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$324+ Cheap flights from Sioux City (SUX) to Dallas

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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — DFW
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Sioux City to Dallas

Cheapest flights from Sioux City to Dallas
Explore the most affordable flight options available from Sioux City to Dallas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/15. 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 12/246:54 pmSUX - DFW
1 stop18h 00mUnited Airlines
Tue 12/304:27 pmDFW - SUX
1 stop6h 48mUnited Airlines
Deal found 12/15$470
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/247:50 amSUX - DFW
1 stop7h 41mUnited Airlines
Sun 12/284:27 pmDFW - SUX
1 stop6h 48mUnited Airlines
Deal found 12/17$493
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/3111:48 amSUX - DFW
1 stop9h 11mUnited Airlines
Sun 1/44:27 pmDFW - SUX
1 stop6h 48mUnited Airlines
Deal found 12/15$662

Find flight deals from Sioux City to Dallas

Discover tips and strategies to find the most affordable flight options for your journey from Sioux City (SUX) to Dallas (A78). 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 December 18, 2025.

Round-trip from

$324
(United Airlines)
From Sioux City Sioux Gateway to Dallas
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux City to Dallas 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 December 18, 2025.
Use the filters below to find and compare flights from Sioux City to Dallas that are best for you.

Fly from

Sioux City

Fly to

Dallas

Route

Depart

Return

Price

Sioux CityDallas

SUX - DFW

SUXDFW

Sioux City Sioux Gateway

Wed 1/21

12:45 pm-6:21 pm

1 stop5h 36m

Dallas/Fort Worth

Sat 1/24

4:45 pm-11:47 pm

1 stop7h 02m

$324

Sioux CityDallas

SUX - DFW

SUXDFW

Sioux City Sioux Gateway

Fri 1/9

6:00 am-11:12 am

1 stop5h 12m

Dallas/Fort Worth

Tue 1/13

7:00 am-5:28 pm

1 stop10h 28m

$389

Sioux CityDallas

SUX - DFW

SUXDFW

Sioux City Sioux Gateway

Wed 12/24

6:54 pm-12:54 pm

1 stop18h 00m

Dallas/Fort Worth

Tue 12/30

4:27 pm-11:15 pm

1 stop6h 48m

$470

Sioux CityDallas

SUX - DFW

SUXDFW

Sioux City Sioux Gateway

Wed 12/24

7:50 am-3:31 pm

1 stop7h 41m

Dallas/Fort Worth

Sun 12/28

4:27 pm-11:15 pm

1 stop6h 48m

$493

Sioux CityDallas

SUX - DFW

SUXDFW

Sioux City Sioux Gateway

Wed 12/31

11:48 am-8:59 pm

1 stop9h 11m

Dallas/Fort Worth

Sun 1/4

4:27 pm-11:15 pm

1 stop6h 48m

$662

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Best time to book a flight from Sioux City to Dallas

Have a flexible travel schedule? Discover the best time to fly to Dallas 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 Dallas

What is the cheapest month to book a flight from Sioux City to Dallas?

Currently, February is the cheapest month in which you can book a flight from Sioux City to Dallas (average of $151). Flying from Sioux City to Dallas in June is currently the most expensive (average of $295). 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 SUX to DFW?

Find hourly flight availability from Sioux City to Dallas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

It’s typically best to fly out from Sioux City to Dallas at noon. Doing so could potentially save you 33% on the flight price compared to flying in the evening, which is usually more expensive.

Reviews of airlines servicing Dallas

Get insights into the airlines that provide service to Dallas. 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 Dallas. Reviews last updated December 18, 2025.
See what other customers who have flown with United Airlines from Sioux City to Dallas 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
9,091 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability
United Airlines
7.4
Good
9,091 reviews
United Airlines
7.4
Good
9,091 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

Related info for your journey

Find useful and relevant information for your journey from Sioux City to Dallas. 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 Dallas?

    If you book a flight to Dallas from Sioux City, you will be flying from 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 Sioux Gateway to Dallas per day from 1 airline.

  • How long is the flight from Sioux City to Dallas?

    There are many flights that can get you from Sioux City to Dallas in 5h 36m. Fly via United Airlines to get the fastest option. The distance between Sioux City and Dallas is about 657 mi.

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

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

  • How can I find direct flights from Sioux City to Dallas?

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

  • Can I find deals for business class flights from Sioux City to Dallas?

    Yes. Cheapflights offers flight deals from Sioux City to Dallas 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 Dallas?

    Currently, February is the cheapest month in which you can book a flight from Sioux City to Dallas (average of $151). Flying from Sioux City to Dallas in June is currently the most expensive (average of $295). 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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Top airline flying from Sioux City to Dallas

Discover the top airline that operate flights from Sioux City to Dallas. 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$303Average$469FlexibilityNo cancel feeOn-time69%

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