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Sioux City

$374+ Cheap flights from Idaho to Sioux City (SUX)

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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SUX
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
1 adult, Economy
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Cheap flight deals from Idaho to Sioux City

Cheapest flights from Idaho to Sioux City
Explore the most affordable flight options available from Idaho to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 5, 2026.

This United Airlines deal was found by Cheapflights users on 2/2. 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 2/185:00 am
BOI
-
SUX
1 stop4h 45m
United Airlines
Sat 2/216:00 am
SUX
-
BOI
1 stop5h 12m
United Airlines
Deal found 2/2$374
This United Airlines deal was found by Cheapflights users on 2/3. 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 2/245:24 pm
BOI
-
SUX
1 stop5h 18m
United Airlines
Sat 2/286:46 pm
SUX
-
BOI
1 stop5h 37m
United Airlines
Deal found 2/3$387
This United Airlines deal was found by Cheapflights users on 2/3. 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 2/104:10 pm
GEG
-
SUX
1 stop5h 37m
United Airlines
Sat 2/141:00 pm
SUX
-
GEG
1 stop7h 16m
United Airlines
Deal found 2/3$464

Find flight deals from Idaho to Sioux City

Keep the following information in mind while searching for Idaho to Sioux City flight deals. Data was last updated February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$374
(United Airlines)
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Sioux City Sioux Gateway flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Sioux City Sioux Gateway flights.
Search Deals
From Idaho to Sioux City Sioux Gateway
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho 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 February 5, 2026.
Use the filters below to find and compare flights from Idaho to Sioux City that are best for you.

Fly from

Idaho

Fly to

Sioux City

Route

Depart

Return

Price

BoiseSioux City

BOI - SUX

BOISUX

Boise Air Term. Gowen Fld

Wed 2/18

5:00 am-10:45 am

1 stop4h 45m

Sioux City Sioux Gateway

Sat 2/21

6:00 am-10:12 am

1 stop5h 12m

$374

BoiseSioux City

BOI - SUX

BOISUX

Boise Air Term. Gowen Fld

Tue 2/24

5:24 pm-11:42 pm

1 stop5h 18m

Sioux City Sioux Gateway

Sat 2/28

6:46 pm-11:23 pm

1 stop5h 37m

$387

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Best time to book a flight from Idaho to Sioux City

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

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

Currently, February is the cheapest month in which you can book a flight from Idaho to Sioux City (average of $132). Flying from Idaho to Sioux City in July is currently the most expensive (average of $340). 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.

Related info for your journey

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

    For a flight from Idaho 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.

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

    There are many flights that can get you from Idaho to Sioux City in 4h 45m. Fly via United Airlines to get the fastest option. Airlines will cover a distance of 1003 mi.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Idaho to Sioux City (average of $132). Flying from Idaho to Sioux City in July is currently the most expensive (average of $340). 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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