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Sioux City

$161+ Cheap flights from Illinois 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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SUX
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Illinois to Sioux City

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) 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 January 21, 2025.

Round-trip from

$214
(United Airlines)

One-way from

$161
(United)
From Illinois to Sioux City Sioux Gateway
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One-way flight from Illinois to Sioux City Sioux Gateway
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Find flight deals from Illinois to Sioux City

Cheapest flights from Illinois to Sioux City
Explore the most affordable flight options available from Illinois to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This United Airlines deal was found by Cheapflights users on 1/19. 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 4/188:40 pmORD - SUX
Nonstop1h 46mUnited Airlines
Mon 4/2110:03 amSUX - ORD
Nonstop1h 39mUnited Airlines
Deal found 1/19$214
This United deal was found by Cheapflights users on 1/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/231:40 pmORD - SUX
2 stops26h 43mMultiple Airlines
Thu 2/275:15 pmSUX - ORD
2 stops20h 00mMultiple Airlines
Deal found 1/21$1,037

Find flights from Illinois to Sioux City within your budget

Customize your flight search to find flights from Illinois 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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Fri 4/18

8:40 pm-10:26 pm

Nonstop1h 46m

Sioux City Sioux Gateway

Mon 4/21

10:03 am-11:42 am

Nonstop1h 39m

$214

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Fri 4/18

1:40 pm-2:40 pm

2 stops25h 00m

Sioux City Sioux Gateway

Mon 4/21

3:25 pm-9:25 am

2 stops18h 00m

$1,100

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Wed 3/19

8:40 pm-10:32 pm

Nonstop1h 52m

$161

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Best time to book a flight from Illinois to Sioux City

Have a flexible travel schedule? Discover the best time to fly to Sioux City from Illinois 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.

Travel insights for flights from Illinois to Sioux City

Get recent, data-driven insights about flights from Illinois to Sioux City including ideal travel times, pricing trends, and more.

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

Currently, October is the cheapest month in which you can book a flight from Illinois to Sioux City (average of $318). Flying from Illinois 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 IL to SUX?

Find hourly flight availability from Illinois 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 January 21, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Sioux City as you normally would.

Weekly flight availability from Illinois to Sioux City

Explore weekly flight availability from Illinois to Sioux City. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 21, 2025.

The most flights from USIL to SUX are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Sioux City by month

Plan your trip to Sioux City by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sioux City ranges from 0.7 - 4.2 inches per month. June is typically the wettest month, when rainfall can reach 4.2 in. January is typically the driest time to visit Sioux City when rainfall is around 0.7 in.

Temperature in Sioux City by month

Plan your trip to Sioux City by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sioux City, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 January 21, 2025.
United Airlines
7.4
Good
8,984 reviews

Boarding

7.7

Overall

7.4

Food

6.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 10

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!

United Airlines
7.4
Good
8,984 reviews
United Airlines
7.4
Good
8,984 reviews

Boarding

7.7

Overall

7.4

Food

6.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 10

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!

Related info for your journey

Find useful and relevant information for your journey from Illinois 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 Illinois?

    For a flight from Illinois to Sioux City, you will be flying into Sioux Gateway. Sioux City Sioux Gateway (SUX) is just 7.0 mi from the center of the city.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Illinois to Sioux City (average of $318). Flying from Illinois 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.

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Alternative routes for Illinois to Sioux City

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Top airline flying from Illinois to Sioux City

Discover the top airline that operate flights from Illinois 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$225Average$326FlexibilityNo cancel feeOn-time69%
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