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Cheap flights from Idaho to Sioux City from $354

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Sioux City departing on 4/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Idaho to Sioux City

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:00 am - 10:46 am
BOI
-
SUX
4h 46m
1 stop
United Airlines Logo
6:00 am - 9:54 am
SUX
-
BOI
4h 54m
1 stop
$354United Airlines
Tue, Apr 14 - Sat, Apr 18
United Airlines Logo
5:00 am - 10:46 am
BOI
-
SUX
4h 46m
1 stop
United Airlines Logo
12:55 pm - 9:34 pm
SUX
-
BOI
9h 39m
2 stops
$446United Airlines
Tue, Apr 14 - Sat, Apr 18
United Airlines Logo
7:00 am - 5:54 pm
GEG
-
SUX
8h 54m
1 stop
United Airlines Logo
11:32 am - 3:12 pm
SUX
-
GEG
5h 40m
1 stop
$499United Airlines
Mon, Jun 8 - Sat, Jun 13
United Airlines Logo
7:00 am - 5:54 pm
GEG
-
SUX
8h 54m
1 stop
United Airlines Logo
11:32 am - 3:12 pm
SUX
-
GEG
5h 40m
1 stop
$584United Airlines
Mon, Jun 8 - Fri, Jun 12
United Airlines Logo
5:00 am - 5:54 pm
GEG
-
SUX
10h 54m
2 stops
United Airlines Logo
11:32 am - 3:12 pm
SUX
-
GEG
5h 40m
1 stop
$663United Airlines
Mon, Jun 8 - Sat, Jun 13
United Airlines Logo
7:03 pm - 10:46 am
BOI
-
SUX
14h 43m
2 stops
United Airlines Logo
12:55 pm - 9:34 pm
SUX
-
BOI
9h 39m
2 stops
$675United Airlines
Tue, Apr 14 - Sat, Apr 18
United Airlines Logo
4:10 pm - 10:41 am
GEG
-
SUX
16h 31m
1 stop
United Airlines Logo
6:42 pm - 12:39 pm
SUX
-
GEG
19h 57m
1 stop
$710United Airlines
Fri, May 1 - Fri, May 8
United Airlines Logo
4:01 pm - 10:46 am
GEG
-
SUX
16h 45m
1 stop
United Airlines Logo
12:55 pm - 9:11 pm
SUX
-
GEG
10h 16m
2 stops
$716United Airlines
Tue, Apr 14 - Sat, Apr 18
United Airlines Logo
12:35 pm - 10:46 am
GEG
-
SUX
20h 11m
2 stops
United Airlines Logo
12:55 pm - 9:11 pm
SUX
-
GEG
10h 16m
2 stops
$721United Airlines
Tue, Apr 14 - Sat, Apr 18
United Airlines Logo
5:46 pm - 10:57 am
BOI
-
SUX
16h 11m
1 stop
United Airlines Logo
11:32 am - 5:56 pm
SUX
-
BOI
7h 24m
1 stop
$722United Airlines
Sat, Jul 11 - Sat, Jul 18

United Airlines flights from Idaho to Sioux City

Our best United Airlines deals on Idaho to Sioux City flight tickets
United Airlines
Apr 14
BOI5:00 amBoise Air Term. Gowen Fld
4h 46m
1 stop
SUX10:46 amSioux City Sioux Gateway
Apr 18
SUX6:00 amSioux City Sioux Gateway
4h 54m
1 stop
BOI9:54 amBoise Air Term. Gowen Fld
$354
United Airlines
Apr 14
BOI5:00 amBoise Air Term. Gowen Fld
4h 46m
1 stop
SUX10:46 amSioux City Sioux Gateway
Apr 18
SUX12:55 pmSioux City Sioux Gateway
9h 39m
2 stops
BOI9:34 pmBoise Air Term. Gowen Fld
$446
United Airlines
Jun 8
GEG7:00 amSpokane
8h 54m
1 stop
SUX5:54 pmSioux City Sioux Gateway
Jun 13
SUX11:32 amSioux City Sioux Gateway
5h 40m
1 stop
GEG3:12 pmSpokane
$499

momondo 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, momondo users made 832,500 searches. Data last updated April 1, 2026.
Use the filters below to find and compare flights from Idaho to Sioux City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BoiseSioux City

