HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dallas

$244+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — DFW
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Sioux City to Dallas 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 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 July 31, 2025.

Round-trip from

$244
(United Airlines)

Popular in

November

Cheapest in

December

Average price

$303
From Sioux City Sioux Gateway to Dallas
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find 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 July 31, 2025.

This United Airlines deal was found by Cheapflights users on 7/31. 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 8/156:53 pmSUX - DFW
1 stop5h 06mUnited Airlines
Tue 8/194:24 pmDFW - SUX
1 stop6h 33mUnited Airlines
Deal found 7/31$244

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 July 31, 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

Fri 8/15

6:53 pm-11:59 pm

1 stop5h 06m

Dallas/Fort Worth

Tue 8/19

4:24 pm-10:57 pm

1 stop6h 33m

$244

Sioux CityDallas

SUX - DFW

SUXDFW

Sioux City Sioux Gateway

Tue 8/26

7:49 am-9:03 am

2 stops25h 14m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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, August is the cheapest month in which you can book a flight from Sioux City to Dallas (average of $216). Flying from Sioux City to Dallas in March 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 July 31, 2025.

It’s typically best to fly out from Sioux City to Dallas in the morning. Doing so could potentially save you 26% on the flight price compared to flying at noon, 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 July 31, 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
8,900 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

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
8,900 reviews
United Airlines
7.4
Good
8,900 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

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 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.

  • What is the cheapest airline to fly from Sioux City to Dallas round-trip?

    According to our current data, United Airlines ($244), offers the cheapest pricing from Sioux City to Dallas. United Airlines is priced at 40% lower than the current average price of a flight leaving 3 months from now.

  • 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, August is the cheapest month in which you can book a flight from Sioux City to Dallas (average of $216). Flying from Sioux City to Dallas in March 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

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 Sioux City to Dallas

See prices for flight routes from nearby airports that may be better suited for you.
Des Moines to George Bush Intcntl flights
Des Moines to Hobby flights
Cedar Rapids to Dallas/Fort Worth flights
Des Moines to Dallas/Fort Worth flights
Omaha to Dallas/Fort Worth flights
Moline to Dallas/Fort Worth flights
Omaha to Hobby flights
Cedar Rapids to Hobby flights
Omaha to George Bush Intcntl flights
Omaha to Austin flights
Des Moines to San Antonio flights
Cedar Rapids to George Bush Intcntl flights
Omaha to Love Field flights
Moline to Hobby flights
Moline to George Bush Intcntl flights
Des Moines to Love Field flights
Moline to San Antonio flights
Cedar Rapids to Austin flights
Cedar Rapids to San Antonio flights
Omaha to San Antonio flights
Moline to Austin flights
Des Moines to Austin flights
Omaha to Corpus Christi flights
Des Moines to McAllen flights
Moline to Love Field flights
Des Moines to Brownsville flights
Cedar Rapids to Corpus Christi flights
Cedar Rapids to Love Field flights
Omaha to Brownsville flights
Omaha to McAllen flights
Des Moines to El Paso flights
Omaha to El Paso flights
Des Moines to Harlingen flights
La Crosse to Dallas/Fort Worth flights
Cedar Rapids to El Paso flights
Omaha to Harlingen flights
Cedar Rapids to Harlingen flights
Moline to McAllen flights
Cedar Rapids to McAllen flights
Cedar Rapids to Amarillo flights
Moline to El Paso flights
Moline to Brownsville flights
Waterloo to Dallas/Fort Worth flights
La Crosse to Hobby flights
Omaha to Amarillo flights
Moline to Killeen flights
Cedar Rapids to Brownsville flights
Omaha to Lubbock flights
Waterloo to Hobby flights

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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$303Average$442FlexibilityNo cancel feeOn-time69%

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.