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Reagan-National

$369+ Cheap flights from Sioux City (SUX) to Reagan-National (DCA)

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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — DCA
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from Sioux City to Reagan-National

Discover tips and strategies to find the most affordable flight options for your journey from Sioux City (SUX) to Reagan-National (DCA). 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 July 29, 2025.

Round-trip from

$369
(United Airlines)
From Sioux City Sioux Gateway to Washington, D.C. Reagan-National
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Find flight deals from Sioux City to Reagan-National

Cheapest flights from Sioux City to Reagan-National
Explore the most affordable flight options available from Sioux City to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This United Airlines deal was found by Cheapflights users on 7/28. 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 10/147:50 amSUX - DCA
1 stop5h 26mUnited Airlines
Tue 10/217:00 pmDCA - SUX
1 stop5h 00mUnited Airlines
Deal found 7/28$369

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux City to Reagan-National 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 July 29, 2025.
Use the filters below to find and compare flights from Sioux City to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Sioux City

Fly to

Reagan-National

Route

Depart

Return

Price

Sioux CityWashington, D.C.

SUX - DCA

SUXDCA

Sioux City Sioux Gateway

Tue 10/14

7:50 am-2:16 pm

1 stop5h 26m

Washington, D.C. Reagan-National

Tue 10/21

7:00 pm-11:00 pm

1 stop5h 00m

$369

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Sioux City 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 Sioux City to Washington, D.C. Reagan-National Airport

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

Currently, February is the cheapest month in which you can book a flight from Sioux City to Washington, D.C. Reagan-National Airport (average of $278). Flying from Sioux City to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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.

Reviews of airlines servicing Reagan-National

Get insights into the airlines that provide service to Reagan-National. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Reagan-National. Reviews last updated July 29, 2025.
Read reviews from past customers who have flown United Airlines from Sioux City to Washington, D.C. Reagan-National Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,899 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

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
8,899 reviews
United Airlines
7.4
Good
8,899 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

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

Find useful and relevant information for your journey from Sioux City to Reagan-National. 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 from for flights from Sioux City to Washington, D.C. Reagan-National?

    Sioux City Sioux Gateway (SUX), located 7.0 mi from the city center, is the airport you fly out of when you book flights from Sioux City to Washington, D.C. Reagan-National. 1 airline have flights from Sioux Gateway to Washington, D.C. Reagan-National on a regular basis. Booking flights from Sioux City Sioux Gateway to Washington, D.C. Reagan-National should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. Reagan-National per day.

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

    United Airlines, at $369, was found to be the cheapest airline from Sioux City to Washington, D.C. Reagan-National Airport..

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sioux City to Reagan-National 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 Sioux City to Washington, D.C. Reagan-National Airport?

    Currently, February is the cheapest month in which you can book a flight from Sioux City to Washington, D.C. Reagan-National Airport (average of $278). Flying from Sioux City to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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 Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Fredericksburg
Gaithersburg
Easton
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
Springfield
National Harbor
Dundalk

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Top airline flying from Sioux City to Reagan-National

Discover the top airline that operate flights from Sioux City to Reagan-National. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$269Average$483FlexibilityNo cancel feeOn-time69%

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