How long is the flight from South Dakota to Idaho?

Flight times from South Dakota to Idaho vary, but if you’re flying out of Rapid City and flying into Boise (one of the most popular routes), then the duration is 4h 34m on average. Another popular route from South Dakota to Idaho is flying from Sioux Falls to Boise, which will take roughly 4h 35m. Keep in mind that layovers or delays could extend your travel time.

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

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

What airlines fly to Idaho?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Idaho from South Dakota according to our data. United Airlines is the first choice among our users, with 75% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 3 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from South Dakota to Idaho are updated daily.

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

The number of operators available for flights from South Dakota to Idaho is 3 as of May 2026.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from South Dakota to Idaho.

What documentation or ID do you need to fly to Idaho?

The travel and health documents you'll need for your trip to Idaho may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$106 Cheap Flights from South Dakota to Idaho in 2026

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Find the cheapest flights from South Dakota to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:33 pm - 11:06 pm

RAP

GEG

7h 33m

1 stop

7:00 am - 3:49 pm

GEG

RAP

7h 49m

1 stop

$309Delta

Wed, Jun 3 - Wed, Jun 10

4:15 pm - 11:06 pm

RAP

GEG

7h 51m

1 stop

7:00 am - 3:29 pm

GEG

RAP

7h 29m

1 stop

$319Delta

Sun, Jul 19 - Tue, Jul 28

6:48 am - 6:13 pm

RAP

GEG

12h 25m

2 stops

7:00 am - 3:29 pm

GEG

RAP

7h 29m

1 stop

$324Delta

Sun, Jul 19 - Tue, Jul 28

6:50 am - 1:11 pm

RAP

GEG

7h 21m

1 stop

2:16 pm - 10:24 pm

GEG

RAP

7h 08m

1 stop

$329Delta

Fri, May 22 - Mon, Jun 1

1:53 pm - 7:26 pm

FSD

GEG

7h 33m

1 stop

12:35 pm - 7:36 pm

GEG

FSD

5h 01m

1 stop

$354Delta

Wed, Jul 1 - Thu, Jul 9

5:34 pm - 11:22 pm

FSD

BOI

6h 48m

1 stop

3:10 pm - 12:18 am

BOI

FSD

8h 08m

1 stop

$357American Airlines

Wed, Jul 15 - Wed, Jul 22

6:00 am - 9:45 am

FSD

BOI

4h 45m

1 stop

5:00 am - 10:38 am

BOI

FSD

4h 38m

1 stop

$368United Airlines

Wed, Jun 3 - Wed, Jun 10

9:00 am - 1:34 pm

RAP

BOI

4h 34m

1 stop

2:40 pm - 7:13 pm

BOI

RAP

4h 33m

1 stop

$379United Airlines

Sun, May 24 - Sat, May 30

6:00 am - 11:18 am

FSD

BOI

6h 18m

1 stop

1:59 pm - 11:54 pm

BOI

FSD

8h 55m

1 stop

$385American Airlines

Sat, Jun 6 - Sat, Jun 20

9:39 pm - 11:08 am

FSD

GEG

15h 29m

1 stop

8:51 pm - 10:51 am

GEG

FSD

12h 00m

1 stop

$441Allegiant Air

Thu, Jul 30 - Sun, Aug 2

American Airlines flights from South Dakota to Idaho

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

American Airlines

Jul 15

FSD5:34 pmSioux Falls Joe Foss Field

6h 48m

1 stop

BOI11:22 pmBoise Air Term. Gowen Fld

Jul 22

BOI3:10 pmBoise Air Term. Gowen Fld

8h 08m

1 stop

FSD12:18 amSioux Falls Joe Foss Field

$357

American Airlines

Jun 6

FSD6:00 amSioux Falls Joe Foss Field

6h 18m

1 stop

BOI11:18 amBoise Air Term. Gowen Fld

Jun 20

BOI1:59 pmBoise Air Term. Gowen Fld

8h 55m

1 stop

FSD11:54 pmSioux Falls Joe Foss Field

$385

American Airlines

Jul 15

FSD5:34 pmSioux Falls Joe Foss Field

6h 48m

1 stop

BOI11:22 pmBoise Air Term. Gowen Fld

Jul 22

BOI1:57 pmBoise Air Term. Gowen Fld

8h 56m

1 stop

FSD11:53 pmSioux Falls Joe Foss Field

$390

United Airlines flights from South Dakota to Idaho

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

United Airlines

Jun 3

FSD6:00 amSioux Falls Joe Foss Field

4h 45m

1 stop

BOI9:45 amBoise Air Term. Gowen Fld

Jun 10

BOI5:00 amBoise Air Term. Gowen Fld

4h 38m

1 stop

FSD10:38 amSioux Falls Joe Foss Field

$368

United Airlines

May 24

RAP9:00 amRapid City

4h 34m

1 stop

BOI1:34 pmBoise Air Term. Gowen Fld

May 30

BOI2:40 pmBoise Air Term. Gowen Fld

4h 33m

1 stop

RAP7:13 pmRapid City

$379

United Airlines

Aug 20

FSD6:00 amSioux Falls Joe Foss Field

4h 35m

1 stop

BOI9:35 amBoise Air Term. Gowen Fld

Aug 23

BOI12:24 pmBoise Air Term. Gowen Fld

