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$158+ Cheap flights from Sioux City (SUX) to the United States

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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — LAX
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheap flight deals from Sioux City to USA

Keep the following information in mind while searching for Sioux City to USA flight deals. Data was last updated August 18, 2025.

Round-trip from

$254
(United Airlines)

One-way from

$158
(United Airlines)

Good round-trip deal

$303 or less

Good one-way deal

$223 or less
From Sioux City Sioux Gateway to USA
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One-way flight from Sioux City Sioux Gateway to USA
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Price to beat on a round-trip flight from Sioux City Sioux Gateway to USA.
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Price to beat on a one-way flight from Sioux City Sioux Gateway to USA.
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Find flight deals from Sioux City to USA

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

This United Airlines deal was found by Cheapflights users on 8/17. 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.
Tue 9/166:48 pmSUX - DEN
Nonstop1h 47mUnited Airlines
Tue 9/233:40 pmDEN - SUX
Nonstop1h 33mUnited Airlines
Deal found 8/17$254
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Fri 9/56:48 pmSUX - DEN
Nonstop1h 47mUnited Airlines
Thu 9/113:40 pmDEN - SUX
Nonstop1h 33mUnited Airlines
Deal found 8/17$262
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Fri 12/267:50 amSUX - ORD
Nonstop1h 55mUnited Airlines
Tue 12/309:18 pmORD - SUX
Nonstop1h 57mUnited Airlines
Deal found 8/17$265
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Fri 9/56:48 pmSUX - LAX
1 stop5h 48mUnited Airlines
Tue 9/92:10 pmLAX - SUX
1 stop6h 47mUnited Airlines
Deal found 8/16$279
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Sat 10/46:51 pmSUX - DEN
Nonstop1h 49mUnited Airlines
Sat 10/113:40 pmDEN - SUX
Nonstop1h 34mUnited Airlines
Deal found 8/17$302
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/266:51 pmSUX - DFW
1 stop4h 40mUnited Airlines
Fri 10/34:18 pmDFW - SUX
1 stop6h 42mUnited Airlines
Deal found 8/18$304
This United Airlines deal was found by Cheapflights users on 8/18. 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 10/96:51 pmSUX - DEN
Nonstop1h 49mUnited Airlines
Sun 10/123:40 pmDEN - SUX
Nonstop1h 34mUnited Airlines
Deal found 8/18$312
This United Airlines deal was found by Cheapflights users on 8/15. 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.
Mon 10/276:46 pmSUX - PHX
1 stop4h 54mUnited Airlines
Sat 11/19:54 amPHX - SUX
1 stop6h 14mUnited Airlines
Deal found 8/15$324
This Trip.com deal was found by Cheapflights users on 8/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:49 amSUX - BOS
1 stop5h 51mUnited Airlines
Fri 9/264:25 pmBOS - SUX
1 stop7h 35mUnited Airlines
Deal found 8/17$325
This United Airlines deal was found by Cheapflights users on 8/16. 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 10/147:50 amSUX - ORD
Nonstop1h 51mUnited Airlines
Wed 10/159:08 pmORD - SUX
Nonstop1h 52mUnited Airlines
Deal found 8/16$326
This United Airlines deal was found by Cheapflights users on 8/15. 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.
Mon 10/276:46 pmSUX - PHX
1 stop4h 54mUnited Airlines
Wed 11/511:33 amPHX - SUX
2 stops10h 26mUnited Airlines
Deal found 8/15$334
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Sat 11/156:46 pmSUX - LAX
1 stop6h 06mUnited Airlines
Sat 1/312:12 pmLAX - SUX
1 stop6h 33mUnited Airlines
Deal found 8/16$334