BOI - SUX

BOISUX

Boise Air Term. Gowen Fld

Tue 4/14

5:00 am-10:46 am

1 stop4h 46m

Sioux City Sioux Gateway

Sat 4/18

6:00 am-9:54 am

1 stop4h 54m

$354

BoiseSioux City

BOI - SUX

BOISUX

Boise Air Term. Gowen Fld

Tue 4/14

5:00 am-10:46 am

1 stop4h 46m

Sioux City Sioux Gateway

Sat 4/18

12:55 pm-9:34 pm

2 stops9h 39m

$446

SpokaneSioux City

GEG - SUX

GEGSUX

Spokane

Mon 6/8

7:00 am-5:54 pm

1 stop8h 54m

Sioux City Sioux Gateway

Sat 6/13

11:32 am-3:12 pm

1 stop5h 40m

$499

SpokaneSioux City

GEG - SUX

GEGSUX

Spokane

Mon 6/8

7:00 am-5:54 pm

1 stop8h 54m

Sioux City Sioux Gateway

Fri 6/12

11:32 am-3:12 pm

1 stop5h 40m

$584

SpokaneSioux City

GEG - SUX

GEGSUX

Spokane

Mon 6/8

5:00 am-5:54 pm

2 stops10h 54m

Sioux City Sioux Gateway

Sat 6/13

11:32 am-3:12 pm

1 stop5h 40m

$663

BoiseSioux City

BOI - SUX

BOISUX

Boise Air Term. Gowen Fld

Tue 4/14

7:03 pm-10:46 am

2 stops14h 43m

Sioux City Sioux Gateway

Sat 4/18

12:55 pm-9:34 pm

2 stops9h 39m

$675

SpokaneSioux City

GEG - SUX

GEGSUX

Spokane

Fri 5/1

4:10 pm-10:41 am

1 stop16h 31m

Sioux City Sioux Gateway

Fri 5/8

6:42 pm-12:39 pm

1 stop19h 57m

$710

SpokaneSioux City

GEG - SUX

GEGSUX

Spokane

Tue 4/14

4:01 pm-10:46 am

1 stop16h 45m

Sioux City Sioux Gateway

Sat 4/18

12:55 pm-9:11 pm

2 stops10h 16m

$716

SpokaneSioux City

GEG - SUX

GEGSUX

Spokane

Tue 4/14

12:35 pm-10:46 am

2 stops20h 11m

Sioux City Sioux Gateway

Sat 4/18

12:55 pm-9:11 pm

2 stops10h 16m

$721

BoiseSioux City

BOI - SUX

BOISUX

Boise Air Term. Gowen Fld

Sat 7/11

5:46 pm-10:57 am

1 stop16h 11m

Sioux City Sioux Gateway

Sat 7/18

11:32 am-5:56 pm

1 stop7h 24m

$722

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to Sioux City from

How to get the cheapest flight ticket from Idaho to Sioux City

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Idaho to Sioux City Sioux Gateway?

United Airlines is the most popular carrier operating from Idaho to Sioux City Sioux Gateway

What airlines fly to Sioux City?

United Airlines, Delta and Southwest are the top three most popular airlines that fly to Sioux City from Idaho according to our data. United Airlines is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Sioux City. Keep in mind that there are 4 different airlines that fly to Sioux City on a routine basis, so you have a few additional options to choose from.

Cheap Idaho to Sioux City flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to Sioux City

Fastest flight time

4h 46m

Direct flights

None
The fastest flight from Idaho to Sioux City takes 4h 46m
There are no direct flights from Idaho to Sioux City. There are no popular flight routes from Idaho to Sioux City.
Search flight deals

Frequently asked questions about flying from Idaho to Sioux City

  • When did momondo last update prices for flights from Idaho to Sioux City Sioux Gateway Airport?

    Prices for flights from Idaho to Sioux City Sioux Gateway Airport refresh daily.

  • How many operators does momondo search for flights from Idaho to Sioux City Sioux Gateway Airport?

  • How old do you have to be to fly from Idaho to Sioux City Sioux Gateway Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Idaho to Sioux City Sioux Gateway Airport.

  • What documentation or ID do you need to fly to Sioux City Sioux Gateway Airport?

    The required travel and health documents for your Sioux City Sioux Gateway Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sioux City Sioux Gateway Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Idaho to Sioux City

Compare and see reviews for airlines that fly from Idaho to Sioux City with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $323Free CancellationRating
7.4
9,529 reviews
Search United Airlines flights

Traveling to a place near Sioux City?

Book flights to Sioux City if you plan to visit one of these locations
Norfolk

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to Sioux City?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Idaho to Sioux City. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Idaho to Sioux City with flexible booking policies on momondo?

Yes. All flights to Sioux City from Idaho on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Idaho to Sioux City?

momondo provides multiple filters to help you find the best flight to Sioux City from Idaho. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Idaho to Sioux City right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Idaho to Sioux City now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sioux City and let you know when they change.

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