport. Sioux City Sioux Gateway (SUX) is located 7.0 mi from the center of Sioux City. There are 0 flights from Washington, D.C. Reagan-National to Sioux Gateway per day from 0 different airlines.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Sioux City?

    United Airlines can get you from Washington, D.C. Reagan-National Airport to Sioux City in just under 7h. Your travel time can differ by up to . There are 1040 mi between Washington, D.C. Reagan-National Airport and Sioux City.

  • Can I find deals for flights from Reagan-National to Sioux City that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Sioux City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Sioux City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Sioux City.

  • Can I find deals for business class flights from Reagan-National to Sioux City?

    Yes. Cheapflights offers flight deals from Reagan-National to Sioux City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Sioux City?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Sioux City (average of $318). Flying from Washington, D.C. Reagan-National Airport to Sioux City in March is currently the most expensive (average of $446). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Sioux City?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Reagan-National to Sioux City

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Omaha flights
Dulles Intl to Omaha flights
Reagan-National to Des Moines flights
Baltimore to Omaha flights
Dulles Intl to Des Moines flights
Baltimore to Des Moines flights
Dulles Intl to Moline flights
Reagan-National to Cedar Rapids flights
Dulles Intl to Cedar Rapids flights
Baltimore to Cedar Rapids flights
Reagan-National to Moline flights
Baltimore to Moline flights
Dulles Intl to La Crosse flights
Baltimore to Sioux City flights
Baltimore to Burlington flights
Reagan-National to La Crosse flights
Baltimore to La Crosse flights
Dulles Intl to Waterloo flights
Baltimore to Waterloo flights
Baltimore to Kirksville flights
Reagan-National to Waterloo flights
Dulles Intl to Sioux City flights
Dulles Intl to Kirksville flights
Dulles Intl to Dubuque flights
Reagan-National to Dubuque flights
Baltimore to Dubuque flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.