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Sioux City

$324+ 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SUX
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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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 September 16, 2025.

Round-trip from

$324
(United Airlines)
From Washington, D.C. Reagan-National to Sioux City Sioux Gateway
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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 September 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 10/86:04 pmDCA - SUX
1 stop5h 56mUnited Airlines
Tue 10/146:51 pmSUX - DCA
2 stops12h 30mUnited Airlines
Deal found 9/15$442
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 10/15:00 pmDCA - SUX
1 stop7h 00mUnited Airlines
Sun 10/57:50 amSUX - DCA
1 stop5h 26mUnited Airlines
Deal found 9/16$489
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/215:00 pmDCA - SUX
1 stop7h 00mUnited Airlines
Tue 10/286:46 pmSUX - DCA
1 stop19h 09mUnited Airlines
Deal found 9/15$532
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/16:00 pmDCA - SUX
1 stop5h 59mUnited Airlines
Sat 11/87:45 amSUX - DCA
1 stop5h 25mUnited Airlines
Deal found 9/15$549
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 10/26:04 pmDCA - SUX
1 stop5h 56mUnited Airlines
Sat 10/47:50 amSUX - DCA
1 stop5h 11mUnited Airlines
Deal found 9/15$575
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/237:00 pmDCA - SUX
1 stop4h 57mUnited Airlines
Sat 9/277:50 amSUX - DCA
1 stop5h 11mUnited Airlines
Deal found 9/16$604
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 10/15:00 pmDCA - SUX
1 stop7h 00mUnited Airlines
Fri 10/36:51 pmSUX - DCA
1 stop19h 16mUnited Airlines
Deal found 9/15$678
This United Airlines deal was found by Cheapflights users on 9/14. 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 10/137:59 pmDCA - SUX
1 stop28h 01mUnited Airlines
Wed 10/156:51 pmSUX - DCA
2 stops12h 30mUnited Airlines
Deal found 9/14$712

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 September 16, 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

Sat 3/7

11:30 am-5:32 pm

1 stop7h 02m

Sioux City Sioux Gateway

Tue 3/10

12:45 pm-8:43 pm

1 stop6h 58m

$324

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Wed 10/8

6:04 pm-11:00 pm

1 stop5h 56m

Sioux City Sioux Gateway

Tue 10/14

6:51 pm-8:21 am

2 stops12h 30m

$442

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Wed 10/1

5:00 pm-11:00 pm

1 stop7h 00m

Sioux City Sioux Gateway

Sun 10/5

7:50 am-2:16 pm

1 stop5h 26m

$489

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Tue 10/21

5:00 pm-11:00 pm

1 stop7h 00m

Sioux City Sioux Gateway

Tue 10/28

6:46 pm-2:55 pm

1 stop19h 09m

$532

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Sat 11/1

6:00 pm-10:59 pm

1 stop5h 59m

Sioux City Sioux Gateway

Sat 11/8

7:45 am-2:10 pm

1 stop5h 25m

$549

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Thu 10/2

6:04 pm-11:00 pm

1 stop5h 56m

Sioux City Sioux Gateway

Sat 10/4

7:50 am-2:01 pm

1 stop5h 11m

$575

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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 September 16, 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 02m. 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

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