What airlines fly to South Dakota?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to South Dakota from Idaho according to our data. United Airlines is the first choice among our users, with 72% of people opting to fly with this airline when traveling to South Dakota. Keep in mind that there are 3 different airlines that fly to South Dakota on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Idaho to South Dakota?

United Airlines, Delta, and Frontier are the most popular carriers operating from Idaho to South Dakota

When did momondo last update prices for flights from Idaho to South Dakota?

Prices for flights from Idaho to South Dakota refresh daily.

How many operators does momondo search for flights from Idaho to South Dakota?

There are 3 operators available for flights from Idaho to South Dakota as of September 2025.

How old do you have to be to fly from Idaho to South Dakota?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to South Dakota.

What documentation or ID do you need to fly to South Dakota?

The required travel and health documents for your South Dakota 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 South Dakota. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$161 Cheap Flights from Idaho to South Dakota in 2025/26

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Find the cheapest flights from Idaho to South Dakota

Round-trip

One-way

Last minute

Cheap round-trip flights

5:35 am - 2:09 pmBOI-RAP

8h 34m1 stop

4:25 pm - 12:10 amRAP-BOI

7h 45m1 stop

$249Delta

Find Deal

Wed, Dec 3 - Wed, Dec 10

3:00 pm - 10:58 pmBOI-FSD

6h 58m1 stop

8:10 am - 2:09 pmFSD-BOI

6h 59m1 stop

$251Delta

Find Deal

Sat, Jan 24 - Wed, Jan 28

1:14 pm - 11:59 pmGEG-FSD

8h 45m1 stop

8:05 am - 2:08 pmFSD-GEG

8h 03m1 stop

$251American Airlines

Find Deal

Sat, Nov 15 - Wed, Nov 19

5:00 am - 9:10 amBOI-RAP

4h 10m1 stop

5:30 am - 9:53 amRAP-BOI

4h 23m1 stop

$254United Airlines

Find Deal

Thu, Oct 9 - Tue, Oct 14

3:00 pm - 10:58 pmBOI-FSD

6h 58m1 stop

8:10 am - 2:09 pmFSD-BOI

6h 59m1 stop

$255Delta

Find Deal

Sat, Jan 24 - Mon, Jan 26

2:36 pm - 8:21 pmBOI-FSD

4h 45m1 stop

5:14 pm - 9:24 pmFSD-BOI

5h 10m1 stop

$270United Airlines

Find Deal

Sat, Oct 11 - Sat, Oct 18

1:12 pm - 10:42 pmGEG-FSD

7h 30m1 stop

1:03 pm - 8:55 pmFSD-GEG

9h 52m1 stop

$304American Airlines

Find Deal

Thu, Oct 30 - Sun, Nov 2

12:03 pm - 6:33 pmGEG-FSD

28h 30m1 stop

8:42 pm - 5:48 pmFSD-GEG

23h 06m1 stop

$307Multiple Airlines

Find Deal

Thu, Oct 23 - Sun, Oct 26

12:03 pm - 8:01 pmGEG-FSD

29h 58m2 stops

8:42 pm - 5:48 pmFSD-GEG

23h 06m1 stop

$362Multiple Airlines

Find Deal

Thu, Oct 23 - Sun, Oct 26

6:59 pm - 8:34 amGEG-RAP

12h 35m1 stop

3:06 pm - 10:21 amRAP-GEG

20h 15m1 stop

$689Allegiant Air

Find Deal

Wed, Nov 26 - Sat, Nov 29

Delta flights from Idaho to South Dakota

Our best Delta deals on Idaho to South Dakota flight tickets

Delta

Dec 3

BOI5:35 amBoise Air Term. Gowen Fld

8h 34m

1 stop

RAP2:09 pmRapid City

Dec 10

RAP4:25 pmRapid City

7h 45m

1 stop

BOI12:10 amBoise Air Term. Gowen Fld

$249

Find similar

Delta

Jan 24

BOI3:00 pmBoise Air Term. Gowen Fld

6h 58m

1 stop

FSD10:58 pmSioux Falls Joe Foss Field

Jan 28

FSD8:10 amSioux Falls Joe Foss Field

6h 59m

1 stop

BOI2:09 pmBoise Air Term. Gowen Fld

$251

Find similar

Delta

Nov 3

GEG5:45 amSpokane

5h 10m

1 stop

FSD12:55 pmSioux Falls Joe Foss Field

Nov 8

FSD1:35 pmSioux Falls Joe Foss Field

8h 11m

1 stop

GEG7:46 pmSpokane

$255

Find similar

United Airlines flights from Idaho to South Dakota

Our best United Airlines deals on Idaho to South Dakota flight tickets

United Airlines

Oct 9

BOI5:00 amBoise Air Term. Gowen Fld

4h 10m

1 stop

RAP9:10 amRapid City

Oct 14

RAP5:30 amRapid City

4h 23m

1 stop

BOI9:53 amBoise Air Term. Gowen Fld

$254

Find similar

United Airlines

Oct 11

BOI2:36 pmBoise Air Term. Gowen Fld

4h 45m

1 stop

FSD8:21 pmSioux Falls Joe Foss Field

Oct 18

FSD5:14 pmSioux Falls Joe Foss Field

5h 10m

1 stop

BOI9:24 pmBoise Air Term. Gowen Fld

$270

Find similar

United Airlines

Oct 11

BOI2:12 pmBoise Air Term. Gowen Fld

8h 03m

2 stops

FSD11:15 pmSioux Falls Joe Foss Field

Oct 18

FSD5:14 pmSioux Falls Joe Foss Field

5h 10m

1 stop

BOI9:24 pmBoise Air Term. Gowen Fld

$275

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Wed 12/3

5:35 am-2:09 pm

1 stop8h 34m

Rapid City

Wed 12/10

4:25 pm-12:10 am

1 stop7h 45m

$249

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Sat 1/24

3:00 pm-10:58 pm

1 stop6h 58m

Sioux Falls Joe Foss Field

Wed 1/28

8:10 am-2:09 pm

1 stop6h 59m

$251

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Sat 11/15

1:14 pm-11:59 pm