9h 28m

1 stop

FSD10:52 pmSioux Falls Joe Foss Field

$382

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Wed 6/3

4:33 pm-11:06 pm

1 stop7h 33m

Spokane

Wed 6/10

7:00 am-3:49 pm

1 stop7h 49m

$309

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Sun 7/19

4:15 pm-11:06 pm

1 stop7h 51m

Spokane

Tue 7/28

7:00 am-3:29 pm

1 stop7h 29m

$319

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Sun 7/19

6:48 am-6:13 pm

2 stops12h 25m

Spokane

Tue 7/28

7:00 am-3:29 pm

1 stop7h 29m

$324

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Fri 5/22

6:50 am-1:11 pm

1 stop7h 21m

Spokane

Mon 6/1

2:16 pm-10:24 pm

1 stop7h 08m

$329

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Wed 7/1

1:53 pm-7:26 pm

1 stop7h 33m

Spokane

Thu 7/9

12:35 pm-7:36 pm

1 stop5h 01m

$354

Sioux FallsBoise

FSD - BOI

FSDBOI

Sioux Falls Joe Foss Field

Wed 7/15

5:34 pm-11:22 pm

1 stop6h 48m

Boise Air Term. Gowen Fld

Wed 7/22

3:10 pm-12:18 am

1 stop8h 08m

$357

Sioux FallsBoise

FSD - BOI

FSDBOI

Sioux Falls Joe Foss Field

Wed 6/3

6:00 am-9:45 am

1 stop4h 45m

Boise Air Term. Gowen Fld

Wed 6/10

5:00 am-10:38 am

1 stop4h 38m

$368

Quickest round-trip

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Sun 5/24

9:00 am-1:34 pm

1 stop4h 34m

Boise Air Term. Gowen Fld

Sat 5/30

2:40 pm-7:13 pm

1 stop4h 33m

$379

Sioux FallsBoise

FSD - BOI

FSDBOI

Sioux Falls Joe Foss Field

Sat 6/6

6:00 am-11:18 am

1 stop6h 18m

Boise Air Term. Gowen Fld

Sat 6/20

1:59 pm-11:54 pm

1 stop8h 55m

$385

Sioux FallsSpokane

FSD - GEG

FSDGEG

Sioux Falls Joe Foss Field

Thu 7/30

9:39 pm-11:08 am

1 stop15h 29m

Spokane

Sun 8/2

8:51 pm-10:51 am

1 stop12h 00m

$441

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 South Dakota to Idaho

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

Other information

What is the cheapest month to fly to Idaho?

In general, October is the cheapest month to fly from South Dakota to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $248. If you don’t want to visit Idaho in October, then you should wait until August to fly from South Dakota, when ticket prices are also cheap, with an average price of $248.

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

You could potentially save up to 9% on your flight if you consider stops on a South Dakota to Idaho flight.

Cheap South Dakota to Idaho flight deals and tips

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

Fastest flight time	4h 34m
Direct flights	None

The fastest flight from South Dakota to Idaho takes 4h 34m

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

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Frequently asked questions about flying from South Dakota to Idaho

When did momondo last update prices for flights from South Dakota to Idaho?
Prices for flights from South Dakota to Idaho are updated daily.
How many operators does momondo search for flights from South Dakota to Idaho?
The number of operators available for flights from South Dakota to Idaho is 3 as of May 2026.
How old do you have to be to fly from South Dakota to Idaho?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from South Dakota to Idaho.
What documentation or ID do you need to fly to Idaho?
The travel and health documents you'll need for your trip to Idaho may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from South Dakota to Idaho

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $152	Free Cancellation	Rating 7.4 9,699 reviews	Search United Airlines flights
Delta	PriceFrom $226	Free Cancellation	Rating 7.9 8,451 reviews	Search Delta flights
American Airlines	PriceFrom $334	Free Cancellation	Rating 7.1 11,667 reviews	Search American Airlines flights

Why use momondo?

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

Finding the right flight to Idaho from South Dakota is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho quick and easy, saving you time and money.

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

All flight searches from South Dakota to Idaho on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for South Dakota to Idaho flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Idaho from South Dakota are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.