What is the cheapest airline to fly from Washington, D.C. Reagan-National Airport to Sioux City round-trip?

United Airlines, at $389, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to Sioux City..

In terms of precipitation, rainfall in Sioux City ranges from 0.7 - 4.2 inches per month. June is typically the wettest month, when rainfall can reach 4.2 in. January is typically the driest time to visit Sioux City when rainfall is around 0.7 in.

If weather is an important factor for your trip to Sioux City, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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.

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.

$389+ Flights from Washington, D.C. Reagan-National Airport to Sioux City

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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

Round-trip from	$389 (United Airlines)

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 July 3, 2025.

Tue 8/197:00 pmDCA - SUX

1 stop4h 57mUnited Airlines

Tue 8/267:49 amSUX - DCA

1 stop7h 02mUnited Airlines

Deal found 7/2

$389

Best flights from Reagan-National to Sioux City
Discover carefully curated flight deals from Reagan-National to Sioux City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Tue 8/197:00 pmDCA - SUX

1 stop4h 57mUnited Airlines

Tue 8/267:49 amSUX - DCA

1 stop7h 02mUnited Airlines

Deal found 7/2

$389

Last-minute flights from Reagan-National to Sioux City
Discover last-minute flight deals from Reagan-National to Sioux City. Data last updated July 3, 2025 and is based on user searches.

Sun 7/136:00 pmDCA - SUX

1 stop5h 40mUnited Airlines

Tue 7/156:53 pmSUX - DCA

1 stop19h 12mUnited Airlines

Deal found 7/1

$822

Tue 8/197:00 pmDCA - SUX

1 stop4h 57mUnited Airlines

Tue 8/267:49 amSUX - DCA

1 stop7h 02mUnited Airlines

Deal found 7/2

$389

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Tue 8/19

7:00 pm-10:57 pm

1 stop4h 57m

Sioux City Sioux Gateway

Tue 8/26

7:49 am-3:51 pm

1 stop7h 02m

$389

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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?

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.

Reviews of airlines servicing Sioux City

See what other customers who have flown with United Airlines from Washington, D.C. Reagan-National Airport to Sioux City have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,861 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines

7.4

Good

8,861 reviews

United Airlines

7.4

Good

8,861 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

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.
What is the cheapest airline to fly from Washington, D.C. Reagan-National Airport to Sioux City round-trip?
United Airlines, at $389, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to 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

Norfolk

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Reagan-National to Sioux City

Other flights from Reagan-National

Reagan-National to Orlando flights

Reagan-National to LaGuardia flights

Reagan-National to Traverse City flights

Reagan-National to West Palm Beach flights

Reagan-National to Fort Lauderdale flights

Reagan-National to Love Field flights

Other flights to Sioux City

O'Hare Intl to Sioux City flights

Denver to Sioux City flights

Sioux City to Chicago O'Hare Intl Airport flights

Sioux City to Denver flights

Sioux City to Chicago O'Hare Intl Airport flights

Sioux City to Denver 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.

$389+ Cheap flights from Reagan-National (DCA) to Sioux City (SUX)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/19. Fares are subject to change and may not be available on all flights or dates of travel.

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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Reagan-National to Sioux City

Round-trip from

Find flight deals from Reagan-National to Sioux City

Cheapest flights from Reagan-National to Sioux CityExplore 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 July 3, 2025.

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 July 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Sioux City that are best for you.

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.

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?

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 July 3, 2025.

Reviews of airlines servicing Sioux City

See what other customers who have flown with United Airlines from Washington, D.C. Reagan-National Airport to Sioux City have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

What is the cheapest airline to fly from Washington, D.C. Reagan-National Airport to Sioux City round-trip?

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

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

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

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

Traveling to a place near Washington, D.C. Reagan-National Airport?

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.

100% Free

Book with Flexibility

Travel Smart

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 July 3, 2025.