1 stop8h 45m

Sioux Falls Joe Foss Field

Wed 11/19

8:05 am-2:08 pm

1 stop8h 03m

$251

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Thu 10/9

5:00 am-9:10 am

1 stop4h 10m

Rapid City

Tue 10/14

5:30 am-9:53 am

1 stop4h 23m

$254

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Sat 1/24

3:00 pm-10:58 pm

1 stop6h 58m

Sioux Falls Joe Foss Field

Mon 1/26

8:10 am-2:09 pm

1 stop6h 59m

$255

BoiseSioux Falls

BOI - FSD

BOIFSD

Boise Air Term. Gowen Fld

Sat 10/11

2:36 pm-8:21 pm

1 stop4h 45m

Sioux Falls Joe Foss Field

Sat 10/18

5:14 pm-9:24 pm

1 stop5h 10m

$270

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Thu 10/30

1:12 pm-10:42 pm

1 stop7h 30m

Sioux Falls Joe Foss Field

Sun 11/2

1:03 pm-8:55 pm

1 stop9h 52m

$304

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Thu 10/23

12:03 pm-6:33 pm

1 stop28h 30m

Sioux Falls Joe Foss Field

Sun 10/26

8:42 pm-5:48 pm

1 stop23h 06m

$307

SpokaneSioux Falls

GEG - FSD

GEGFSD

Spokane

Thu 10/23

12:03 pm-8:01 pm

2 stops29h 58m

Sioux Falls Joe Foss Field

Sun 10/26

8:42 pm-5:48 pm

1 stop23h 06m

$362

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Wed 11/26

6:59 pm-8:34 am

1 stop12h 35m

Rapid City

Sat 11/29

3:06 pm-10:21 am

1 stop20h 15m

$689

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho to South Dakota

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

Prices

Airlines

What is the cheapest month to fly to South Dakota?

The month of June is, on average, the cheapest month to fly to South Dakota from Idaho, with most prices found around $309. If you aren’t able to travel to South Dakota during the month of June, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $368.

What is the cheapest day to depart on your flight to South Dakota?

The cheapest day to depart from Idaho to South Dakota is on a Saturday. Travelers who choose to depart for South Dakota on a Saturday will often find tickets for as low as $365. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $681. These prices are subject to change though, so be sure to set up a Price Alert for flights to South Dakota.

What is the cheapest time of day to depart on your flight to South Dakota?

The cheapest time of day to fly to South Dakota is in the afternoon when flights can be purchased for as low as $368. At noon is when there is more demand to fly to South Dakota, so prices are often more expensive at around $569 per ticket.

Can stopping save me money on Idaho to South Dakota flights?

You could potentially save up to 53% on your flight if you consider stops on a Idaho to South Dakota flight.

Cheap Idaho to South Dakota flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to South Dakota

Direct flights	None

There are no direct flights from Idaho to South Dakota. There are no popular flight routes from Idaho to South Dakota.

Search flight deals

When did momondo last update prices for flights from Idaho to South Dakota?
Prices for flights from Idaho to South Dakota refresh daily.
How many operators does momondo search for flights from Idaho to South Dakota?
There are 3 operators available for flights from Idaho to South Dakota as of September 2025.
How old do you have to be to fly from Idaho to South Dakota?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to South Dakota.
What documentation or ID do you need to fly to South Dakota?
The required travel and health documents for your South Dakota 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 South Dakota. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Idaho to South Dakota

Compare and see reviews for airlines that fly from Idaho to South Dakota with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $228	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Delta	PriceFrom $228	Free Cancellation	Rating 7.9 7,974 reviews	Search Delta flights
American Airlines	PriceFrom $250	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to South Dakota?

It is quick and easy to find Idaho to South Dakota flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to South Dakota that suits you.

Can I find flights from Idaho to South Dakota with flexible booking policies on momondo?

Flights from Idaho to South Dakota with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Idaho to South Dakota?

momondo provides multiple filters to help you find the best flight to South Dakota 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 South Dakota right now. Can momondo alert me if prices change?

If you are simply researching potential flights to South Dakota, momondo offers a useful price alert feature which will track prices for flights to South Dakota from Idaho and alert you when they change.