Cheapflights Fare Finder

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

Fly from

Sioux City

Fly to

USA

Route

Depart

Return

Price

Sioux CityDenver

SUX - DEN

SUXDEN

Sioux City Sioux Gateway

Fri 9/19

6:48 pm-7:35 pm

Nonstop1h 47m

Denver Intl

Tue 9/23

3:40 pm-6:13 pm

Nonstop1h 33m

$254

Sioux CityDenver

SUX - DEN

SUXDEN

Sioux City Sioux Gateway

Thu 9/18

6:48 pm-7:35 pm

Nonstop1h 47m

Denver Intl

Sun 9/21

3:40 pm-6:13 pm

Nonstop1h 33m

$254

Sioux CityDenver

SUX - DEN

SUXDEN

Sioux City Sioux Gateway

Sat 10/4

6:51 pm-7:40 pm

Nonstop1h 49m

Denver Intl

Sat 10/11

3:40 pm-6:14 pm

Nonstop1h 34m

$254

Sioux CityDenver

SUX - DEN

SUXDEN

Sioux City Sioux Gateway

Tue 9/16

6:48 pm-7:35 pm

Nonstop1h 47m

Denver Intl

Tue 9/23

3:40 pm-6:13 pm

Nonstop1h 33m

$254

Sioux CityDenver

SUX - DEN

SUXDEN

Sioux City Sioux Gateway

Mon 9/15

6:48 pm-7:35 pm

Nonstop1h 47m

Denver Intl

Mon 9/22

3:40 pm-6:13 pm

Nonstop1h 33m

$254

Sioux CityDenver

SUX - DEN

SUXDEN

Sioux City Sioux Gateway

Fri 9/5

6:48 pm-7:35 pm

Nonstop1h 47m

Denver Intl

Thu 9/11

3:40 pm-6:13 pm

Nonstop1h 33m

$262

Sioux CityDenver

SUX - DEN

SUXDEN

Sioux City Sioux Gateway

Tue 9/9

6:48 pm-7:35 pm

Nonstop1h 47m

Denver Intl

Sun 9/14

3:40 pm-6:13 pm

Nonstop1h 33m

$262

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Fri 12/26

7:50 am-9:45 am

Nonstop1h 55m

Chicago O'Hare Intl

Tue 12/30

9:18 pm-11:15 pm

Nonstop1h 57m

$265

Sioux CityLos Angeles

SUX - LAX

SUXLAX

Sioux City Sioux Gateway

Fri 9/5

6:48 pm-10:36 pm

1 stop5h 48m

Los Angeles

Tue 9/9

2:10 pm-10:57 pm

1 stop6h 47m

$279

Sioux CityDenver

SUX - DEN

SUXDEN

Sioux City Sioux Gateway

Thu 9/11

6:48 pm-7:35 pm

Nonstop1h 47m

Denver Intl

Sun 9/14

3:40 pm-6:13 pm

Nonstop1h 33m

$302

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Showing 1-10 of 36 results
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Best time to book a flight from Sioux City to USA

Have a flexible travel schedule? Discover the best time to fly to USA 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 the United States

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

Currently, January is the cheapest month in which you can book a flight from Sioux City to USA (average of $246). Flying from Sioux City to USA in March is currently the most expensive (average of $326). 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 US?

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

When flying from Sioux City to USA, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing USA

Get insights into the airlines that provide service to USA. 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 USA. Reviews last updated August 18, 2025.
Read reviews from past customers who have flown United Airlines from Sioux City to the United States. 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
8,925 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

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
8,925 reviews
United Airlines
7.4
Good
8,925 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

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 USA. 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 United States?

    If you book a flight to United States 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.

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

    There are many flights that can get you from Sioux City to USA in 1h 47m. Fly via United Airlines to get the fastest option. The distance from Sioux City to USA is about 465 mi. Generally, flights for this route are nonstop.

  • What are the most popular routes from Sioux City to USA?

    The most popular flight routes from Sioux City to USA are Sioux City Sioux Gateway - Portland, Sioux City Sioux Gateway - Denver Intl and Sioux City Sioux Gateway - Boston Logan Intl.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Sioux City to USA (average of $246). Flying from Sioux City to USA in March is currently the most expensive (average of $326). 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 USA

Discover the top airline that operate flights from Sioux City to USA. 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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$194Average$432FlexibilityNo cancel feeOn-time69%

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