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Sioux City

$312+ 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 6/17. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SUX
May 31 — Jun 71
Sun 5/31
Sun 6/7
1 adult, Economy
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Cheap 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 May 1, 2026.

This United Airlines deal was found by Cheapflights users on 4/26. 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.
Sun 5/2411:57 am
DCA
-
SUX
1 stop6h 57m
United Airlines
Tue 6/27:53 am
SUX
-
DCA
1 stop6h 59m
United Airlines
Deal found 4/26$379
This United Airlines deal was found by Cheapflights users on 4/27. 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 6/111:57 am
DCA
-
SUX
1 stop6h 57m
United Airlines
Tue 6/97:53 am
SUX
-
DCA
1 stop5h 29m
United Airlines
Deal found 4/27$415
This United Airlines deal was found by Cheapflights users on 4/29. 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 5/91:00 pm
DCA
-
SUX
1 stop6h 06m
United Airlines
Sat 5/1612:55 pm
SUX
-
DCA
1 stop7h 11m
United Airlines
Deal found 4/29$429
This United Airlines deal was found by Cheapflights users on 4/26. 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.
Sun 5/2411:57 am
DCA
-
SUX
1 stop6h 57m
United Airlines
Wed 6/37:53 am
SUX
-
DCA
1 stop5h 29m
United Airlines
Deal found 4/26$454
This United Airlines deal was found by Cheapflights users on 4/26. 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 5/1111:55 am
DCA
-
SUX
1 stop7h 11m
United Airlines
Fri 5/156:42 pm
SUX
-
DCA
1 stop19h 17m
United Airlines
Deal found 4/26$635
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/154:11 pm
DCA
-
SUX
1 stop8h 21m
United Airlines
Tue 5/1912:55 pm
SUX
-
DCA
1 stop6h 20m
United Airlines
Deal found 4/30$642
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Thu 5/212:00 pm
DCA
-
SUX
1 stop4h 54m
United Airlines
Tue 5/267:53 am
SUX
-
DCA
1 stop24h 01m
United Airlines
Deal found 4/28$663
This United Airlines deal was found by Cheapflights users on 4/29. 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 5/281:00 pm
DCA
-
SUX
1 stop5h 54m
United Airlines
Fri 6/57:53 am
SUX
-
DCA
2 stops13h 00m
United Airlines
Deal found 4/29$672
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Thu 8/611:57 am
DCA
-
SUX
1 stop6h 57m
United Airlines
Wed 8/129:03 am
SUX
-
DCA
1 stop5h 35m
United Airlines
Deal found 4/28$807
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Wed 5/132:00 pm
DCA
-
SUX
1 stop5h 06m
United Airlines
Sun 5/1712:55 pm
SUX
-
DCA
1 stop7h 11m
United Airlines
Deal found 4/28$818

Find 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 May 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$379
(United Airlines)

One-way from

$312
(United Airlines)
Provider with most accurate pricing for Washington, D.C. Reagan-National-Sioux City Sioux Gateway flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-Sioux City Sioux Gateway flights.
Search Deals
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
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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 May 1, 2026.
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

Cheapest round-trip

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Sun 5/24

11:57 am-5:54 pm

1 stop6h 57m

Sioux City Sioux Gateway

Tue 6/2

7:53 am-3:52 pm

1 stop6h 59m

$379

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Mon 6/1

11:57 am-5:54 pm

1 stop6h 57m

Sioux City Sioux Gateway

Tue 6/9

7:53 am-2:22 pm

1 stop5h 29m

$415

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Sun 5/24

11:57 am-5:54 pm

1 stop6h 57m

Sioux City Sioux Gateway

Wed 6/3

7:53 am-2:22 pm

1 stop5h 29m

$454

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Fri 5/15

4:11 pm-11:32 pm

1 stop8h 21m

Sioux City Sioux Gateway

Tue 5/19

12:55 pm-8:15 pm

1 stop6h 20m

$642

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Thu 5/21

2:00 pm-5:54 pm

1 stop4h 54m

Sioux City Sioux Gateway

Tue 5/26

7:53 am-8:54 am

1 stop24h 01m

$663

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Thu 5/28

1:00 pm-5:54 pm

1 stop5h 54m

Sioux City Sioux Gateway

Fri 6/5

7:53 am-9:53 pm

2 stops13h 00m

$672

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Thu 8/6

11:57 am-5:54 pm

1 stop6h 57m

Sioux City Sioux Gateway

Wed 8/12

9:03 am-3:38 pm

1 stop5h 35m

$807
Quickest round-trip

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Wed 5/13

2:00 pm-6:06 pm

1 stop5h 06m

Sioux City Sioux Gateway

Sun 5/17

12:55 pm-9:06 pm

1 stop7h 11m

$818

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Thu 5/28

1:00 pm-5:54 pm

1 stop5h 54m

Sioux City Sioux Gateway

Mon 6/1

7:53 am-3:52 pm

1 stop6h 59m

$895

Washington, D.C.Sioux City

DCA - SUX

DCASUX

Washington, D.C. Reagan-National

Mon 5/11

1:00 pm-6:06 pm

1 stop6h 06m

Sioux City Sioux Gateway

Fri 5/15

6:00 am-7:31 pm

2 stops12h 31m

$940

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 11 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Sioux City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Reagan-National Airport-Sioux City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National Airport-Sioux City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Sioux City flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Reagan-National Airport-Sioux City flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

Reviews of airlines servicing Sioux City

Get insights into the airlines that provide service to Sioux City. 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 Sioux City. Reviews last updated May 1, 2026.
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
9,675 reviews

Crew

8.1

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,675 reviews
United Airlines
7.4
Good
9,675 reviews

Crew

8.1

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

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 1 airline.

  • 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 6h 57m. Your travel time can differ by up to . There are 1040 mi between Washington, D.C. Reagan-National Airport and Sioux City.

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

    United Airlines, at $243, 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.

See more FAQs

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Top airline flying from Reagan-National to Sioux City

Discover the top airline that operate flights from Reagan-National to Sioux City. 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 May 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$243Average$390FlexibilityNo cancel feeOn-time69%

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